HIGH ENERGY PHYSICS DIVISION                    HEPD Seminars (Abstracts and presentations) - Russian version

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Seminars, 2012

• Abstract-153:
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  Upgrade of the L1 Muon Trigger for CMS.    ( LU-L1MuonUpgrade.pdf = 4,2 Mb)    -    L.N.Uvarov

• Abstract-152:
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  Experiment PANDA.   
  (S.L.Belostotski - belostot_4.pdf = 4,2 Mb    and    A.A.Izotov - Izotov260313.pdf = 1,6 Mb)

• Abstract-151:
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  Latest results from Large Hadron Collider (moriond conference updates) and PNPI participation in the modernization program of collider detectors.   
  (A.A.Vorobyov - LHCb_Moriond_2013.pdf = 1,8 Mb    and    V.T.Kim - kim_hepd_18march2013.pdf = 3,3 Mb)

• Abstract-150:
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  Gas-discharge micro-detectors of new generation. Basic principles of work, creation and perspectives of micro-detector production at PNPI.    ( kudin_5.03.2013.pdf = 4,7 Mb)    -    L.G.Kudin

• Abstract-149:
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  Polarizability of nucleon. Status of PNPI-IKP experiment at the electron accelerator S-DALINAC (Darmstadt, Germany).    ( Maev_report.pdf = 4,5 Mb)    -    E.M.Maev

• Abstract-148:
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  Possible experiment on the test of time-reversal invariance in pd scattering at COSY (Julich).    ( TRIC_seminarHEPD_29Jan2013.pdf = 0,4 Mb)    -    S.G.Barsov

• Abstract-147:
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  New results collaborations CBELSA / TAPS (Bonn) and the Crystal Ball at MAMI, TAPS^/ and A2 (Mainz).    ( Dokl5_18_12.pdf = 2,3 Mb)    -    V.V.Sumachev, A.B.Gridnev

• Abstract-146:
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  Investigation of delayed fission and shape coexistence in thallium, astatine, and gold nuclei (ISOLDE, CERN).    ( sem_Dec_12.pdf = 3,1 Mb)    -    A.E.Barzakh

• Abstract-145:
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  Neutrino projet LAGUNA. Status and possible participation of PNPI.   
  (A.A.Vorobyov   -   Laguna_seminar_27.11.2012.pdf = 1,1 Mb   и   S.V.Kocyanenko   -   kosianenko_27_11_12.pdf = 1,45 Mb)

• Abstract-144:
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  Recent update of the LHC data on search for Higgs boson.    ( kim_hepd_tpd_nov2012.pdf = 12,8 Mb)    -    V.T.Kim

• Abstract-143:
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  Short presentation by A.A.Vorobyov News from LHCb ( Bs(d)mumu_13_nov2012.pdf = 1,2 Mb)    -    A.A.Vorobyov

• Abstract-142:
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  Investigation of metal-carbon composites. ( tikhonov_13_nov2012.pdf = 0,9 Mb)    -    V.I.Tikhonov

• Abstract-141:
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  Search for sterile neutrino. PNPI project "Neutrino-4" and status of other projects. ( Serebrov-6.11.2012.pdf = 41,9 Mb )    -    A.P.Serebrov,
  and Discussion:
  "О соотношении вероятности исчезновения реакторных антинейтрино и вероятности появления электронных антинейтрино в пучке мюонных антинейтрино".    ( Discussion.pdf = 0,3 Mb)    -    A.P.Serebrov

• Abstract-140:
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  The main results of the LHCb experiment. ( 2012-10-30_talk.pdf = 5,2 Mb)    -    A.A.Dzuba

• Abstract-139:
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  Precision Measurement of the Rate of Muon Capture in Hydrogen and Determination of the Proton's Pseudoscalar Form Factor. ( Maev_Seminar.pdf = 3,5 Mb)    -    E.M.Maev

• Abstract-138:
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  The problem of termination of the fuel cycle in nuclear reactors. ( Proriv.pdf = 1,4 Mb)    -    M.S.Onegin

• Abstract-137:
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  Нарушение С, Р, Т симметрий при интерференции спинзависимых амплитуд рассеяния нейтронов. ( Lukashevich_02.10.2012.pdf = 0,9 Mb)    -    V.V.Lukashevich

• Abstract-136:
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  Solar luminosity. ( lepekhin_25.09.2012.pdf = 0,2 Mb)    -    F.G.Lepekhin

• Abstract-135:
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  Bose-Einstein and other two-particle correlations. ( BEC_other_2_particles_cor_16-09-2012.pdff = 1,0 Mb)    -    V.A. Schegelski

• Abstract-134:
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  Energy dependence of the mean energy required to form an ion pair in hydrogen. ( wresalts.pdf = 1,3 Mb)    -    G.A.Korolev

• Abstract-133:
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  Neutrino oscillation results from the T2K experiment. ( kudenko_pnpi_0512.pdf = 5,6 Mb)    -    Yu.G. Kudenko

• Abstract-132:
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  Highly Accurate 3D Modeling of the C-80 Isochronous Cyclotron Magnetic Structure. ( 3D 2012may seminar C-80 Artamonov.pdf = 7,2 Mb)    -    S.A. Artamonov

• Abstract-131:
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  Hadron production in lepton-nuclei interactions at high energies: effects of formation length, energy loss and rescatterings. ( IvanovAE.pdf = 1,2 Mb)    -    A.E.Ivanov

• Abstract-130:
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  Polarization of Lambda Hyperon in HERMES Experiment. ( belostot_DLL_PNPI.pdf = 1,6 Mb)    -    S.L.Belostotsky

• Abstract-129:
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  Synchrotron radiation source of fourth generation (MARS). ( Ryabov_mars.pdf = 6,8 Mb)    -    G.A.Ryabov

• Abstract-128:
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  Daya Bay and RENO experiments.    ( Dayabay_PNPI_seminar_12.04.2012r.pdf = 2,5 Mb)    -    A.A.Vorobyov, and
  Measurement of neutrino oscillation parameter theta_13.    ( kosiyanenko_12_04_12.pdf = 1,5 Mb)    -    S.V.Kosyanenko

• Abstract-127:
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  LENA Project and newtrino oscillations. ( novikov_10_04_12.pdf = 4,0 Mb)    and ( kosiyanenko_10_04_12.pdf = 0,1 Mb) -    Yu.N.Novikov, A.A.Vorobyov, S.V.Kosyanenko

• Abstract-126:
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  Study of modification of elastic pp-scattering amplitude in nuclear matter through polarization measurements in reaction (p,2p) with S-shell protons in nuclei ⁶Li, ¹²C, ²⁸Si, and ⁴⁰Ca at beam energy 1 GeV.(predefence of candidate thesis). ( pnpi-phd-2012-04-03-for-pdf-small.pdf = 25,0 Mb)    -    A.Yu.Kisselev

• Abstract-125:
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  Nuclear relativistic energetics (Physicotechnical basis and results of first experiments). ( Chilap-2012.pdf = 7,7 Mb)    -    V.V.Chilap

• Abstract-124:
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  Search for heavy vector bosons W' and W* in the experiment ATLAS. ( Seminar_pnpi_wprime_final.pdf = 1,9 Mb)    -    V.M.Solovyov

• Abstract-123:
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  The common origin of the relastivistic and quantum effects. ( Amalsky-seminar.pdf = 0,3 Mb)    -    G.M.Amalsky

• Abstract-122:
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  Modifications of the vector meson properties in nuclei. ( SeminarPNPI_March2012.pdf = 1,4 Mb)    -    A.A.Dzyuba

• Abstract-121:
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  Physics of $\eta$ mesons. Recent results of A2 collaboration and prospects. ( SemHEPD.13.02.12.pdf = 2,7 Mb)    -    V.S.Bekrenev

• Abstract-120:
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  Application of fast crystals in position-emission tomography (POT). ( TOF-PET_Kosyanenko.pdf = 1,1 Mb)    -    S.V. Kocyanenko

• Abstract-119:
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  Prospective neutrino experiments in Europe. ( Novikov-PNPI-12_01_12_(3).pdf = 3,3 Mb)    -    Yu.N. Novikov

  Seminars, 2011

• Abstract-118:
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  Investigation of the nuclear matter equation at high densities. ( 2011-12-20-Kryshen-neutron stars.pdf = 1,1 Mb)    -    E.L. Kryshen

• Abstract-117:
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  50TH ANNIVERSARY OF POMERON. AGE-RELATED CHANGES. ( pomeron_50years.pdf = 0,1 Mb)    -    M.Ryskin,
  The diffraction cone shrinkage speed up with the collision energy ( pomeron_50years.pdf = 0,1 Mb)    -    V.Schegelsky.

• Abstract-116:
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  Brief report "Last news about Higgs from ATLAS and CMS". ( higgs-15dec-2011.pdf = 3,7 Mb)    -    A.A. Vorobyov

• Abstract-115:
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  Experiment MuSun. ( Vasilyev.ppt = 42,0 Mb)    -    A.A.Vasilyev

• Abstract-114:
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  Investigation of nuclear fission induced by intermediate energy protons. (MISSING_PARAMETER_VALUE.pdf = 3,1 Mb)    -    L.A. Vaishnene, V.G. Vovchenko

• Abstract-113:
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  Investigation of inelastic $^{40}Ca(p,p')X$ reaction at 1 GeV. (Miklukho.pdf = 4,6 Mb)    - O.V.Miklukho

• Abstract-112:
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  Anomaly of hyperfine structure in thallium isotopes. (Barzakh.pdf = 0,6 Mb)    - A.E.Barzakh

• Abstract-111:
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  Superluminal neutrinos? Problems of the OPERA experiment and theory. (OPERA_seminar_PNPI_10_10_2011.pdf =2,3 Mb)    - A. Vorobyov, M.Ryskin

• Abstract-110:
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  Polarization of Lambda and Anti-Lambda Hyperons in Deep-Inelastic Scattering at COMPASS (CERN). (alexakhin.pdf = 3,0 Mb)    - V.Yu. Aleksakhin

• Abstract-109:
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  Status of the NUSTAR project.
  Experiments with beams of relativistic radioactive nuclei at FAIR. (Maev.pdf = 2,3 Mb)    - E.M. Maev

• Abstract-108:
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  Radio isotope facility RIC-80. First experimental results on the production of generator radio isotope ⁸²Sr and other medical radio nuclides at PNPI synchrocyclotron. (Panteleev.pdf = 5,2 Mb)    - V.N.Panteleev

• Abstract-107:
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  Use of the CF_4/CO_2 gas mixture to recover of the gas-discharge detectors. (gavrilov_27.09.2011.pdf = 7,0 Mb)    - G.E.Gavrilov

• Abstract-106:
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  EVIDENCE FOR NARROW N(1685) NUCLEON RESONANCE. (kuznetsov_abstract.pdf = 0,1 Mb)    - V.Kuznetsov

• Abstract-105:
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  On the possibility of measuring of proton and deuteron EDM's at storage rings. (Abstract_dzyuba.pdf = 0,1 Mb)    - A. Dzyuba

• Abstract-104:
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  Short review of HEP_i x conference. (ReportPresentAtDarmstadt-2010-06-06.pdf = 0,4 Mb)    - A.E.Shevel'

• Abstract-103:
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  Quasi-free photoproduction of η -mesons off the deuteron (CBELSA-TAPS collaboraciya). (talk-Gridnev.pdf = 1,3 Mb)    - A.B.Gridnev

• Abstract-102:
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  New experimental possibility to measure ratio of time-reversal non-invariant amplitude to weak-interaction amplitude for passing polarized neutrons through polarized target. (lukashevich.pdf = 0,4 Mb)    - V.V.Lukashevich

• Abstract-101:
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  Near-threshold production of Sigma-minus hyperon in pn interaction. (Shikov.pdf = 1,9 Mb)    - E.N.Shikov

• Abstract-100:
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  IKAR experiment at Darmstadt in 2011. Short report. (GSI_carbon-Khanzadeev.pdf = 0,4 Mb)    - A.V.Khanzadeev

• Abstract-99:
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  Observation of passing 1 GeV protons through a plane silicon monocrystal with the help of the hodoscope based on the plane-parallel position-sensitive detector. (3_PSD_2011-Kosjanenko.pdf = 1,6 Mb)    - S.V. Kocyanenko

• Abstract-98:
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  Small-x physics at the LHC. Abstract: A few selected topics, such as questions related to BFKL, saturation and multiple interactions will be discussed. (gachina-Bartels.pdf = 6,6 Mb)    - Joachim Bartels

• Abstract-97:
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  Systems for selection and read out of data in high energy physics experiments (materials of the thesis for a Doctor's degree). (Intro_26_04_2011-Golovtsov.pdf = 28,0 Mb)    - V.L.Golovtsov

• Abstract-96:
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  Neutrinoless resonance double capture. (novikov-190411.pdf = 0,4 Mb)    - Yu.N.Novikov

• Abstract-95:
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  Experiment EPECUR: status and plans. (epecur_pnpi11-1.pdf = 4,4 Mb)    - I.G.Alekhseev, D.N.Svirida

• Abstract-94:
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  A2 collaboration at Meinz: status, results, problems. (SeminarHEPD7-Bekrenev.pdf = 3,9 Mb)    - V.S.Bekrenev

• Abstract-93:
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  Study of spin transfer coefficient to $\Lambda^0$ hyperon in the HERMES experiment. (Presentation2.pdf = 0,5 Mb)    - D.O.Veretennikov

• Abstract-92:
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  Study of meson pair production in experiment of CBELSA/TAPS collaboration: first measurement of polarization parameter I^s. (Article-scale-SV_06.pdf = 1,5 Mb)    - V.V.Sumachev

• Abstract-91:
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  Muon catalysis of the dd fusion: main results and unsolved problems. (doklad22feb.pdf = 1,0 Mb)    - G.G.Semenchuk

• Abstract-90:
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  Rice frequency is tract characteristic of signal amplifier and its application for nuclear research electronics. (Kashcuk.pdf = 2,8 Mb)    - A.P.Kaschuk

• Abstract-89:
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  Sensitivity of cross sections of elastic nucleus-nucleus scattering to space structure of nuclei with halo. (sensitivity.pdf = 1,1 Mb)    - G.D.Alkhazov

• Abstract-88:
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  Study of delay fission and co-existence of forms in ISOLDE experiments (isotopes of Tl and Po). (seminar_Jan_11.pdf = 3,3 Mb)    - A.E.Barzakh

• Abstract-87:
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  Status of В₁-collaboration at ELSA accelerator (Bonn). (11_01_25_Novinsky.pdf = 2,4 Mb)    - D.V.Novinsky and D.E.Bayadilov

  Seminars, 2010

• Abstract-86:
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  Production of $\phi$ mesons in nucleus-nuclei interaction at energies $\sqrt{S}_{NN}=62.4$ and 200 GeV in PHENIX experiment. (21_12_2010.pdf = 2,0 Mb)    - D.O.Kotov

• Abstract-85:
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  Silicon Multiplier for Frontier Detector System. (SiPM_PNPI.pdf = 7,1 Mb)    - Herbert Orth

• Abstract-84:
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  Plural birth cтруй with small cross-section impulses in pp^- impacts at sqrt(S) =1.96 TeV. (MultLowEtJets_120710.pdf = 1,2 Mb)    - G.Z.Obrant

• Abstract-83:
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  Super fast scintillators based on barium fluoride for positron-emission tomography and other applications. (rodny.pdf = 1,4 Mb)    - P.A. Rodny

• Abstract-82:
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  Project PENTATRAP. (eliseev.pdf = 7,3 Mb)    - S.A.Eliseev

• Abstract-81:
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  First observation of fragmentation channel ¹⁶О -> ⁸Ве+⁸Ве. (lepekhin_pr0911.pdf = 0,2 Mb)    - F.G.Lepekhin

• Abstract-80:
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  Compressibility of nuclear matter and neutron stars. (2010-10-19-NS.pdf = 2,2 Mb)    - E.L.Kryshen'

• Abstract-79:
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  Experiment preparation for production of the isotope-generator ⁸²Sr at the PNPI synchrocyclotron. (82Sr1_experiment.pdf = 2,4 Mb)    - V.N.Panteleev

• Abstract-78:
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  Production of medical isotopes ⁸²Sr and ²⁰¹Te on new accelerator PNPI. (tikhonov_24_June_2012.pdf = 0,7 Mb)    - V.I.Tikhonov

• Abstract-77:
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  Experiment with polarized hydrogen and deuterium at low energies. (Engels.ppt = 17,3 Mb    and    Engels.pdf = 6,7 Mb)   )    - R. Engels

• Abstract-76:
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  Production of a beam of tensor-polarized deuterons using a carbon target. (Seyfarth.pdf = 1,2 Mb)    - H. Seyfarth

• Abstract-75:
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  Double polarized DD-fision experiment at PNPI. Status report. (kravtsov.pdf = 2,2 Mb)    - P. Kravtsov

• Abstract-74:
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  Study of $^{191-218}$Po isotopes at laser ion source at ISOLDE (CERN). Status of new laser complex IRIS. (fedorov.pdf = 2,9 Mb)    - fedorov

• Abstract-73:
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  Study of hyperon production in pp scattering near threshold. (A.Dzyuba_SeminarPNPI_June2010.pdf = 1,3 Mb)    - A.A.Dzyuba

• Abstract-72:
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  Production of radioactive nuclei and preliminary project of RIC (radioactive isotopes at cyclotron). (panteleev_25.05.10.pdf = 1,2 Mb)    - V.Panteleev

• Abstract-71:
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  Recent result from the Crystal Ball Experiment at MAMI-C. (SemThomas.pdf = 7,00 Mb)    - A. THOMAS

• Abstract-70:
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  Investigation of resonances at accelerator MAMI-C (Germany). (SemHEPD.pdf = 2,00 Mb)    - V.S.Bekrenev

• Abstract-69:
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  Systematization of nuclear gamma-transition energies. (systematization_of_energy.pdf = 2,3 Mb)    - I.A. Mitropolsky

• Abstract-68:
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  Resistive Plate Chamber (RPC) for time-of-flight measurements. (Vikhrov_seminar_16.03.10.pdf = 1,35 Mb)    - V.V. Vikhrov

• Abstract-67:
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  Search for heavy bosons Z' and Z* in the ATLAS experiment at LHC. (Sedykh_march_2010_final.pdf = 1,1 Mb)    - E.V.Sedykh

• Abstract-66:
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  The investigation of the rare-earth manganits and manganats by the mSR-method.    - Sergey I.Vorobyov

• Abstract-65:
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  Outlooks for supersymmetry discovery at the Large Hadron Collider.. (LHC2.pdf = 3,1 Mb)    - D.I. Kazakov

• Abstract-64:
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  Search for Extra Dimensions Using Weak Gauge Bosons. D0 Experiment. (ED_report_d0_pnpi_january_2010.pdf = 2,1 Mb)    - Yu.A. Scheglov

• Abstract-63:
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  Neuron nets. Examples of application and training. (NN_suvorov.pdf = 1 Mb)    - V.M.Suvorov, and    (MY_ANN-kosyanenko.pdf = 370 Kb)    - S.V.Kosyanenko

  Seminars, 2009

• Abstract-62:
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  Study of nuclear medium effect on the amplitudes of proton-proton scattering at the energy of 1 GeV (Project MAP2). (map-2-09-mik.pdf = 1,5 Mb)    - O.V.Miklukho

• Abstract-61:
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  Measurement of the cross section of the dd fusion of polarized deuterons at low (10-100 KeV) energies (Project of the experiment). (dd_fusion_2009_PK.pdf = 1 Mb)    - A.A.Vasiliev

• Abstract-60:
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  Research program of B1 collaboration at the S beam of the ELSA accelerator (Bonn, Germany)..
  presentation: B1-commissioning02.pdf = 1,7 Mb,    photo: b1meeting_oct2008_1000.jpg    and    Beam_S.doc    - V.V.Sumachev

• Abstract-59:
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  Influence of nucleon losses on the momentum distributions of the fission fragments in the case of fission of ²⁵²CF nuclei. (Seminar_01_12_09.pdf = 2,1 Mb)    - B.L.Gorshkov and G.E. Solyakin

• Abstract-58:
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  T-noninvariant amplitude of neutron scattering.
  presentation: seminar_10.11.09-Lukashevich.pdf = 500 Kb    and report: Russian.current.pdf    - V.V. Lukashevich

• Abstract-57:
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  Status and perspectives of experiments with the detector Crystal Ball.
  Abstract: Starostin.pdf    and presentation: PNPI_Nov09_v0.pdf = 4 Mb    - A.B.Starostin

• Abstract-56:
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  Experiments R3B and EXL at the accelerator FAIR:
  R3B+EXL_Alkhaz.pdf = 11 Mb    - G.D.Alkhazov
  Seliverstov_PNPI seminar October 2009.pdf = 1 Mb    - D.M.Seliverstov
  Zalite_PNPI seminar October 2009.pdf = 2 Mb    - Y.K.Zalite

• Abstract-55:
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  Multiple jet production at low transverse momenta. (MultLowEtJets_102009.pdf = 1 Mb)    - G.Z.Obrant

• Abstract-54:
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  Study of nuclear medium effects on polarization of Lambda hyperon at HERMES. (Short talk). (Adep_sem_brief.pdf = 320 Kb)    - S.L.Belostotsky

• Abstract-53:
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  Mechanisms of radioactive nucleus production from uranium targets. (seminar-06-10-09a.pdf) - A.E.Barzakh

• Abstract-52:
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  Measurements of muon sticking factors in muon catalyzed reactions of dd and dt fusion. (balin-talk-29-09-09.pdf = 1,6 Mb) - D.V.Balin

• Abstract-51:
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  Non-exponential two-body beta decay of stored hydrogen-like ions. (YLitvinov_20090924_PNPI_Colloquium.pdf = 4,2 Mb) - Yuri A. Litvinov

• Abstract-50:
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  Non-exponential two-body beta decay of stored hydrogen-like ions. (seminar_22.09.09-Manaenkov.pdf) - S.I.Manaenkov

• Abstract-49:
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  Joint PNPI-ITEP experiment "EPECURE". (Epecure.pdf = 2Mb) - V.Sumachev

• Abstract-48:
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  Study of $^12$Be, $^14$Be and $^8$B in S247 (IKAR) experiment. (seminar_inglessi.pdf = 3Mb) - A.Inglessi

• Abstract-47:
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  A detailed investigation of the reaction np-->pp pi^{-} has been carried out using the data obtained with the continuous neutron beam produced by charge exchange scattering of protons off a deuterium target. A partial wave event-by-event based maximum likelihood analysis was applied to determine contributions of different partial waves to the pion production process. The combined analysis of the np--> pp pi^{-} and pp--> pp pi^{o} data measured in the same energy region allows us to determine the contribution of isoscalar partial waves ( I=0) in the momentum range from 1.1 up to 1.8 GeV/c. The decay of isoscalar partial waves into ^1S_0(pp) \pi channel provides a good tool for a determination of the S-wave scalar pp-scattering length in the final state which was found to be a_{pp}=-7.5+-0.3 fm.
  ( See: Sarantsev.pdf ) - V.Sarantsev.
  E-mail: saran@pnpi.spb.ru

• Abstract-46:
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  Radiative corrections in the Standard Model and its sensitivity to new physics. (fig.pdf and SPb.pdf =1Mb) - V.Novikov

• Abstract-45:
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  Status of the joint PNPI-TUD experiment in Darmstadt on the nucleon polarizabilities. (Polarizability.pdf = 5Mb) - G.Alkhazov

• Abstract-44:
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  Recent results from D0. (talk.pdf = 15Mb) - A.Lobodenko

• Abstract-43:
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  Front End Readout for D0 Forward-angle Muon Tracking Detector. (LU-2009-04-21_web.pdf =2.5Mb) - L.Uvarov

• Abstract-42:
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  The proton form-factor problem and the OLYMPUS experiment. (talkPNPI_09[1].pdf =1.5Mb) - S.Belostotsky

• Abstract-41:
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  A brief review of the conference CHEP-2009: Computing in High Energy and Nuclear Physics. (PLAN-Draft-2009-04-27.pdf =2.5Mb) and MPG (1.9GB) - A.Shevel'

• Abstract-40:
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  Experiment UA9 : beam collimation with crystals at SPS CERN. (seminar_14.04.09-Ivanov.pdf )

• Abstract-39:
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  Identification of electrons at ATLAS experiment. (ATLAS_electron_id_PNPI.pdf )

• Abstract-38:
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  Рождение одиночного t - кварка в адронном канале на LHC. (seminar_10.03.09-Grebenyuk )

• Abstract-37:
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  Analysis of pp-scattering data in the energy range from 100 to 1300 MeV. (Faz0903-Fedorov )

• Abstract-36:
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  Construction of thermal neutron detectors at PNPI. (seminar_10.02.2009-Krivshich )

• Abstract-35:
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  Systematization of Gamov-Teller states near Z,N = 50. (seminar_03.02.2009 - L.Batist )

• Abstract-34:
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  Experiment D0. Recent results. (Dzero_08 - 20.01.2009 - G.Alkhazov )

• Abstract-33:
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  Perspective of short-lived neutron-rich nuclei production and studies at the PIK reactor. (seminar_13.01.09 - V.Panteleev )

  Seminars, 2008

• Abstract-32:
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  Investigation of baryon resonances using neutral decay channels. (subject of the doctor thesis). (starostin_abstract.pdf )
  

• Abstract-31:
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  The future Electron-Ion Collider (EIC) is a proposed new facility to collide high-energy electrons with nuclei and polarized protons. The main goals of the EIC is to explore the strong gluon fields in nuclei and to precisely image the sea-quarks and gluons in the nucleon. The speaker will present an overview of the discussed physics program of the EIC and key measurements.
  

  Seminars, 2006

• Abstract-30:
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  Crystal Barrel at ELSA. The new TRANSREGIO-Project. (Abstract_PNPI_06.pdf )

• Abstract-29:
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  Мeasurement of spallation reactions and study of reaction ²⁸Si(p,p/X)²⁴Mg by 1Gev protons on the spectrometer MAGe (ITEP). (abstract.pdf)
  

  Seminars, 2005

• Abstract-28:
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  Because of its unique properties, the η meson can be used to study C, CP and CPT invariance, to test the chiral theory of perturbation and other theories of strong interaction, to search for leptoquarks, to check the conservation of lepton number etc.
  In this talk, an overview is given of results obtained while studying decays of η mesons produced in the experiment at the AGS pion beam using the Crystal Ball detector. On the base of 3 x 10⁷ η decays, there are measured with a high precision the slope parameter of Dalitz plots for the decay η ® 3p⁰ and the branching ratio of the decay η ® p⁰gg. For the first time, upper limits are given for the decays forbidden by the C invariance: η®3g, η ® 2p⁰g, η ® 3p⁰g. The sensitivity of obtained results relatively to the C-invariance violation is estimated. Also for the first time, the upper limit on the CP-forbidden decay η ® 4p⁰ is established and the sensitivity of obtained value relatively to the CP-violation is estimated.
  The study of η decays with the Crystal Ball detector goes on at the tagged photon beam of the microtron MAMI-C in Mainz. A short review of this new experimental program will be given.
  E-mail: starost@pnpi.spb.ru
  

• Abstract-27:
  ----------------
  The theoretical predictions for the non strange baryon resonance spectrum have the visible differences. This disagreement invites further experimental investi-gation of the pion-nucleon elastic interactions.
  Recent experiments of the PNPI-ITEP collaborations resolved a part of the twofold ambiguities of the PWA. The PNPI-ITEP results were used in the new partial-wave analysis (PWA) FA02 of the George Washington University groups (2004 year).
  The proposal for the additional spin-rotation parameters R and A measurements in the resonance region below 2.0 GeV is motivated. Such additional experiments are necessary to resolve possible remaining twofold ambiguities of the PWAs.
  E-mail: sumachev@pnpi.spb.ru
  

• Abstract-26:
  ----------------
  A new precision measurement of parity violation electron scattering from the proton at very low $Q^2$ and forward angles is being prepared for execution at Jefferson Laboratory. The experiment is direct challenge to the predictions of the Standard Model of quarks and leptons and is a search for new physics. There exists an unique opportunity to carry out thr first precision measurement of the weak charge of the proton, $Q_W^p=1-4\sin ^2(\theta _W)$, by building on technical advances that have been made at Jefferson Laboratory's world-leading parity violating electron scattering program and by using the results of earlier experiments to constrain hadronic corrections. A 2200 hour measurement of the parity violating asymmetry in elastic electron-proton scattering at $Q^2=0.03$ (GeV/c)$^2$ employing 180 of 85 polarized beam on a 0.35 m long liquid hydrogen target will determine the ptoton weak charge with 4 combined statistical and systemtic errors. The Standard Model makes a firm prediction of $Q_W^p$, based on the "running" of the weak mixing angle $\sin ^2(\theta _W)$ from the $Z^0$ pole down to lower energies, corresponding to a 9 $\sigma$ effect at the envisaged experiment. Any significant deviation of $\sin ^2(\theta _W)$ from the Standard Model prediction at low $Q^2$ would be a signnal of new physics, where as agreement would place new and strict constraints on possible Standard Model extensions. In the absence of new physics the envisaged experiment will provide a 0.03 (GeV/c)$^2$ determination of $\sin ^2(\theta _W)$, making this a very competitive standalone measurement of the weak mixing angle indeed.
  

• Abstract-25:
  ----------------
  Light Nucleus Clustering in Fragmentation Above 1 A GeV.
  More...>> ( zarub.ps )
  

• Abstract-24:
  ----------------
  Modern data acquisition systems for the coordinate detectors.   New designs of the   Radio-Electronics Department.
  More...>> ( 2005-05_1.pdf )
  E-mail: vicgol@pnpi.spb.ru
  

• Abstract-23:
  ----------------
  Narrow highly excited states with halfwidth of $\Gamma \approx 0.4$ MeV have been recently detected [1] in nuclei formed in pickup reactions $A_1(d,^3He)A_2^*$. They were observed in kinetic energy spectra of $^3$He ejectiles. The measurements were performed with targets of $^{116,120,124}$Sn isotopes in recoil-free kinematics. The last requires for the two-body reaction $m_1+A_1 -->m_2+A_2^* $ the proper projectile momentum \begin{eqnarray} p_1=\sqrt{[\Delta^2 -(m_1+m_2)^2] [\Delta^2 -(m_1-m_2)^2]}c/(2 \Delta) \end{eqnarray} where $\Delta=A_1-A_2$ is a mass difference between nuclei $A_1$ and $A_2$.
  More...>>
  E-mail: gsol@pnpi.spb.ru
  

• Abstract-22:
  ----------------
  David Gross, David Politzer and Frank Wilczek have made a great impact on the theory concerning the strong force, Quantum Chromodynamics (QCD). Asymptotic freedom of QCD, non-Abelian gauge theory of quarks and gluons, helped to resolve many paradoxes of quantum field theory, and it has a long and dramatic history.
  E-mail: Victor.Kim@cern.ch
  

• Abstract-21:
  ----------------
  A review of the analyses and experiments pertaining to baryon spectroscopy and structure will be presented. A need to update the energy-independent partial wave analyses for pion-nucleon scattering data will be discussed. Determinations of the masses, widths and decay modes of low-lying excited states of the nucleon, as compiled in the Review of Particle Physics, are determined from the Karlsruhe-Helsinki, Carnegie-Mellon-Berkeley and Kent State analyses. The data included in these analyses were published before 1980. The possibility of a new experimental program in baryon spectroscopy using the MIPP facility at Fermilab will be discussed.
  проф. М.Е.Садлер
  
  

  Seminars, 2004

• Abstract-20:
  ----------------
  The reporter observes main tendencies in HEP Grid computing with examples from PHENIX Grid and relevant information from the conference CHEP 2004. PNPI role in HEP Grid is also discussed.
  E-mail: Andrey.Shevel@pnpi.spb.ru
  

• Abstract-19:
  ----------------
  The nuclear fission, in which a nucleus is deformed, and its fragments are emitted in the direction of internal nucleons flow, resulted from outer force, have been proposed to call by the specific name dynamical fission. Such nucleons flow may be appearing in the nuclear reaction of a relativistic proton quasi-elastic scattering on a small angle. The experimental data, that was obtained in PNPI RAS at 1-GeV proton energy with use of the double-arm time-of-flight spectrometer, evidence for the considerable contribution of the dynamical fission events of nuclei ²³⁸U, ²³²Th and ¹⁹⁷Au to their total fission cross sections.
  E-mail: chestnov@pnpi.spb.ru
  

• Abstract-18:
  ----------------
  Proposal to constructing multi-arm time-of-flight spectrometer for investigation of collective movements of nuclear matter
  ( See: proposal_ru.pdf ).
  E-mail: boris@pnpi.spb.ru
  

• Abstract-17:
  ----------------
  Project of experiment for searching non-strange resonance from antidecuplet in the reactions p⁺p - p⁺p and p⁺p - KL at the ITEP accelerator. (New PNPI-ITEP collaboration). ( See: project.pdf ).
  E-mail: sumachev@pnpi.spb.ru
  

• Abstract-16:
  ----------------
  A resonant contribution of l=2 amplitude into the cross section of exclusive 4 pions production in γγ collisions. ( See: repino_04.ps ).
  E-mail: Valery.Schegelsky@cern.ch
  

• Abstract-15:
  ----------------
  Properties of the hafnium-178 isomer. "Hafnium bomb". Gamma-laser using isomers. Acceleration and breeding of neutrons in environment with isomers.
  

• Abstract-14:
  ----------------
  Two kinds of nuclear tripartitions have been observed in disintegrations induced in heavy nuclei by relativistic projectiles. With relatively small probability to binary decays coplanar three-prong events were observed,compara-ble masses being inherent to all three fragments. With larger probability disintegrations were registered where two almost collinear massive fragments were accompanied by large nucleon losses with their total mass comparable to fragment mass. Both processes were interpreted as consequences of a disintegration of a collinear three-bo-dy nuclear configuration arising in recol-free kinematics through the formation of hadronic resonances including me-soatoms of heavy nuclei.
  E-mail: gsol@pnpi.spb.ru

• Abstract-13:
  ----------------
  The cross sections for small-angle proton elastic scattering on the ^6,8,9,11Li nuclei at the energies near 700 MeV/u were measured in inverse kinematics using secondary beams at GSI, Darmstadt. The hydrogen-filled ionization chamber IKAR was utilized as a target and a recoil proton detector. To determine the nuclear matter radii and radial matter distributions, the measured cross sections have been analysed with the aid of Glauber multiple-scattering theory. The nuclear matter distribution deduced for ¹¹Li exhibits a very pronounced halo structure. The obtained data allow for a test of theoretical model calculations on the structure of the studied neutron-rich nuclei.
  E-mail: dobrov@pnpi.spb.ru

• Abstract-12:
  ----------------
  Differential cross sections of reaction p ^-p®p⁰n are measured for forward scattering angles. The experiment is carried out at the pion channel of the PNPI synchrocyclotron in Gatchina in the incident pions momentum range from 417 to 710 MeV/c. Measurements were made using PNPI p⁰-spectrometer by detecting both photons from the decay p⁰ ® 2 γ.
  E-mail: dair@pnpi.spb.ru

• Abstract-11:
  ----------------
  Overview of current status of Relativistic Heavy Ion Collider (RHIC) and experimental setup of the PHENIX experiment is given. Plans of the PHENIX experiment upgrade up to year 2008 are presented. Physical program of the experiment and possibilities of its implementation are discussed. Performance of the PHENIX experiment during the RUN-4 is overviewed. Some physical results obtained in PHENIX experiment during the last year are presented: 1) measurement of transverse momentum spectra for charged hadrons and neutral p⁰ – mesons in dAu and AuAu at sqrt(s) = 200 ГэВ; 2) jet production in pp, dAu and AuAu interactions; 3) measurement of direct photons from the region of nuclear interaction as a function of transverse momentum and centrality in AuAu interactions; 4) production of J/Ψ in pp, dAu and AuAu interaction; 5) production of vector mesons (ω, φ) decaying in e⁺e^- channel. Basic directions of participation of PNPI in the PHENIX experiment are outlined. First results on measurement of light vector mesons decaying in hadron channels containing p⁰ – мезоны in final state are shown. Possibility to measure such decays in pp and dAu interactions is demonstrated. Further steps needed for continuation of this analysis are discussed.
  ( See: Present1.zip or Present1.pdf ).
  E-mail: riabovvg@pnpi.spb.ru

• Abstract-10:
  ----------------
  Internal polarized gas target with atomic hydrogen and deuterium are widely used now in the accelerator storage rings. These targets have the density up to 10 ¹⁴ at / cm and some advantages (no radiation damages, single type of nuclear) in comparison with the polarized solid targets. Low density is compensated by the multiple beam interaction with the target. These targets are based on the polarized atomic beam sources, which produce the parallel beam of the nuclear polarized atoms (hydrogen or deuterium) with the thermal energies. Atomic beam reaches the interaction area and crosses the accelerated beam. A t-shaped tube (storage cell) is used for the density increasing. Since the source of polarized atoms provides almost completely polarized beam, the target polarization and density is restricted mainly by the depolarization in the cell. There are some experimental results confirming the existence of the nuclear polarization in the hydrogen or deuterium molecules produced by recombination of the polarized atoms. The first experimental result has been obtained as a by-product during the measurements with the polarized atomic targets at the accelerators. Systematic studies of the molecular polarization at the accelerators are limited by the high cost of the accelerator time. A presented laboratory setup gives a possibility of the systematic measurements of nuclear polarization in hydrogen and deuterium molecules at different conditions. Polarized atomic beam emerges from atomic beam source (FZ-Juelich, COSY collaboration) recombines into molecules in the storage cell. An electron beam passing through the cell produces the ions H⁺₂ and H⁺. In the special ion analyzer and Lamb-shift polarimeter (Koln University) the nuclear polarization could be analyzed separately for atoms and molecules. This enables the investigation of atomic recombination and molecular depolarization processes at different conditions. The final goal of these studies is a significant increase of the polarized target density.
  E-mail: vassilie@pnpi.spb.ru

• Abstract-9:
  ----------------
  The production of eta - meson on nuclei is still a very active field of research lying in intersection of hadron and nuclear physics. A brief summary of the present status of this problem is presented. Nowadays due to new precise experimental data obtained mainly by TAPS&MAMI collaboration on this problem attracts theoretical efforts in many laboratories. Nevertheless the results obtained by different groups are in contradiction. So even the real part of scattering length of eta-mesons varies from 0.27 to 0.95 fm. A possible consequence of this attractive interaction is the formation of a bound-eta state for nuclei with a mass number larger than A>11. Now there are no reliable evidences about the existences of eta-mesic nuclei. The experimental confirmation of this bound system is of great interest in nuclear and particle physics for using nuclei as laboratories for studying the eta - mesons and the eta-N interaction in the nuclear field. Medium modification is one of the most discussed problems of modern physics. To find clear evidence for real influence of the nuclear potential on the physical processes is a main interest of many physical programs. The eta - meson production on nuclei provides a unique opportunity to study the interaction of the short-lived eta - meson with nucleons in a nuclear potential. As was mentioned in many reports the new precise data especially from full kinematics experiments are strongly needed for further progress in this field. The new experimental set on base of two famous sophisticated detectors -- Crystal Ball and TAPS -- is under installation on the tagged gamma- beam of MAMI accelerator. The combination of new experimental set and high energy resolution of primary beam produces the new opportunity in experimental study of meson - nuclei interaction. The new experiments with the aim to study low-energy interaction of eta-mesons with nuclei and search for eta-mesic nuclei are proposed. We propose to study a strong final state interaction of a slow eta-mesons produced by gamma beam on nuclei and search for eta-nuclei bound state in full kinematics experiments. Nowadays such experimental date do not exist. The details of experiments are presented.
  E-mail: bekrenev@pnpi.spb.ru

• Abstract-8:
  ----------------
  ...........
  E-mail:zhalov@pnpi.spb.ru

• Abstract-7:
  ----------------
  Any measured before now angular correlation spectrum of coincident fission fragments of heavy nuclei at the incident proton energy 140 MeV ≤ E_p ≤ 1000 MeV is found to be approximated by a sum of two normal distributions. Their mean angles and standard deviations differ from each other 2-3 times as match and depend from the proton energy and the target nucleus mass rather smooth. The partial distributions may be associated with two fission channels. The cross section of the ordinary fission channel for actinides decreases, when the energy of incident protons increasing from ?? 50 MeV to 1000 MeV. The additional fission channel is open in the interval from 100 to 140 MeV, and this cross section increases to some hundred mb for actinides nuclei, when projectile energy increasing to 1 GeV. The additional channel dominates in the fission of ¹⁸⁴W nuclei by 1 GeV protons (? 83% of the total fission cross section). The high priority of the additional fission channel may be connected with a more effective mechanism of the partial transformation of the incident-proton-kinetic-energy into residual-nucleus-deformation-energy, corresponding to the fission barrier saddle point, than in the ordinary fission channel. The residual nucleus deformation arises from directional nucleon flows in the course of reactions of production-and-absorption of p-mesons and quasi-elastic scattering of incident protons on small angles at the fast stage of interaction.
  E-mail:chestnov@pnpi.spb.ru

• Abstract-6:
  ----------------
  The appearance of the fermion condensation, which can be compared to the Bose-Einstein condensation, in different liquids is considered, its properties are discussed, and a large number of experimental evidences in favor of the existence of the fermion condensate is presented. A theory of high temperature superconductivity based on the combination of the fermion-condensation quantum phase transition and the conventional theory of superconductivity is presented.
  E-mail:vrshag@thd.pnpi.spb.ru

• Abstract-5:
  ----------------
  Resonant Ramsey’s method for measurement Р-, Т-violating amplitudes of interaction of the polarized neutrons with the polarized nucleus in area р-a wave resonance is discussed.
  Necessary expressions for the specified analysis are obtained on the basis of a formalism of a spin density matrix of neutrons.
  It is shown that a neutron phase spectrum contains information about the efficient fields in the target. Analysis for a selection of T – odd amplitude is applied for proposed experimental scheme.
  E-mail: lukasche@pnpi.spb.ru,   aldu@pnpi.spb.ru

• Abstract-4:
  ----------------
  Contemporary spectroscopic methods require the presentation of nuclear reaction products in the form of high quality low energy beam. To produce such ions we need to thermalize a product in a media and then extract it in an ionized form. The application of solid catchers (ISOLDE, IRIS …) puts the limits which come from the necessity of diffusion in solid and consiquentive ionization.
  Nuclear reaction products stopped in a gas media does not need to be diffused out and ionized (IGISOL). During the slow-down process, the charge of an ion is decreased to 1e. The stopped ions are evacuates in vacuum with gas flow and electric field.
  With the sample of Ion Guide ion sources the processes linked with transport of ions in dense (0.1-1bar) gas media in the presence of ionizing radiation and electric field to be discussed. The way to shape the electric field by electric cloud is considered. The calculations results are compared with the data obtained with IGISOL (JYFL) installation.
  ( See Seminar_PNPI_Jan_2004.pdf or Seminar_PNPI_Jan_2004.ppt )
  For more details see:

  • J. Huikari, P. Dendooven, A. Jokinen, A. Nieminen, H. Penttila, K. Perajarvi, A. Popov, S. Rinta-Antila, J. Aysto. "Production rates of radioactive ions at IGISOL" Submitted to Nucl.Instr.and Meth. Phys Res. B
  • JYFL Annual Report 2002, p9.
  • V.A.Bolshakov, A.G.Dernyatin, K.A.Mezilev, Yu.N.Novikov, A.G.Polyakov, A.V.Popov, Yu.Ya.Sergeev, V.I.Tikhonov. The Production of Neutron-Rich Heavy Nuclei of Astrophysical Interest at the IRIS Facility Nucl. Instrum. Methods Phys. Res. B70, 69 (1992).
  E-mail: apopov@pnpi.spb.ru

• Abstract-3:
  ----------------
  The efforts directed to the search for new states in dimuon channel in ppbar collisions at 2 TeV collider will discuss. The idea to use the different signal and background polarization to increase sensitivity in the dimuon invariant mass spectra have proposed. The mass spectra in the region of invariant mass from 3 to 15 GeV and R.M.S. functions for the muon cos(theta) distributions in the dimuon rest frame are presented. Some possible indications to the existence of new states in the mass region of Psi and Upsilons mesons have been demonstrated. The possibility of search for B - mesons rare decays in the dimuon channel will be consider. ( See Search1.ppt )
  E-mail: scheglov@pnpi.spb.ru

• Abstract-2:
  ----------------
  The detailed investigation of the reaction pp-->pp p⁰ ( proton + proton --> proton + proton + pion ) has been carried out at two incident proton momenta. Momentum, angular and effective mass distributions were analyzed in the framework of the one-pion exchange model. Taking into account only the P33 wave in the pole diagrams allows one to obtain the rather good agreement with experimental data on differential distributions. At the same time the predictions for total cross sections are much lower than the experimental data.
  E-mail: Saran@pnpi.spb.ru

• Abstract-1:
  ----------------
  The laser ion source has been used for the study of the isotope shifts of neutron deficient Eu isotopes. The extension of the region of the applicability of the method by using the g - b - radiation detection is reported. We have measured the isotope shifts of the europium optical line 576.520 nm for ^137-144 Eu. To increase the laser ion source efficiency an axial magnetic field was applied. Due to the axial magnetic field application the produced ions were extracted more efficiently from the ion source cavity. Nearly twofold rise of europium atom ionization efficiency was observed. By using of the effect of optical ion bunching the increase of selectivity was obtained. The isotope shift data for ^139-144Eu are in keeping with the previously measured isotope shifts for these nuclides. The new data for ¹³⁷ Eu and refined data for ¹³⁸Eu point to the gradual increase of deformation for these isotopes. Comparison with the microscopic-macroscopic calculations and calculations in the framework of Hartree-Fock model have been made.
  E-mail: dfedorov@pnpi.spb.ru





Seminars, 2003

• Abstract-Nesterov:
  ------------------------
  Study of rho-meson pair production in two-photon collisions with detector L3.    ( seminar1.pdf = 0,7 Mb)    -    S.Yu.Nesterov

HIGH ENERGY PHYSICS DIVISION                    HEPD Seminars (Abstracts and presentations) - Russian version