Dual_model

Dual parameterization of nucleon GPDs

V. Guzey and T. Teckentrup, Phys. Rev. D 74, 054027 (2006)
V. Guzey and T. Teckentrup, Phys. Rev. D. 79 , 017501 (2009) [arXiv:0810.3899 [hep-ph]]

Description of the model

Comparison to DVCS data

Compton Form Factors
of proton and neutron
(with downloads)

DVCS asymmetries
A_LU, A_C and A_UT
of proton and neutron
(with downloads)

Nuclear GPDs and nuclear
DVCS asymmetries (with downloads)

Back to V.Guzey at PNPI

DVCS asymmetries A_LU, A_C and A_UT of proton and neutron

Using the dual parameterization of nucleon GPDs, we calculated the corresponding CFFs.
Combining those CFFs with the BMK expressions for DVCS asymmetries (A.V. Belitsky, D. Mueller and A. Kirchner, Nucl. Phys. B629 (2002) 323),
we obtained predictions for the A_LU, A_C and A_UT DVCS asymmetries on the proton and neutron targets.

The table below contains links to the FORTRAN codes allowing to calculate A_LU, A_C and A_UT for the proton and neutron for the kinematics covered by the grids for the CFFs: 0.01 < x_B < 0.5, 1 < Q² < 10 GeV² and 0.005 < |t| < 1 GeV², and for a wide range of J_u and J_d, -0.6 < J_u < 0.6 and -1 < J_d < 1.
The energy and the charge of the beam is specified by the user.
All commentaries related to the use of the codes are found in the codes.

Proton	Neutron
Code for proton A_LU Code for proton A_C Code for proton A_UT Grid for the proton CFF H Grids for the proton CFF E	Code for neutron A_LU Code for neutron A_C Code for neutron A_UT Grid for the neutron CFF H Grids for the neutron CFF E

Dual parameterization of nucleon GPDs

DVCS asymmetries ALU, AC and AUT of proton and neutron

DVCS asymmetries A_LU, A_C and A_UT of proton and neutron