PROBING GPDs IN EXCLUSIVE ELECTROPRODUCTION OF DIJETS DATA Overview -------- This package contains numerical data files for the differential cross sections in several kinematical variables and azimuthal-angle coefficients presented in the publication. The calculation concerns exclusive diffractive dijet production in electron-proton scattering, e p -> e' j j p, in collinear QCD factorization, with generalized parton distributions (GPDs) used as the nonperturbative input and modeled in the double distribution (DD) approach. The package is divided into two data sets: CLSS1_gen_kin_data/ Results for the general kinematic region considered in the paper. CLSS1_Zeus_kin_data/ Results obtained with the ZEUS kinematic cuts used for comparison with the available HERA data. The data files are plain-text ASCII files with whitespace-separated numerical columns and no header lines. Directory Structure ------------------- CLSS1_gen_kin_data/ | +-- dsig_dQ2_GPD*.dat +-- dsig_dWgamp_GPD*.dat +-- dsig_dbeta_GPD*.dat +-- dsig_ddeeta_GPD*.dat +-- dsig_ddelta_GPD*.dat +-- dsig_deta1_GPD*.dat +-- dsig_deta2_GPD*.dat +-- dsig_deta12_GPD*.dat +-- dsig_dlog10xb_GPD*.dat +-- dsig_dlog10xp_GPD*.dat +-- dsig_dminv_GPD*.dat +-- dsig_dphi_GPD*.dat +-- dsig_dpt_GPD*.dat +-- dsig_dtmand_GPD*.dat +-- dsig_dyin_GPD*.dat +-- dsig_dz_GPD*.dat CLSS1_Zeus_kin_data/ | +-- A1.dat +-- A2.dat +-- dsig_dQ2_GPD_*.dat +-- dsig_dWgamp_GPD_*.dat +-- dsig_dbeta_GPD*.dat +-- dsig_ddeeta_GPD_*.dat +-- dsig_ddelta_GPD_*.dat +-- dsig_deta1_GPD_*.dat +-- dsig_deta2_GPD_*.dat +-- dsig_deta12_GPD_*.dat +-- dsig_dlog10xb_GPD_*.dat +-- dsig_dlog10xp_GPD_*.dat +-- dsig_dminv_GPD_*.dat +-- dsig_dphi_GPD_*.dat +-- dsig_dpt_GPD_*.dat +-- dsig_dtmand_GPD_*.dat +-- dsig_dyin_GPD_*.dat +-- dsig_dz_GPD_*.dat General Kinematics Data ----------------------- The directory CLSS1_gen_kin_data contains 80 numerical .dat files. For each differential observable, the files without a suffix give the total GPD result, while the suffixes identify the individual contributions: GPD total contribution GPD_g gluon contribution GPD_s sea-quark contribution GPD_v valence-quark contribution GPD_c gluon-induced heavy c cbar contribution The observables included are: dsig_dQ2 differential cross section in Q^2 dsig_dWgamp differential cross section in W_(gamma*p) dsig_dbeta differential cross section in beta dsig_ddeeta differential cross section in Delta eta dsig_ddelta differential cross section in delta=p'-p dsig_deta1 differential cross section in eta_1 dsig_deta2 differential cross section in eta_2 dsig_deta12 double-differential distribution in eta_1 and eta_2 dsig_dlog10xb differential cross section in log10(x_Bj) dsig_dlog10xp differential cross section in log10(x_P) dsig_dminv differential cross section in the dijet invariant mass dsig_dphi differential cross section in the azimuthal angle phi dsig_dpt differential cross section in jet transverse momentum dsig_dtmand differential cross section in t_mand dsig_dyin differential cross section in y dsig_dz differential cross section in z The single-differential files contain two columns: column 1: bin-center/value of the plotted kinematic variable column 2: corresponding differential cross section The eta12 files contain three columns: column 1: eta_1 column 2: eta_2 column 3: corresponding double-differential cross section Example files (in Q^2): dsig_dQ2_GPD.dat dsig_dQ2_GPD_g.dat dsig_dQ2_GPD_s.dat dsig_dQ2_GPD_v.dat dsig_dQ2_GPD_c.dat ZEUS Kinematics Data -------------------- The directory CLSS1_Zeus_kin_data contains 96 numerical .dat files. These files correspond to the ZEUS kinematic region used in the publication for comparison with the HERA exclusive dijet data. The main suffixes used for the ZEUS distributions are: GPD_T transverse contribution GPD_L longitudinal contribution GPD_cT heavy c cbar contribution in the transverse channel GPD_cL heavy c cbar contribution in the longitudinal channel The ZEUS data set contains differential distributions in longitudinal and transverse channels separately in the variables: Q2 W_(gamma*p) beta Delta eta delta eta_1 eta_2 (eta_1, eta_2) log10(x_Bj) log10(x_P) dijet invariant mass phi jet transverse momentum t_mand y z The corresponding files follow the naming convention dsig_d_GPD_.dat For the beta distribution in ZEUS kinematics, files are provided for the individual partonic contributions: dsig_dbeta_GPD.dat dsig_dbeta_GPD_g.dat dsig_dbeta_GPD_s.dat dsig_dbeta_GPD_v.dat dsig_dbeta_GPD_c.dat For the azimuthal distributions, files are also provided for five representative beta bins: beta1, beta2, beta3, beta4, beta5 with separate files for the total, sea, valence, gluon and heavy-quark contributions. For example (for the first beta bin): dsig_dphi_GPD_beta1.dat dsig_dphi_GPD_s_beta1.dat dsig_dphi_GPD_v_beta1.dat dsig_dphi_GPD_g_beta1.dat dsig_dphi_GPD_c_beta1.dat and analogously for beta2 through beta5. The single-differential ZEUS files contain two columns: column 1: bin-center/value of the plotted kinematic variable column 2: corresponding differential cross section The eta12 files contain three columns: column 1: eta_1 column 2: eta_2 column 3: corresponding double-differential cross section Azimuthal Coefficients ---------------------- A1.dat and A2.dat contain the Fourier coefficients of azimuthal modulation extracted from the ZEUS-kinematic phi distributions for each beta bin. File: A1.dat column 1: beta-bin representative value column 2: A1 File: A2.dat column 1: beta-bin representative value column 2: A2 The supplied files contain five beta-bin entries, corresponding to the five beta bins used for the phi distributions. File Naming Conventions ----------------------- dsig_d_GPD.dat Total result. dsig_d_GPD_g.dat Gluon contribution. dsig_d_GPD_s.dat Sea-quark contribution. dsig_d_GPD_v.dat Valence-quark contribution. dsig_d_GPD_c.dat Gluon-induced heavy c cbar contribution. In the ZEUS data set: _T total transverse contribution _L total longitudinal contribution _cT heavy c cbar contribution, transverse channel _cL heavy c cbar contribution, longitudinal channel For phi distributions: _beta1 ... _beta5 identify the five beta bins. File Format ----------- All .dat files are plain-text numerical files. No column headers are included in the data files. Values are written in scientific notation or decimal notation and are separated by whitespace, so the files can be read directly by common plotting and numerical-analysis programs. Typical two-column structure: x_1 y_1 x_2 y_2 ... Typical three-column structure for eta12 distributions: eta1_1 eta2_1 value_1 eta1_2 eta2_2 value_2 ... Reference --------- T. J. Chall, M. Łuszczak, W. Schäfer and A. Szczurek, "Probing GPDs in exclusive electroproduction of dijets," Phys. Rev. D 113, 114012 (2026). DOI: 10.1103/p7m5-qqyx INSPIRE-HEP: https://inspirehep.net/literature/3128130 Journal: https://journals.aps.org/prd/abstract/10.1103/p7m5-qqyx arXiv: https://arxiv.org/abs/2603.09686