README ====== Dataset accompanying: B. Linek, M. Łuszczak, W. Schäfer and A. Szczurek, “Probing gluon GTMDs of the proton in deep inelastic diffractive dijet production at HERA”, Physical Review D 110, 054027 (2024). OVERVIEW -------- This archive contains numerical results and ROOT plotting macros used for the study of deep-inelastic diffractive dijet production in electron-proton collisions at HERA. The numerical tables provide differential cross sections calculated for several models of the proton gluon generalized transverse-momentum-dependent distribution (GTMD). The archive also contains H1 experimental points used in selected comparisons, together with ROOT macros and a number of pre-generated EPS/PDF plots. All files are stored in a single directory: rys_Linek_et_al/ The archive contains: 198 numerical data files (*.dat) 35 ROOT plotting macros (*.C) 21 EPS plot files (*.eps) 20 PDF plot files (*.pdf) GTMD MODELS ----------- The principal one-dimensional distributions are provided for six GTMD models. The filename suffixes used in the archive are: KT Kowalski-Teaney (bSat) model GBW Golec-Biernat-Wüsthoff model MV MV-IR model MPM Moriggi-Peccini-Machado model Boer MV-BS 2021 / Boer et al. implementation BS MV-BS 2023 model These names follow the internal filenames. The labels appearing in the plotting macros should be regarded as the authoritative labels for the corresponding curves. NUMERICAL DATA FILES -------------------- Most theory tables follow the naming convention dsig_d_.dat For example: dsig_dQ2_GBW.dat dsig_dbeta_KT.dat dsig_dpt1_MPM.dat dsig_dlog10xp_BS.dat For ordinary one-dimensional distributions, the files contain two numerical columns: column 1 : value of the observable column 2 : differential cross section The physical units can be read directly from the axis definitions in the corresponding ROOT macro. Cross sections are generally given in pb, with the appropriate inverse powers of GeV or angular units where required. The archive contains distributions in, among others: Q2 photon virtuality yin DIS inelasticity y Wgamp photon-proton invariant mass W_gamma p tmand momentum-transfer variable t beta diffractive variable beta log10xp log10(x_IP) log10xb log10(x_Bj) minv dijet invariant mass pt, pt1, pt2 transverse-momentum variables eta1, eta2 jet pseudorapidities deeta pseudorapidity difference xi1, xi2 longitudinal/light-cone variables used in the analysis z z variable used in the paper phi azimuthal angle between Delta_perp and P_perp phiej electron-jet azimuthal angle theta angular distribution delta additional dijet correlation variable Some observables are available only for a subset of the models. TWO-DIMENSIONAL DISTRIBUTIONS ----------------------------- Files with names such as dsig_deta12_.dat dsig_dpt12_.dat dsig_dxi12_.dat contain two-dimensional distributions. They have three columns: column 1 : first kinematic variable column 2 : second kinematic variable column 3 : double-differential cross section Examples include distributions in (eta1,eta2), (pT1,pT2), and (xi1,xi2). Dedicated ROOT macros dd__eta12.C dd__pt12.C dd__xi12.C produce surface plots of these tables for the individual models. EXPERIMENTAL DATA ----------------- Files beginning with HERA12_ contain H1 experimental points used in selected comparisons, for example: HERA12_Q2.dat HERA12_log10xp.dat HERA12_pt1.dat HERA12_tmand.dat HERA12_yin.dat HERA12_deeta.dat These tables contain the measured value, the cross section, and corresponding uncertainties. The exact column names are given in the first line of each file. The ROOT macros automatically overlay these data where they are used in the publication. ROOT PLOTTING MACROS -------------------- The files dd_.C read the numerical theory tables, optionally read the experimental points, and generate the corresponding comparison plots. Examples: dd_Q2.C dd_beta.C dd_log10xp.C dd_pt1.C dd_tmand.C dd_yin.C dd_minv.C dd_z.C dd_phi.C The macros contain the plot ranges, axis labels, units, line styles, model labels and kinematic annotations used for the figures. They are standard ROOT C++ macros and can normally be executed from the directory containing the data files, e.g. root -l .x dd_Q2.C or, depending on the local ROOT installation, root -l -q dd_Q2.C Relative filenames in the macros assume that the macro and the corresponding *.dat files remain in the same directory. PRE-GENERATED FIGURES --------------------- The archive contains EPS and PDF files generated by the ROOT macros. Examples are: epjj_dsig_dQ2_H1.pdf epjj_dsig_dbeta_H1.pdf epjj_dsig_dlog10xp_H1.pdf epjj_dsig_dpt1_H1.pdf epjj_dsig_dtmand_H1.pdf epjj_dsig_dyin_H1.pdf epjj_dsig_dminv_H1.pdf epjj_dsig_dz_H1.pdf epjj_dsig_dtheta_H1.pdf and several additional distributions such as eta, xi, electron-jet azimuth and two-dimensional model plots. The PDF/EPS files are convenience copies of plots and are not required for reuse of the numerical dataset. ADDITIONAL / INTERMEDIATE TABLES -------------------------------- A number of files with suffix "_el" and some model-specific tables are included in the archive but are not read by the principal comparison macros supplied here. They should therefore be regarded as supplementary or intermediate calculation output rather than as files required to regenerate the principal plots. Likewise, not every numerical table has a corresponding pre-generated plot in the archive; the numerical collection is more extensive than the set of final figure files. REPRODUCIBILITY --------------- To regenerate a plot: 1. Unpack the archive without changing the filenames. 2. Enter the directory rys_Linek_et_al/. 3. Start ROOT. 4. Execute the relevant dd_.C macro. The plotting macros expect the data tables in the current working directory. CITATION -------- If these numerical results are used in another work, please cite the associated publication: B. Linek, M. Łuszczak, W. Schäfer and A. Szczurek, “Probing gluon GTMDs of the proton in deep inelastic diffractive dijet production at HERA”, Phys. Rev. D 110, 054027 (2024).