Hi, Hans and I are working on a measurement of prompt production of long-lived charged particles and are comparing the double-differential cross-section in bins of pseudorapidity and transverse momentum with generator predictions. In the past, we accessed the generators via CRMC, while we use Chromo now.
We produced two comparison plots of the differential cross-sections in proton-proton collisions at 13 TeV from Chromo 0.5.1 and CRMC for QGSJet II.04 and Sibyll 2.3d, which you can find attached (the last subplot is empty due to a changed binning). For QGSJet, there is an offset of around 4 % in most bins. For Sibyll, the deviations are larger at low transverse momentum and vanish towards higher values. Do you have an idea where these differences may come from?
Hi, Hans and I are working on a measurement of prompt production of long-lived charged particles and are comparing the double-differential cross-section in bins of pseudorapidity and transverse momentum with generator predictions. In the past, we accessed the generators via CRMC, while we use Chromo now.
We produced two comparison plots of the differential cross-sections in proton-proton collisions at 13 TeV from Chromo 0.5.1 and CRMC for QGSJet II.04 and Sibyll 2.3d, which you can find attached (the last subplot is empty due to a changed binning). For QGSJet, there is an offset of around 4 % in most bins. For Sibyll, the deviations are larger at low transverse momentum and vanish towards higher values. Do you have an idea where these differences may come from?
QGSJet.pdf Sibyll.pdf