2025/01/24 by Flore, Carlo, Kikoła, Daniel, Kusina, Aleksander +3 · 2 citations
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th)
paper · doi:10.48550/arxiv.2501.14487
We have extended \tt MadGraph5_aMC@NLO capabilities by implementing computations for asymmetric hadron-hadron collisions, including proton-nucleus, pion-hadron or nucleus-nucleus collisions in order to obtain a tool for automated perturbative computations of cross sections (or ratios of cross sections) in asymmetric reactions at next-to-leading (NLO) order in αS in collinear factorisation. This tool, like the original symmetric version of MadGraph5_aMC@NLO, automatically computes cross sections for different factorisation and renormalisation scales and PDFs provided by the \tt LHAPDF library, thereby allowing for an easy assessment of the associated theoretical uncertainties. In this paper, we present the validation of our code using W and Z boson production in pPb collisions and Drell-Yan-pair production in πW collisions. We also illustrate the capabilities of the framework by providing cross section and nuclear modification factors with their uncertainties for the production of W and Z bosons, charm and bottom quarks as well as associated production of b b+H0 in pPb collisions at the LHC.