Charm quark and meson production in association with single-jet at the LHC

Abstract

We discuss charm quark/antiquark and charmed meson production in association with one extra jet (gluon, quark, antiquark) at the LHC. The calculations are performed both in collinear and k T -factorization approaches. Different unintegrated gluon distribution functions are used in the k T -factorization approach. Several predictions for the LHC are presented. We show distributions in rapidity and transverse momenta of c/c (or charmed mesons) and the associated jet as well as some two-dimensional observables. Interesting correlation effects are predicted, e.g. in azimuthal angles ϕ cc and ϕ c-jet . We have also discussed a relation of the 2 → 2 and 2 → 3 partonic calculations in the region of large transverse momenta of charm quarks/antiquarks as well as the similarity of the next-to-leading order collinear approach and the k T -factorization approach with the KMR unintegrated parton distribution functions. Integrated cross sections for D 0 + jet production for ATLAS detector acceptance and for different cuts on jet transverse momenta are also presented.

Production of Λc baryons at the LHC within the kT -factorization approach and independent parton fragmentation picture

“…As discussed also in Ref. [20] the k T -factorization approach with the KMR UGDF gives results well consistent with collinear NLO approach. For the calculation of the KMR distribution we used here up-to-date collinear MMHT2014 gluon PDFs [26].…”

“…Very recently, this approach was also profitably applied e.g. for pp → cc + jet X [20], pp → cc + 2jets X [21] and pp → cccc X [22].…”

J/ψ -meson production within improved color evaporation model with the kT -factorization approach for cMaciuła1, Szczurek2, Cisek3 2019Phys. Rev. DSelf Cite

“…As discussed also in Ref. [18] the k Tfactorization approach with the KMR UGDF gives results consistent with collinear NLO approach. For the calculation of the KMR distribution we used here up-to-date collinear MMHT2014 gluon PDFs [26].…”

Enhanced production of $\Lambda_{c}$ in proton-proton collisions at the LHC

“…As discussed also in Ref. [15] the k T -factorization approach with the KMR UGDF gives results well consistent with collinear NLO approach. For the calculation of the KMR distribution we used here up-to-date collinear MMHT2014 gluon PDFs [16].…”