Abstract
We study inclusive charm and bottom production, for both D and B mesons, in p–Pb collisions at the LHC. Numerical results for pT-differential production cross sections are obtained at next-to-leading-order in the general-mass variable-flavour-number scheme. We compare our results with recent data from ALICE, LHCb and CMS at a centre-of-mass energy of 5 TeV and find good agreement. A comparison with p–p cross sections does not reveal the presence of nuclear initial-state interaction effects that could be expected to become visible as deviations of the ratio of p–Pb and p–p cross sections from one.
Highlights
The study of heavy-quark production in p–p collisions at Large Hadron Collider (LHC) energies is a useful test of perturbative Quantum Chromodynamics (QCD) since the heavy quark mass provides a hard scale that allows calculations within perturbation theory
Spiesberger / Nuclear Physics B 925 (2017) 415–430 are based on the factorization approach, in which cross sections are calculated as a convolution of three terms: the parton distribution functions (PDF) of the incoming protons, the partonic hard scattering cross sections computed as a perturbative series in the strong interaction coupling constant, and the fragmentation functions (FF), describing the relative production yield and momentum distribution for a given heavy hadron (D or B meson) in a parton
For p–p collisions, a rather good agreement between theory predictions and LHCb data for the differential cross section dσ/dpT in various rapidity bins in the forward direction was already observed in Ref. [21]
Summary
The study of heavy-quark (charm or bottom) production in p–p collisions at LHC energies is a useful test of perturbative Quantum Chromodynamics (QCD) since the heavy quark mass provides a hard scale that allows calculations within perturbation theory. Due to the interest in the nuclear modification factor RpPb for heavy quark hadron production, in particular as we expect to obtain important information about initial-state interaction effects in Pb–Pb collisions, it is desirable to study RpPb within other factorization schemes. This is the purpose of the present work in which we provi√de results from calculations of p–p cross sections dσ/dpT for D and B meson production at S = 5.02 TeV in the framework of the G√M-VFNS.
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