The CMS Collaboration has recently measured the B-meson production in pPb collisions at root S-NN = 5.02 TeV via the reconstruction of the decays B+ -> J/psi K+, B-0 -> J/psi K*(892) and B-S(0) -> J/psi phi with J/psi -> mu(+)mu(-) The study of B-meson production in proton nucleus collisions allows one to investigate the relevance of cold nuclear matter effects and, in addition, provides an important baseline for the understanding of the heavy-quark energy loss mechanisms in PbPb collisions. In proton proton collisions, open heavy-flavour measurements at the LHC provide a way to test predictions of quantum chromodynamics at the highest available collision energies. In these proceedings, the measurements of the PT-differential cross section of B+, B-0, B-S(0) and the y-differential cross section of B+ in pPb collisions at root S-NN = 5.02 TeV will be presented. The nuclear modification factors R-pA(FONLL) of B+, B-0 and B-S(0), obtained by using the FONLL predictions at root S = 5.02 TeV as a pp reference, will also be shown. (C) 2014 CERN. Published by Elsevier B.V. All rights reserved.
