B-meson reconstruction performance and spectra in pp and pPb collisions in CMS

被引：1
作者：
Innocenti, Gian Michele [1 ]
机构：
[1] MIT, Cambridge, MA 02139 USA
来源：
NUCLEAR PHYSICS A | 2014年 / 931卷
关键词：
Quark gluon plasma; Heavy flavours; B meson;
D O I：
10.1016/j.nuclphysa.2014.09.072
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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.
引用
收藏
页码：1184 / 1188
页数：5
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