Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV

Title
Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV
Author
김태정
Keywords
CMS; Forward physics; Proton-lead; Cross section
Issue Date
2016-06
Publisher
ELSEVIER SCIENCE BV
Citation
PHYSICS LETTERS B, v. 759, Page. 641-662
Abstract
The inelastic hadronic cross section in proton-lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L = 12.6 +/- 0.4 nb(-1), has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton-lead collisions with hadronic activity produced in the pseudorapidity ranges 3 ˂ eta ˂ 5 and/or -5 ˂ eta ˂ -3, corrected for photon-induced contributions, experimental acceptance, and other instrumental effects. The inelastic cross section is measured to be sigma(inel)(pPb) = 2061 +/- 3(stat) +/- 34(syst) +/- 72(lumi) mb. Various Monte Carlo generators, commonly used in heavy ion and cosmic ray physics, are found to reproduce the data within uncertainties. The value of sigma(inel)(pPb) is compatible with that expected from the proton-proton cross section at 5.02 TeV scaled up within a simple Glauber approach to account for multiple scatterings in the lead nucleus, indicating that further net nuclear corrections are small. (C) 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org//licenses/by/4.0/).
URI
https://www.sciencedirect.com/science/article/pii/S0370269316302805?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/72316
ISSN
0370-2693; 1873-2445
DOI
10.1016/j.physletb.2016.06.027
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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