Journal article
Transverse momentum, rapidity, and centrality dependence of inclusive charged-particle production in sNN=5.02 TeV p + Pb collisions measured by the ATLAS experiment
Physics letters. B, Vol.763, pp.313-336
2016
DOI: 10.1016/j.physletb.2016.10.053
Abstract
Measurements of the per-event charged-particle yield as a function of the charged-particle transverse momentum and rapidity are performed using p+Pb collision data collected by the ATLAS experiment at the LHC at a centre-of-mass energy of sNN=5.02TeV. Charged particles are reconstructed over pseudorapidity |η|<2.3 and transverse momentum between 0.1 GeV and 22 GeV in a dataset corresponding to an integrated luminosity of 1 μb−1. The results are presented in the form of charged-particle nuclear modification factors, where the p+Pb charged-particle multiplicities are compared between central and peripheral p+Pb collisions as well as to charged-particle cross sections measured in pp collisions. The p+Pb collision centrality is characterized by the total transverse energy measured in −4.9<η<−3.1, which is in the direction of the outgoing lead beam. Three different estimations of the number of nucleons participating in the p+Pb collision are carried out using the Glauber model and two Glauber–Gribov colour-fluctuation extensions to the Glauber model. The values of the nuclear modification factors are found to vary significantly as a function of rapidity and transverse momentum. A broad peak is observed for all centralities and rapidities in the nuclear modification factors for charged-particle transverse momentum values around 3 GeV. The magnitude of the peak increases for more central collisions as well as rapidity ranges closer to the direction of the outgoing lead nucleus. © 2016 The Author(s)
Details
- Title: Subtitle
- Transverse momentum, rapidity, and centrality dependence of inclusive charged-particle production in sNN=5.02 TeV p + Pb collisions measured by the ATLAS experiment
- Creators
- G Aad - Aix-Marseille UniversitéB Abbott - University of OklahomaJ Abdallah - University of IowaO Abdinov - Azerbaijan National Academy of SciencesB Abeloos - Université Paris-SaclayR Aben - University of AmsterdamTorsten Åkesson - Particle PhysicsSimona Bocchetta - Particle PhysicsLENE Bryngemark - Particle PhysicsCaterina Doglioni - Particle PhysicsAnders Floderus - Particle PhysicsVincent Hedberg - Particle PhysicsGöran Jarlskog - Particle PhysicsElse Lytken - Particle PhysicsUlf Mjörnmark - Particle PhysicsOxana Smirnova - Particle PhysicsOleksandr Viazlo - Particle PhysicsATLAS Collaboration
- Contributors
- U Mallik (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.763, pp.313-336
- DOI
- 10.1016/j.physletb.2016.10.053
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier B.V
- Grant note
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- Language
- English
- Date published
- 2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199954702771
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