Bose-Einstein correlations in pp, pPb, and PbPb collisions at root s(NN)=0.9-7 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Quantum-statistical (Bose-Einstein) two-particle correlations are measured in pp collisions at √s=0.9, 2.76, and 7 TeV, as well as in pPb and peripheral PbPb collisions at nucleon-nucleon center-of-mass energies of 5.02 and 2.76 TeV, respectively, using the CMS detector at the Large Hadron Collider. Separate analyses are performed for same-sign unidentified charged particles as well as for same-sign pions and kaons identified via their energy loss in the silicon tracker. The characteristics of the one-, two-, and three-dimensional correlation functions are studied as functions of the pair average transverse momentum (kT) and the charged-particle multiplicity in the event. For all systems, the extracted correlation radii steadily increase with the event multiplicity, and decrease with increasing kT. The radii are in the range 1–5 fm, the largest values corresponding to very high multiplicity pPb interactions and to peripheral PbPb collisions with multiplicities similar to those seen in pPb data. It is also observed that the dependencies of the radii on multiplicity and kT largely factorize. At the same multiplicity, the radii are relatively independent of the colliding system and center-of-mass energy.
Date Issued
2018-06-14
Date Acceptance
2018-06-01
Citation
PHYSICAL REVIEW C, 2018, 97 (6)
ISSN
2469-9985
Publisher
American Physical Society
Journal / Book Title
PHYSICAL REVIEW C
Volume
97
Issue
6
Copyright Statement
© 2018 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000435334000006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Nuclear
Physics
QUARK-GLUON PLASMA
PION INTERFEROMETRY
COULOMB CORRECTIONS
UNDERLYING EVENT
CHARGED PIONS
MOMENTUM
DISTRIBUTIONS
DETECTORS
SIZE
LHC
Publication Status
Published
Article Number
ARTN 064912
Date Publish Online
2018-06-14