Bose-Einstein Correlations in pp, pPb, and PbPb Collisions at √sNN = 0.9 – 7 TeV
Name
PhysRevC.97.064912.pdf
Size
4.41 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Asilar, E.
Bergauer, T.
Brandstetter, J.
Brondolin, E.
Dragicevic, M.
Erö, J.
Date Issued
June 2018
Journal
Physical Review C
Publisher
American Physical Society
Citation
Sirunyan, A. M., et al. “Bose-Einstein Correlations in p p , p Pb , and PbPb Collisions at √sNN = 0.9 – 7 TeV.” Physical Review C, vol. 97, no. 6, June 2018. © 2018 CERN, for the CMS Collaboration
Version
Final published version
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 (k_{T}) 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 k_{T}. 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 k[subscript T] largely factorize. At the same multiplicity, the radii are relatively independent of the colliding system and center-of-mass energy.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevC.97.064912
