Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity
Name
PhysRevLett.121.082301.pdf
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455.77 KB
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Checksum (MD5)
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Author(s)
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Date Issued
August 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Sirunyan, A. M., et al. “Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p + Pb Collisions at √s[subscript NN] = 8.16 TeV.” Physical Review Letters, vol. 121, no. 8, Aug. 2018. © 2018 CERN.
Version
Final published version
Abstract
The elliptic azimuthal anisotropy coefficient (v[subscript 2]) is measured for charm (D[superscript 0]) and strange (K[superscript 0][subscript S], Λ, Ξ[superscript -], and Ω[superscript -]) hadrons, using a data sample of p+Pb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy of √s[subscript NN] =8.16 TeV. A significant positive v[subscript 2] signal from long-range azimuthal correlations is observed for all particle species in high-multiplicity p+Pb collisions. The measurement represents the first observation of possible long-range collectivity for open heavy flavor hadrons in small systems. The results suggest that charm quarks have a smaller v[subscript 2] than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at √s[subscript NN] = 5.02 TeV, also presented.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.121.082301
