Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity <i>p</i> plus Pb Collisions at √<i><SUP>s</SUP></i>NN=8.16 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Eroe, J
et al (show 2279 more authors) (2018) Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity <i>p</i> plus Pb Collisions at √<i><SUP>s</SUP></i>NN=8.16 TeV. PHYSICAL REVIEW LETTERS, 121 (8). 082301-.

Access the full-text of this item by clicking on the Open Access link.

Abstract

The elliptic azimuthal anisotropy coefficient (v_{2}) is measured for charm (D^{0}) and strange (K_{S}^{0}, Λ, Ξ^{-}, and Ω^{-}) hadrons, using a data sample of p+Pb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy of sqrt[s_{NN}]=8.16  TeV. A significant positive v_{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_{2} than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at sqrt[s_{NN}]=5.02  TeV, also presented.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 04 Dec 2019 16:39
Last Modified: 13 Oct 2023 09:10
DOI: 10.1103/PhysRevLett.121.082301
Open Access URL: https://doi.org/10.1103/PhysRevLett.121.082301
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3064826