Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p plus Pb Collisions at root(NN)-N-s=8.16 TeV
- Title
- Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p plus Pb Collisions at root(NN)-N-s=8.16 TeV
- Author
- 김태정
- Keywords
- RELATIVISTIC NUCLEAR COLLISIONS; RANGE ANGULAR-CORRELATIONS; LONG-RANGE; 2-PARTICLE CORRELATIONS; SIDE; PPB; COLLECTIVITY; EVENT
- Issue Date
- 2018-08
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 121, no. 8, Article no. 082301
- Abstract
- The elliptic azimuthal anisotropy coefficient (upsilon(2)) is measured for charm (D-0) and strange (K-S(0), Lambda, Xi(-), and Omega(-)) hadrons, using a data sample of p + Pb collisions collected by the CMS experiment, at a nucleonnucleon center-of- mass energy of root(NN)-N-s = 8.16 TeV. A significant positive upsilon(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 upsilon(2) than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at root(NN)-N-s = 5.02 TeV, also presented.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.082301https://repository.hanyang.ac.kr/handle/20.500.11754/119680
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.121.082301
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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