Elliptic flow of charm and strange hadrons in high-multiplicity p+Pb collisions at sNN =8.16 TeV
The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (K0 S, Λ, Ξ−, and Ω−) hadrons, using a data sample of p þ Pb collisions collected by the CMS experiment, at a nucleonnucleon center-of-mass energy of ffiffiffiffiffiffiffi sNN p ¼ 8.16 TeV. A significant pos...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/69949/ http://irep.iium.edu.my/69949/ http://irep.iium.edu.my/69949/ http://irep.iium.edu.my/69949/1/69949_Elliptic%20Flow%20of%20Charm%20and%20Strange%20Hadrons_article.pdf http://irep.iium.edu.my/69949/2/69949_Elliptic%20Flow%20of%20Charm%20and%20Strange%20Hadrons_scopus.pdf http://irep.iium.edu.my/69949/13/69949_Elliptic%20Flow%20of%20Charm%20and%20Strange%20Hadrons%20in%20High-Multiplicity%20p%2BPb%20Collisions%20at%20sNN%20%3D8.16%20TeV_wos.pdf |
| Summary: | The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (K0
S, Λ, Ξ−,
and Ω−) hadrons, using a data sample of p þ Pb collisions collected by the CMS experiment, at a nucleonnucleon center-of-mass energy of ffiffiffiffiffiffiffi
sNN p ¼ 8.16 TeV. A significant positive v2 signal from long-range
azimuthal correlations is observed for all particle species in high-multiplicity p þ 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 v2 than the lighter quarks,
probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system
at ffiffiffiffiffiffiffi
sNN p ¼ 5.02 TeV, also presented. |
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