Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity P + Pb Collisions at ? S Nn = 8.16 Tev
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Abstract
The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (KS0, 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 sNN=8.16 TeV. A significant positive v2 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 v2 than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at sNN=5.02 TeV, also presented.
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Binary alloys, Vanadium alloys, Elliptic flows, High multiplicity, Center-of-mass energies, General Physics, Elliptic flows, ROOT-S(NN)=5.02 TEV, 550, COLLECTIVE FLOW, Physics, Multidisciplinary, nucl-ex, 530, High Energy Physics - Experiment, FISICA DELLE PARTICELLE, PARTICLE PHYSICS, Physics and Astronomy (all), Center-of-mass energies, 2-PARTICLE CORRELATIONS, SIDE, info:eu-repo/classification/ddc/530, LONG-RANGE, Nuclear Experiment, Vanadium alloys, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, Multidisciplinary, Science & Technology, 02 Physical Sciences, ion-hadron scattering (experiments); charm and strange hadrons; lhc; cms, PARTICLE PHYSICS;LARGE HADRON COLLIDER;CMS, hep-ex, CMS, Physics, ddc:530, Binary alloys, LARGE HADRON COLLIDER, Q1 Science (General) / természettudomány általában, EVENT, RELATIVISTIC NUCLEAR COLLISIONS, Physical Sciences, CMS Collaboration, Physique des particules élémentaires, PARTICLE PHYSICS, RELATIVISTIC NUCLEAR COLLISIONS; RANGE ANGULAR-CORRELATIONS; LONG-RANGE; 2-PARTICLE CORRELATIONS; ROOT-S(NN)=5.02 TEV; COLLECTIVE FLOW; SIDE; PPB; LHC; EVENT, LHC, PPB, High multiplicity, RANGE ANGULAR-CORRELATIONS
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01 natural sciences, 0103 physical sciences, 0105 earth and related environmental sciences, 06 humanities and the arts, 0604 arts
Citation
Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Elliptic flow of charm and strange hadrons in high-multiplicity p + Pb collisions at √ s NN = 8.16 TeV. Physical Review Letters, 121(8). doi:10.1103/PhysRevLett.121.082301
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Q1
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Q1
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Physical Review Letters
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121
Issue
8
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