Observation Of Prompt J/? Meson Elliptic Flow İn High-Multiplicity Ppb Collisions At ?Snn=8.16 Tev

Yükleniyor...
Küçük Resim

Tarih

2019

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

The CMS Collaboration

Erişim Hakkı

Özet

A measurement of the elliptic flow (v2) of prompt J/? mesons in high-multiplicity pPb collisions is reported using data collected by the CMS experiment at a nucleonnucleon center-of-mass energy ? sNN = 8.16 TeV. Prompt J/? mesons decaying into two muons are reconstructed in the rapidity region in the nucleon-nucleon center-ofmass frame (ycm), corresponding to either ?2.86 < ycm < ?1.86 or 0.94 < ycm < 1.94. The average v2 result from the two rapidity ranges is reported over the transverse momentum (pT) range from 0.2 to 10 GeV. Positive v2 values are observed for the prompt J/? meson, as extracted from long-range two-particle correlations with charged hadrons, for 2 < pT < 8 GeV. The prompt J/? results are compared with previous CMS measurements of elliptic flow for open charm mesons (D0) and strange hadrons. From these measurements, constraints can be obtained on the collective dynamics of charm quarks produced in high-multiplicity events arising from small systems.

Açıklama

Anahtar Kelimeler

CMS, Heavy-ion physics, Correlation, Flow, pPb, Heavy flavor

Kaynak

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

Sayı

Künye

Physics Letters B 791 (2019) 172–194