Nuclear modification factor of D0mesons in PbPbcollisions at ?sNN=5.02 TeV

Yükleniyor...
Küçük Resim

Tarih

2018

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier

Erişim Hakkı

Özet

The transverse momentum (pT) spectrum of prompt D0mesons and their antiparticles has been measured via the hadronic decay channels D0?K??+and D0?K+??in ppand PbPbcollisions at a centre-of-mass energy of 5.02TeVper nucleon pair with the CMS detector at the LHC. The measurement is performed in the D0meson pTrange of 2–100GeV/cand in the rapidity range of |y| <1. The pp(PbPb) dataset used for this analysis corresponds to an integrated luminosity of 27.4pb?1(530?b?1). The measured D0meson pTspectrum in pp collisions is well described by perturbative QCD calculations. The nuclear modification factor, comparing D0meson yields in PbPband ppcollisions, was extracted for both minimum-bias and the 10% most central PbPbinteractions. For central events, the D0meson yield in the PbPbcollisions is suppressed by a factor of 5–6 compared to the ppreference in the pTrange of 6–10GeV/c. For D0mesons in the high-pTrange of 60–100GeV/c, a significantly smaller suppression is observed. The results are also compared to theoretical calculations

Açıklama

Anahtar Kelimeler

Physics, Suppression, Quark gluon plasma, Shadowing, D-meson, Open heavy-flavour

Kaynak

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

Sayı

Künye

Physics Letters B 782 (2018) 474–496