# Measurement of quarkonium production in proton–lead and proton–proton collisions at 5.02TeV with the ATLAS detector

The ATLAS collaboration

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

77 Цитирования (Scopus)

## Аннотация

The modification of the production of J/ ψ, ψ(2 S) , and Υ(nS) (n= 1 , 2 , 3) in p+Pb collisions with respect to their production in pp collisions has been studied. The p+Pb and pp datasets used in this paper correspond to integrated luminosities of 28nb-1 and 25pb-1 respectively, collected in 2013 and 2015 by the ATLAS detector at the LHC, both at a centre-of-mass energy per nucleon pair of 5.02 TeV. The quarkonium states are reconstructed in the dimuon decay channel. The yields of J/ ψ and ψ(2 S) are separated into prompt and non-prompt sources. The measured quarkonium differential cross sections are presented as a function of rapidity and transverse momentum, as is the nuclear modification factor, Rp Pb for J/ ψ and Υ(nS). No significant modification of the J/ ψ production is observed while Υ(nS) production is found to be suppressed at low transverse momentum in p+Pb collisions relative to pp collisions. The production of excited charmonium and bottomonium states is found to be suppressed relative to that of the ground states in central p+Pb collisions.

Язык оригинала английский 171 European Physical Journal C 78 3 https://doi.org/10.1140/epjc/s10052-018-5624-4 Опубликовано - 1 мар. 2018

## Предметные области OECD FOS+WOS

• 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ