Bottomonium production in p+p and Pb+Pb collisions with ATLAS

4 Nov 2019, 17:40
20m
Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Poster Presentation Heavy flavor and quarkonium Poster Session

Speaker

Songkyo Lee (Iowa State University (US))

Description

Bottomonium, a bound state of a bottom quark and its antiquark, is an excellent probe of the hot and dense medium created in heavy-ion collisions at LHC. The ATLAS collaboration collected the large datasets of $pp$ and Pb+Pb collisions in 2017 and 2018 corresponding to integrated luminosities of 242 pb$^{-1}$ and 1.39 nb$^{-1}$ respectively, at a centre-of-mass energy per nucleon pair of 5.02 TeV. In this poster, bottomonium states are reconstructed via the dimuon decay channel in the rapidity range of $|y| < 1$, and their production in PbPb collisions is compared to that in pp collisions to extract the nuclear modification factor, $R_{AA}$, as a function of event centrality and transverse momentum. In addition, the relative suppression of the excited states Y(nS) to the ground state Y(1S) is studied.

Primary author

Songkyo Lee (Iowa State University (US))

Presentation Materials