Upsilon Production in Pb-Pb and p-Pb Collisions at Forward Rapidity with ALICE at the LHC

14th International Conference on Strangeness in Quark Matter

Khan, Palash^1

Saha Institute of Nuclear Physics, Kolkata, India^1

关键词: Forward rapidity;    Heavy ion collision;    Muon spectrometer;    Nuclear modification factors;    Pb-Pb collisions;    Quark-gluon plasma;    Scattering process;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012112/pdf
DOI  :  10.1088/1742-6596/509/1/012112

来源: IOP

【 摘 要 】

The ALICE apparatus at the LHC was designed and built to perform dedicated studies of the Quark-Gluon Plasma (QGP), a strongly interacting phase of QCD matter, expected to be created in heavy-ion collisions, where quarks and gluons are deconfined. In such collisions heavy flavors are produced at the very early stage of the interaction by the initial hard scattering processes and hence can be used to characterize the hot and dense medium. In particular the sequential suppression of quarkonia (charmonia and bottomonia) was proposed as a thermometer of the deconfined medium. The inclusive Υ(1S) production has been measured down to zero transverse momentum in its dimuon decay channel at forward rapidity (2.5 labAA) in Pb-Pb collisions at 2.76 TeV are discussed and compared to the measurement at mid-rapidity by the CMS Collaboration and to theoretical predictions. Also recent results on RpPband forward-to-backward yield ratio (RfB) in p-Pb collisions at = 5.02 TeV are discussed.