Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7683
Title: Suppression of excited states relative to the ground state in Pb-Pb collisions at s NN = 5.02 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Nitrogen compounds
Transverse momenta
Binary alloys
Excited states
Decay channels
Publisher: American Physical Society
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Suppression of excited Υ states relative to the ground state in Pb-Pb collisions at √s NN = 5.02 TeV. Physical Review Letters, 120(14). doi:10.1103/PhysRevLett.120.142301
Abstract: The relative yields of mesons produced in pp and Pb-Pb collisions at sNN=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, (2S) and (3S), to the ground state, (1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [(nS)/(1S)]Pb-Pb/[(nS)/(1S)]pp, are measured to be 0.308±0.055(stat)±0.019(syst) for the (2S) and less than 0.26 at 95% confidence level for the (3S). No significant (3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as transverse momentum and rapidity. No significant dependencies are observed.
URI: https://doi.org/10.1103/PhysRevLett.120.142301
https://hdl.handle.net/11147/7683
ISSN: 0031-9007
0031-9007
1079-7114
Appears in Collections:Mathematics / Matematik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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