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 1079-7114 0031-9007 |
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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PhysRevLett.120.142301.pdf | Makale (Article) | 506.88 kB | Adobe PDF | ![]() View/Open |
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