Suppression of and production in PbPb collisions at = 2.76 TeV
Yazarlar (10)
Vardan Khachatryan
Albert M Sirunyan
Armen Tumasyan
Wolfgang Adam
Ece Aşılar
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Johannes Brandstetter
Erica Brondolin
Marko Dragicevic
Janos Erö
Sinop Üniversitesi
Sinop Üniversitesi
| Makale Türü |
Özgün Makale
(Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
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| Dergi Adı | Phys. Lett. B | ||
| Makale Dili | – | Basım Tarihi | 01-2017 |
| Cilt / Sayı / Sayfa | 770 / 0 / 357–379 | DOI | – |
| Makale Linki | https://inspirehep.net/legacy/arxiv/1611.01510 | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| The production yields of ϒ(1S), ϒ(2S), and ϒ(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76 TeV. The data correspond to integrated luminosities of 166μb−1 and 5.4pb−1 for PbPb and pp collisions, respectively. Differential production cross sections are reported as functions of ϒ rapidity y up to 2.4, and transverse momentum pT up to 20GeV/c . A strong centrality-dependent suppression is observed in PbPb relative to pp collisions, by factors of up to ≈2 and 8, for the ϒ(1S) and ϒ(2S) states, respectively. No significant dependence of this suppression is observed as a function of y or pT . The ϒ(3S) state is not observed in PbPb collisions, which corresponds to a suppression for the centrality-integrated data by at least a factor of ≈7 at a 95% confidence level. The observed suppression is … |
| Anahtar Kelimeler |
