Suppression of Υ (1S), Υ (2S) and Υ (3S) production in PbPb collisions at√
Yazarlar (20)
Jennifer Ngadiuba
Deborah Pinna
Giorgia Rauco
Peter Robmann
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Korbinian Schweiger
Claudia Seitz
Yuta Takahashi
Alberto Zucchetta Sinop Üniversitesi
CMS Collaboration
Florencia Canelli
Benjamin Kilminster
Thea Aarestad
Lea Caminada
Annapaoloa De Cosa
Riccardo Del Burgo
Silvio Donato
Camilla Galloni
Andreas Hinzmann
Tomas Hreus
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Physics Letters B (Q1) | ||
| Makale Dili | – | Basım Tarihi | 01-2017 |
| Cilt / Sayı / Sayfa | 770 / 0 / 357–379 | DOI | – |
| Makale Linki | https://scholar.google.com/scholar?cluster=10037019969376538078&hl=en&oi=scholarr | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| The production yields of (1S),(2S), and (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 166b1 and 5. 4pb1 for PbPb and pp collisions, respectively. Differential production cross sections are reported as functions of 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 (1S) and (2S) states, respectively. No significant dependence of this suppression is observed as a function of y or pT. The (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 in agreement with theoretical scenarios modeling the sequential melting of quarkonium states in a quark gluon plasma. |
| Anahtar Kelimeler |
