Suppression of gamma(1s), gamma(2s), and gamma(3s) quarkonium states in pbpb collisions at root s-nn=2.76tev
文献类型：期刊论文
| 作者 | Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2017-07-10 |
| 卷号 | 770页码:357-379 |
| 关键词 | Cms Physics Heavy ions Dimuons Bottomonia |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2017.04.031 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | The production yields of gamma(1s), gamma(2s), and gamma(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 2.76tev. the data correspond to integrated luminosities of 166 mu b(-1) and 5.4 pb(-1) for pbpb and pp collisions, respectively. differential production cross sections are reported as functions of gamma rapidity y up to 2.4, and transverse momentum pt up to 20 gev/c. a strong centrality-dependent suppression is observed in pbpb relative to pp collisions, by factors of up to approximate to 2 and 8, for the gamma(1s) and gamma(2s) states, respectively. no significant dependence of this suppression is observed as a function of y or pt. the gamma(3s) state is not observed in pbpb collisions, which corresponds to a suppression for the centrality-integrated data by at least a factor of approximate to 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. (c) 2017 the author(s). published by elsevier b.v. |
| WOS关键词 | HEAVY-ION COLLISIONS ; CHARMONIUM SUPPRESSION ; NUCLEUS COLLISIONS ; PSI-SUPPRESSION ; PROTON ; LHC |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000404196500050 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177297 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Khachatryan, V. |
| 作者单位 | 1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Inst Nucl Problems, Minsk, Byelarus 4.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 5.Univ Antwerp, Antwerp, Belgium 6.Vrije Univ Brussel, Brussels, Belgium 7.Univ Libre Bruxelles, Brussels, Belgium 8.Univ Ghent, Ghent, Belgium 9.Catholic Univ Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium |
| 推荐引用方式 GB/T 7714 | Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Suppression of gamma(1s), gamma(2s), and gamma(3s) quarkonium states in pbpb collisions at root s-nn=2.76tev[J]. Physics letters b,2017,770:357-379. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Carrillo Moreno, S..(2017).Suppression of gamma(1s), gamma(2s), and gamma(3s) quarkonium states in pbpb collisions at root s-nn=2.76tev.Physics letters b,770,357-379. |
| MLA | Khachatryan, V.,et al."Suppression of gamma(1s), gamma(2s), and gamma(3s) quarkonium states in pbpb collisions at root s-nn=2.76tev".Physics letters b 770(2017):357-379. |
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