Suppression of excited gamma states relative to the ground state in pb-pb collisions at root s(nn)=5.02 tev
文献类型：期刊论文
| 作者 | 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; Flechl, M.2 |
| 刊名 | Physical review letters
 |
| 出版日期 | 2018-04-02 |
| 卷号 | 120期号:14页码:17 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.120.142301 |
| 通讯作者 | Sirunyan, a. m.() |
| 英文摘要 | The relative yields of gamma mesons produced in pp and pb-pb collisions at root s(nn) = 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, gamma(2s) and gamma(3s), to the ground state, gamma(1s), in both pb-pb and pp collisions at the same center-of-mass energy. the double ratios, [gamma(ns)/gamma(1s)](pb-pb)/[gamma(ns)/gamma(1s)](pp), are measured to be 0.308 +/- 0.055(stat) +/- 0.019(syst) for the gamma(2s) and less than 0.26 at 95% confidence level for the gamma(3s). no significant gamma(3s) signal is found in the pb-pb data. the double ratios are studied as a function of collision centrality, as well as gamma transverse momentum and rapidity. no significant dependencies are observed. |
| WOS关键词 | RAPIDITY ; MODEL |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000428966400003 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178174 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Sirunyan, A. M. |
| 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, Belgium 10.Univ Mons, Mons, Belgium |
| 推荐引用方式 GB/T 7714 | Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Suppression of excited gamma states relative to the ground state in pb-pb collisions at root s(nn)=5.02 tev[J]. Physical review letters,2018,120(14):17. |
| APA | Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Butler, P. H..(2018).Suppression of excited gamma states relative to the ground state in pb-pb collisions at root s(nn)=5.02 tev.Physical review letters,120(14),17. |
| MLA | Sirunyan, A. M.,et al."Suppression of excited gamma states relative to the ground state in pb-pb collisions at root s(nn)=5.02 tev".Physical review letters 120.14(2018):17. |
入库方式： iSwitch采集
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。