Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2022 |
| 卷号 | 835页码:137397 |
| 关键词 | p nucleus: interaction lead nucleus: mass number suppression Upsilon(9460): leptonic decay Upsilon(10020): leptonic decay Upsilon(10355): leptonic decay muon: pair production initial state excited state nuclear matter: effect channel cross section: branching ratio: measured transverse momentum dependence rapidity dependence CMS CERN LHC Coll experimental results 5020 GeV-cms/nucleon |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2022.137397 |
| 文献子类 | Article |
| 英文摘要 | Production cross sections of $\Upsilon$(1S), $\Upsilon$(2S), and $\Upsilon$(3S) states decaying into \muplusmuminus in proton-lead (pPb) collisions are reported using data collected by the CMS experiment at$\sqrt{s_\mathrm{NN}}$ = 5.02 TeV. A comparison is made with corresponding cross sections obtained with pp data measured at the same collision energy and scaled by the Pb nucleus mass number. The nuclear modification factor for $\Upsilon$(1S) is found to be $R_\mathrm{pPb}(\Upsilon(1S))$ = 0.806 $\pm$ 0.024 (stat) $\pm$ 0.059 (syst). Similar results for the excited states indicate a sequential suppression pattern, such that $R_\mathrm{pPb}(\Upsilon(1S)) \gt R_\mathrm{pPb}(\Upsilon(2S)) \gt R_\mathrm{pPb}(\Upsilon(3S))$. The suppression is much less pronounced in pPb than in PbPb collisions, and independent of transverse momentum $p_\mathrm{T}^\Upsilon$ and center-of-mass rapidity $y_\mathrm{CM}^\Upsilon$ of the individual $\Upsilon$ state in the studied range $p_\mathrm{T}^\Upsilon \lt $ 30 GeV$/c$ and $\vert y_\mathrm{CM}^\Upsilon\vert \lt$ 1.93. Models that incorporate sequential suppression of bottomonia in pPb collisions are in better agreement with the data than those which only assume initial-state modifications. |
| 电子版国际标准刊号 | 1873-2445 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/298945]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | CMS Collaboration. Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV[J]. PHYSICS LETTERS B,2022,835:137397. |
| APA | CMS Collaboration.(2022).Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV.PHYSICS LETTERS B,835,137397. |
| MLA | CMS Collaboration."Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV".PHYSICS LETTERS B 835(2022):137397. |
入库方式： OAI收割
来源：高能物理研究所
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