Upsilon production cross section in pp collisions at root s=7 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011 |
| 卷号 | 83期号:11 |
| 关键词 | QED RADIATIVE-CORRECTIONS UNIVERSAL MONTE-CARLO QUARKONIUM PHOTOS |
| 通讯作者 | Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | The Y(1S), Y(2S), and Y(3S) production cross sections in proton-proton collisions at root s = 7 TeV are measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1 +/- 0.3 pb(-1). Integrated over the rapidity range vertical bar y vertical bar < 2, we find the product of the Y(1S) production cross section and branching fraction to dimuons to be sigma(pp -> Y(1S)X) center dot B(Y(1S) -> mu(+)mu(-)) = 7.37 +/- 0.13(-0.42)(+0.61) +/- 0.81 nb, where the first uncertainty is statistical, the second is systematic, and the third is associated with the estimation of the integrated luminosity of the data sample. This cross section is obtained assuming unpolarized Y(1S) production. With the assumption of fully transverse or fully longitudinal production polarization, the measured cross section changes by about 20%. We also report the measurement of the Y(1S), Y(2S), and Y(3S) differential cross sections as a function of transverse momentum and rapidity. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291658800001 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213062]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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. Upsilon production cross section in pp collisions at root s=7 TeV[J]. PHYSICAL REVIEW D,2011,83(11). |
| APA | CMS Collaboration.(2011).Upsilon production cross section in pp collisions at root s=7 TeV.PHYSICAL REVIEW D,83(11). |
| MLA | CMS Collaboration."Upsilon production cross section in pp collisions at root s=7 TeV".PHYSICAL REVIEW D 83.11(2011). |
入库方式： OAI收割
来源：高能物理研究所
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