J/psi and psi(2S) production in pp collisions at root s=7 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 2 |
| 关键词 | QED RADIATIVE-CORRECTIONS UNIVERSAL MONTE-CARLO DECAYS PROMPT PHOTOS |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | A measurement of the J/psi and psi(2S) production cross sections in pp collisions at root s = 7 TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb(-1). Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B -> psi(2S)X decay is extracted from the ratio of the non-prompt cross sections to be: beta(B -> psi(2S)X) = (3.08 +/- 0.12 (stat.+ syst.) +/- 0.13 (theor.) +/- 0.42 (beta(PDG))) x 10(-3) |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000301451200011 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213194]  |
| 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. J/psi and psi(2S) production in pp collisions at root s=7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(2). |
| APA | CMS Collaboration.(2012).J/psi and psi(2S) production in pp collisions at root s=7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(2). |
| MLA | CMS Collaboration."J/psi and psi(2S) production in pp collisions at root s=7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .2(2012). |
入库方式： OAI收割
来源：高能物理研究所
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