An updated study of Upsilon production and polarization at the Tevatron and LHC
Feng Y(冯宇); Gong B(龚斌); Wan LP(万露萍); Wang JX(王建雄); Feng; Y; Gong; B; Wan; LP; Wang; JX
刊名CHINESE PHYSICS C
2015
卷号39期号:12页码:123102
关键词non-relativistic quantum chromodynamics next-to-leading order Upsilon chi(bJ) feed-down contributions polarization
学科分类Physics
DOI10.1088/1674-1137/39/12/123102
通讯作者冯宇 ; 龚斌 ; 万露萍 ; 王建雄
文章类型Article
英文摘要Following the nonrelativistic QCD factorization scheme, by taking the latest available measurements of chi(bJ) (3P) into consideration, we present an updated study on the yield and polarization of Upsilon(1S, 2S, 3S) hadroproduction, and the fractions of chi(bJ) (MP) feed-down in Upsilon(nS) production at QCD next-to-leading order. In the fitting, three schemes are applied with different choices of chi(bJ)(mP) feed-down ratios and NRQCD factorization scale. The results can explain the measurements of yield very well. The polarization puzzle to Upsilon(3S) is now solved by considering the chi(bJ)(3P) feed-down contributions. The ratio of sigma[chi(b2)(1P)]/sigma[chi(b1)(1P)] measured by the CMS experiment can also be reproduced in our prediction. Among the different schemes, the results show little difference, but there are sizeable differences for the fitted long-distance color-octet matrix elements. This may bring large uncertainties when the values are applied in theoretical predictions for other experiments such as those at ee, ep colliders.
类目[WOS]Physics, Nuclear ; Physics, Particles & Fields
收录类别SCI ; CA
WOS记录号WOS:000367418600005
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/229050
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_理论物理室
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Feng Y,Gong B,Wan LP,et al. An updated study of Upsilon production and polarization at the Tevatron and LHC[J]. CHINESE PHYSICS C,2015,39(12):123102.
APA 冯宇.,龚斌.,万露萍.,王建雄.,Feng.,...&JX.(2015).An updated study of Upsilon production and polarization at the Tevatron and LHC.CHINESE PHYSICS C,39(12),123102.
MLA 冯宇,et al."An updated study of Upsilon production and polarization at the Tevatron and LHC".CHINESE PHYSICS C 39.12(2015):123102.
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