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Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at root s=7 TeV
CMS Collaboration
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号3
通讯作者Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要A measurement of the angular correlations between beauty and anti-beauty hadrons (B (B) over bar) produced in pp collisions at a centre-of-mass energy of 7 TeV at the CERN LHC is presented, probing for the first time the region of small angular separation. The B hadrons are identified by the presence of displaced secondary vertices from their decays. The B hadron angular separation is reconstructed from the decay vertices and the primary-interaction vertex. The differential B (B) over bar production cross section, measured from a data sample collected by CMS and corresponding to an integrated luminosity of 3.1 pb(-1), shows that a sizable fraction of the B (B) over bar pairs are produced with small opening angles. These studies provide a test of QCD and further insight into the dynamics of b (b) over bar production.
关键词CARLO GENERATOR CASCADE CCFM
学科领域Physics
DOI10.1007/JHEP03(2011)136
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000289295300064
引用统计
被引频次:13[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/311005/213036
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
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CMS Collaboration. Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at root s=7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(3).
APA CMS Collaboration.(2011).Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at root s=7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(3).
MLA CMS Collaboration."Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at root s=7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .3(2011).
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