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Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector
CMS Collaboration
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号8
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要An inclusive search for same-sign top-quark pair production in pp collisions at root s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb(-1). This analysis is motivated by recent studies of p (p) over bar -> t (t) over bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t -channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.
学科领域Physics
DOI10.1007/JHEP08(2011)005
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000294901400077
引用统计
被引频次:31[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/311005/213112
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
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CMS Collaboration. Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(8).
APA CMS Collaboration.(2011).Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector.JOURNAL OF HIGH ENERGY PHYSICS(8).
MLA CMS Collaboration."Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector".JOURNAL OF HIGH ENERGY PHYSICS .8(2011).
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