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	Probing the top-quark width using the charge identification of b jets
	Giardino, Pier Paolo1; Zhang, Cen1,2
刊名	Physical review d
	2017-07-18
卷号	96期号:1页码:6
ISSN号	2470-0010
DOI	10.1103/physrevd.96.011901
通讯作者	Giardino, pier paolo(pgiardino@bnl.gov)
英文摘要	We propose a new method for measuring the top-quark width based on the on-/off-shell ratio of b-charge asymmetry in pp -> wbj production at the lhc. the charge asymmetry removes virtually all backgrounds and related uncertainties, while remaining systematic and theoretical uncertainties can be taken under control by the ratio of cross sections. limited only by statistical error, in an optimistic scenario, we find that our approach leads to good precision at high integrated luminosity, at a few hundred mev assuming 300-3000 fb(-1) at the lhc. the approach directly probes the total width, in such a way that model-dependence can be minimized. it is complementary to existing cross section measurements which always leave a degeneracy between the total rate and the branching ratio, and provides valuable information about the properties of the top quark. the proposal opens up new opportunities for precision top measurements using a b-charge identification algorithm.
WOS关键词	THRESHOLD
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000405711600001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177240
专题	高能物理研究所
通讯作者	Giardino, Pier Paolo
作者单位	1.Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Giardino, Pier Paolo,Zhang, Cen. Probing the top-quark width using the charge identification of b jets[J]. Physical review d,2017,96(1):6.
APA	Giardino, Pier Paolo,&Zhang, Cen.(2017).Probing the top-quark width using the charge identification of b jets.Physical review d,96(1),6.
MLA	Giardino, Pier Paolo,et al."Probing the top-quark width using the charge identification of b jets".Physical review d 96.1(2017):6.

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