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Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios
DØ Collaboration
2007
发表期刊PHYSICAL REVIEW LETTERS
卷号98期号:4页码:41801
通讯作者Abazov, VM (reprint author), Univ Buenos Aires, Buenos Aires, DF, Argentina.
摘要We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (t (t) over bar) produced in p (p) over bar collisions at root s =1.96 TeV by the Fermilab Tevatron Collider. We use 370 pb(-1) of data collected by the D0 experiment and select events with at least one high transverse momentum electron or muon, high transverse energy imbalance, and four or more jets. We discriminate between b- and (b) over bar -quark jets by using the charge and momenta of tracks within the jet cones. The data are consistent with the expected electric charge, |q|=2e/3. We exclude, at the 92% C.L., that the sample is solely due to the production of exotic quark pairs Q (Q) over bar with |q|=4e/3. We place an upper limit on the fraction of Q (Q) over bar pairs rho < 0.80 at the 90% C.L.
文章类型Article
学科领域Physics
DOI10.1103/PhysRevLett.98.041801
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000243789700012
引用统计
被引频次:34[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/311005/227896
专题实验物理中心
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DØ Collaboration. Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios[J]. PHYSICAL REVIEW LETTERS,2007,98(4):41801.
APA DØ Collaboration.(2007).Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios.PHYSICAL REVIEW LETTERS,98(4),41801.
MLA DØ Collaboration."Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios".PHYSICAL REVIEW LETTERS 98.4(2007):41801.
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