期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.211804
关键词
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资金
- MICINN [FPA2006-05294, FPA2010-17915]
- Junta de Andalucia [FQM 101, FQM 03048, FQM 6552]
- ICREA Funding Source: Custom
We introduce the forward-backward asymmetries A(u), A(d) corresponding to u (u) over bar, d (d) over bar -> t (t) over bar production, respectively, at hadron colliders. These are collider and center-of-mass independent observables, directly related to the forward-backward and charge asymmetries measured at the Tevatron and the LHC, respectively. We discuss how to extract these asymmetries from data. Because these asymmetries are collider independent, their measurement at these two colliders could elucidate the nature of the anomalous forward-backward asymmetry measured at the Tevatron. Our framework also shows in a model independent fashion that a positive Tevatron asymmetry exceeding the standard model expectation is compatible with the small asymmetry measured at the LHC.
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