期刊
PHYSICAL REVIEW D
卷 89, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.89.114009
关键词
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资金
- MICINN [FPA2010-17915]
- Junta de Andalucia [FQM 101, FQM 03048, FQM 6552]
- FCT [EXPL/FIS-NUC/0460/2013, SFRH/BD/73438/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/73438/2010] Funding Source: FCT
We define three orthogonal axes to investigate the top-quark polarization in the t-channel single-top process. We provide expressions for the polarization in these axes in terms of anomalous Wtb couplings. It is found that the polarizations in the two axes orthogonal to the spectator quark axis are very sensitive to an anomalous coupling involving a (b) over bar (L)sigma(mu nu)t(R) dipole term. In particular, an asymmetry based on the polarization normal to the production plane is more sensitive to the imaginary part of this coupling than previously studied observables.
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