Spin correlations and new physics in τ -lepton decays at the LHC

被引：0
作者：
Alper Hayreter
German Valencia
机构：
[1] Ozyegin University,Department of Natural and Mathematical Sciences
[2] Iowa State University,Department of Physics
来源：
Journal of High Energy Physics | / 2015卷
关键词：
Beyond Standard Model; CP violation; Effective field theories;
D O I：
暂无
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学科分类号：
摘要：
We use spin correlations to constrain anomalous τ -lepton couplings at the LHC including its anomalous magnetic moment, electric dipole moment and weak dipole moments. Single spin correlations are ideal to probe interference terms between the SM and new dipole-type couplings as they are not suppressed by the τ -lepton mass. Double spin asymmetries give rise to T -odd correlations useful to probe CP violation purely within the new physics amplitudes, as their appearance from interference with the SM is suppressed by mτ . We compare our constraints to those obtained earlier on the basis of deviations from the Drell-Yan cross-section.
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