First search for CP violation in tau lepton decay
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Issue Date
1998-11Author
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Darling, C.
Davis, Robin E. P.
Kotov, S.
Kravchenko, I.
Kwak, Nowhan
Zhou, L.
Publisher
AMERICAN PHYSICAL SOC
Type
Article
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Show full item recordAbstract
We have performed the first search for CP violation in tau lepton decay. CP violation in lepton decay does not occur in the minimal standard model but can occur in extensions such as the multi-Higgs doublet model. It appears as a characteristic difference between the tau(-) and tau(+) decay angular distributions for the semileptonic decay modes such as tau(-) --> K-0 pi(-) nu. We define an observable asymmetry to exploit this and find no evidence for any CP violation. [S0031-9007(98)07548-6].
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Citation
Anderson, S, Kubota, Y, et al. First search for CP violation in tau lepton decay. PHYSICAL REVIEW LETTERS. November 1998. 81(18) : 3823-3827
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