New-Physics Effects on Triple-Product Correlations in Lambda_b Decays

We adopt an effective-lagrangian approach to compute the new-physics contributions to T-violating triple-product correlations in charmless Lambda_b decays. We use factorization and work to leading order in the heavy-quark expansion. We find that the standard-model (SM) predictions for such correlati...

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Bibliographic Details
Published inarXiv.org
Main Authors Bensalem, Wafia, Datta, Alakabha, London, David
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.09.2002
Subjects
Correlation
Decay
Operators
Physics
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Summary:We adopt an effective-lagrangian approach to compute the new-physics contributions to T-violating triple-product correlations in charmless Lambda_b decays. We use factorization and work to leading order in the heavy-quark expansion. We find that the standard-model (SM) predictions for such correlations can be significantly modified. For example, triple products which are expected to vanish in the SM can be enormous (~50%) in the presence of new physics. By measuring triple products in a variety of Lambda_b decays, one can diagnose which new-physics operators are or are not present. Our general results can be applied to any specific model of new physics by simply calculating which operators appear in that model.
ISSN:2331-8422
DOI:10.48550/arxiv.0208054