期刊
PHYSICAL REVIEW D
卷 88, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.094012
关键词
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资金
- Japan Society for the Promotion of Science [20244037, 2540027, 2402804, 248920]
- Grants-in-Aid for Scientific Research [12F02804, 20244037] Funding Source: KAKEN
We study potential new physics effects in the (B) over barB -> D tau nu decays. As a particular example of new physics models, we consider the class of leptoquark models and put the constraints on the leptoquark couplings using the recently measured ratios R(D) = B (B) over bar -> D tau nu)/B((B) over bar -> D mu nu). For consistency, some of the constraints are compared with the ones coming from the current experimental bound on B(B -> X-s nu nu). In order to discriminate various new physics scenarios, we examine the correlations between different observables that can be measured in the future.
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