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Solutions to RD-RD⁎ in light of Belle 2019 data
, D. Kumar, S. Kumbhakar, S.U. Sankar
Published in Elsevier B.V.
2020
Volume: 953
   
Abstract
Earlier this year, the Belle collaboration presented their new measurements of RD and RD⁎ using a new method. These measurements are consistent with the Standard Model predictions, whereas the global averages of the earlier measurements had a 4.1σ discrepancy. With the inclusion of the new data in the global averages, the discrepancy comes down to 3.1σ. In this work, we study the new physics solutions to the RD-RD⁎ anomaly allowed by the reduction in the discrepancy. Among the four fermion operators, which arise through a single particle exchange, only the (V−A) operator solution survives. We found three additional solutions with two dis-similar operators. The branching ratio of Bc→τν¯ is powerful discriminant between these four allowed solutions. © 2020 The Authors
About the journal
JournalData powered by TypesetNuclear Physics B
PublisherData powered by TypesetElsevier B.V.
ISSN05503213
Open AccessNo