B-meson charged current anomalies: The post-Moriond 2019 status

Bardhan, Debjyoti (Department of Physics, Ben-Gurion University, Beer-Sheva 8410501, Israel) ; Ghosh, Diptimoy (Department of Physics, Indian Institute of Science Education and Research, Pune 411008, India)

10 July 2019

Abstract: In this paper, we discuss the impact of the recent Belle result on the various theoretical explanations of the RD and RD* anomalies. The pure tensor explanation, which was strongly disfavored by the measurements of FLD* and high-pT ppτν searches before Moriond, is now completely allowed because of the reduction of the experimental world average. Moreover, the pure right-chiral vector solution (involving right-chiral neutrinos) has now moved into the 2σ allowed range of the LHC ppτν searches. We also critically reexamine the bound on B(Bcτν¯τ) from large electron-positron collider data and show that the bound is considerably weaker than the number 10% often used in the recent literature.


Published in: Physical Review D 100 (2019)
Published by: APS
DOI: 10.1103/PhysRevD.100.011701
License: CC-BY-4.0



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