Asymmetry observables and the origin of R D ( * ) anomalies

Asadi, Pouya; Buckley, Matthew R.; Shih, David

doi:10.1103/PhysRevD.99.035015

Title: Asymmetry observables and the origin of $R_{D^{(*)}}$ anomalies

Journal Article · Tue Feb 12 00:00:00 EST 2019 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.99.035015· OSTI ID:1494381

Asadi, Pouya; Buckley, Matthew R.; Shih, David

The R_D(*) anomalies are among the longest-standing and most statistically significant hints of physics beyond the standard model. Many models have been proposed to explain these anomalies, including the interesting possibility that right-handed neutrinos could be involved in the B decays. In this paper, we investigate future measurements at Belle II that can be used to tell apart the various new physics scenarios. Focusing on a number of τ asymmetry observables (forward-backward asymmetry and polarization asymmetries) which can be reconstructed at Belle II, we calculate the contribution of the most general dimension 6 effective Hamiltonian (including right-handed neutrinos) to all of these asymmetries. We show that Belle II can use these asymmetries to distinguish between new-physics scenarios that use right- and left-handed neutrinos, and in most cases can likely distinguish the specific model itself.

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Research Organization:: Rutgers Univ., Piscataway, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: DOE-SC0010008; SC0017811; SC0010008

OSTI ID:: 1494381

Alternate ID(s):: OSTI ID: 1611325

Journal Information:: Physical Review D, Journal Name: Physical Review D Vol. 99 Journal Issue: 3; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 21 works

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Title: Asymmetry observables and the origin of R D ( * ) anomalies

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Title: Asymmetry observables and the origin of $R_{D^{(*)}}$ anomalies