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Anomalies in hadronic B→VV decays

Bhubanjyoti Bhattacharya1,*, Marianne Bouchard2,†, Alexandre Jean3,‡, David London2,§, and Ipsita Ray2,∥

  • *Contact author: bbhattach@ltu.edu
  • †Contact author: marianne.bouchard.5@umontreal.ca
  • ‡Contact author: alexandre.jean@durham.ac.uk
  • §Contact author: london@lps.umontreal.ca
  • ∥Contact author: ipsitaray02@gmail.com
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Phys. Rev. D 114, 073008 – Published 29 October, 2026

DOI: https://doi.org/10.1103/sj66-kh1t

Abstract

Recently, a fit of charmless B→PP decays (B∈{B0,B+,Bs0}, P∈{π,K,η,η′}) to the latest data was performed under the assumption of flavor SU(3) symmetry [SU(3)F]. It was found that there is a 4.1σ disagreement with the SU(3)F limit of the Standard Model [SMSU(3)F]. In this paper, we extend this analysis to charmless B→VV decays (V∈{ρ,K*,ϕ,ω}). The fit examining B→ρK* decays, assuming only isospin symmetry, is found to be acceptable. When we fit to B→VV decays with V∈{ρ,K*} within SU(3)F, we find a 5.2σ discrepancy with SMSU(3)F. Finally, when B→VV decays with V∈{ρ,K*,ϕ,ω} are considered, the discrepancy grows to >7σ. The theoretical input in this analysis is modest, so our results are quite rigorous, group theoretically, and hold almost exactly in the SU(3)F limit. Although it seems unlikely that the introduction of ∼30% SU(3)F-breaking effects can account for this discrepancy, this must be verified.

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Phys. Rev. D 114, 073008– Published 29 October, 2026
  • Received 4 August 2026
  • Accepted 25 September 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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