Anomalies in Hadronic B → VV Decays

@misc{bhattacharya2026anomalies,
  title = {{Anomalies in Hadronic $B \to VV$ Decays}},
  author = {Bhubanjyoti Bhattacharya and Marianne Bouchard and Alexandre Jean and David London and Ipsita Ray},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2607.27202},
  eprint = {2607.27202},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.27202},
}

TY  - UNPB
TI  - Anomalies in Hadronic B → VV Decays
AU  - Bhubanjyoti Bhattacharya
AU  - Marianne Bouchard
AU  - Alexandre Jean
AU  - David London
AU  - Ipsita Ray
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2607.27202
UR  - https://arxiv.org/abs/2607.27202
AB  - Recently, a fit of charmless B→ PP decays (B ∈ {B^0, B^+, B_s^0}, P ∈ { π, K, η, η' }) to the latest data was performed under the assumption of flavour 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 [SM_SU(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 SM_SU(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.
ER  -