Exclusive $B \to VV $ Decays and CP Violation in the General two-Higgs-doublet Model

TL;DR

This paper investigates charmless $B o VV$ decays within a general two-Higgs-doublet model, focusing on CP violation effects, and finds significant potential for new physics signals in CP asymmetries despite small effects on branching ratios.

Contribution

It provides a detailed analysis of $B o VV$ decays in the general two-Higgs-doublet model, highlighting the model's impact on CP asymmetries and potential for new physics detection.

Findings

Small contributions to branching ratios and polarization fractions.

Significant effects on CP asymmetries, especially in penguin-dominated modes.

Potential signals for new physics in future B-physics experiments.

Abstract

Using the general factorization approach, we present a detailed investigation for the branching ratios, CP asymmetries and longitudinal polarization fractions in all charmless hadronic $B \to VV$ decays (except for the pure annihilation processes) within the most general two-Higgs-doublet model with spontaneous CP violation. It is seen that such a new physics model only has very small contributions to the branching ratios and longitudinal polarization fractions. However, as the model has rich CP-violating sources, it can lead to significant effects on the CP asymmetries, especially on those of penguin-dominated decay modes, which provides good signals for probing new physics beyond the SM in the future B-physics experiments.