Polarization Studies: testing explanations of the B -> phi K* puzzle and B -> V T decays

TL;DR

This paper investigates polarization puzzles in B meson decays, testing standard model explanations like penguin annihilation and rescattering across different decay modes to understand their validity.

Contribution

It provides a comparative analysis of penguin annihilation and rescattering explanations for polarization ratios in B decays, including predictions for b -> d and B -> V T processes.

Findings

Penguin annihilation and rescattering can explain polarization ratios in some decays.

Predictions for polarization observables in B -> V T decays are provided.

The study assesses the viability of SM explanations against experimental data.

Abstract

It has been observed in B->phiK* and B^{0(+)}->rho^{0(+)}K^{*0} that the fraction of transverse decays, fT, and the fraction of longitudinal decays, fL, are roughly equal, in opposition to the naive expectation, fT/fL << 1. If one requires a single explanation of all polarization puzzles, two possibilities remain within the standard model (SM): penguin annihilation and rescattering. We examine the predictions of these two explanations for fT/fL in b -> d decays. We also study polarization observables in B -> V T decays (V is a vector and T is a tensor meson) to probe whether the two SM explanations account for the fT/fL ratio in this type of decays and to further investigate the two new-physics scenarios which explain the data in B -> pi K and the phi(rho) K* polarization measurements.