The $\bar{B}_d \to \bar{K}^{*0} \mu^+ \mu^-$ decay

TL;DR

This paper explores the potential for discovering new physics through the decay process ar;B_d ar;K^{*0} mm;+ mm;-, focusing on constructing robust observables that minimize QCD uncertainties and reveal angular distribution symmetries.

Contribution

It introduces new observables for the decay that are insensitive to QCD form factor uncertainties and sensitive to potential new physics effects, including CP violation.

Findings

Identifies observables protected from QCD uncertainties.

Analyzes sensitivity to new physics and CP-violating phases.

Provides strategies for experimental measurements.

Abstract

In this paper the potential for the discovery of new physics in the exclusive decay $\bar{B}_d \to \bar{K}^{*0} \mu^+ \mu^-$ is discussed. Attention is paid to constructing observables which are protected from uncertainties in QCD form factors and at the same time observe the symmetries of the angular distribution. We discuss the sensitivity to new physics in the observables including the effect of CP-violating phases.