New observables in the decay mode anti-B --> anti-K*0 l+ l-

TL;DR

This paper analyzes a wide range of angular observables in the decay anti-B --> anti-K*0 l+ l-, providing a detailed NLO theoretical framework and assessing their potential to reveal new physics at LHCb and Super-LHCb.

Contribution

It offers the first comprehensive NLO analysis of all angular observables in this decay mode, including estimates of mbda/m_b corrections and experimental sensitivity studies.

Findings

Certain observables are highly sensitive to new physics effects.

The transversity amplitude A_T^(1) cannot be measured at current or future experiments.

The analysis demonstrates the potential of angular observables to probe right-handed currents.

Abstract

We discuss the large set of observables available from the angular distributions of the decay anti-B --> anti-K*0 l+ l-. We present a NLO analysis of all observables based on the QCD factorization approach in the low-dilepton mass region and an estimate of \Lambda/m_b corrections. Moreover, we discuss their sensitivity to new physics. We explore the experimental sensitivities at LHCb (10 fb^-1) and Super-LHCb (100 fb^-1) based on a full-angular fit method and explore the sensitivity to right handed currents. We also show that the previously discussed transversity amplitude A_T^(1) cannot be measured at the LHCb experiment or at future B factory experiments as it requires a measurement of the spin of the final state particles.