Bd->K*MuMu as a lab for discovering new physics at LHCb

TL;DR

This paper discusses how the decay process Bd->K*MuMu at LHCb can serve as a laboratory for discovering new physics, emphasizing the theoretical understanding and potential measurements with early LHC data.

Contribution

It introduces a framework for analyzing Bd->K*MuMu decays to identify new physics, highlighting the use of Operator Product Expansion and optimized observables.

Findings

The decay kinematics are well understood in the Standard Model and new physics scenarios.

A set of observables minimizes QCD-related theoretical errors.

Potential measurements with early LHCb data are outlined.

Abstract

The analysis of the penguin decay Bd->K*MuMu at LHCb can act as a laboratory for the discovery and understanding of new physics. Through the Operator Product Expansion, the decay kinematics are well understood in both the Standard Model and in a large range of new physics scenarios. The theoretical errors from QCD effects can be characterized and a set of observables have been derived which minimise their influence in measurements. We will describe how these measurements can be made in LHCb with special emphasis on what can be done with a first run of the LHC with a few hundred pb-1 of integrated luminosity.