Search for rare purely leptonic decays at LHCb

TL;DR

This paper reviews LHCb's search for rare leptonic decays of B, D, and K mesons, which are sensitive indicators of potential new physics beyond the Standard Model.

Contribution

It presents the status of analyses using approximately 1 fb$^{-1}$ of data collected at 7 TeV, highlighting LHCb's capabilities in these searches.

Findings

No significant excess observed in $B^0_{(s)} \to \mu^+ \mu^-$ decays

LHCb's detector performance enables precise measurements of rare decay processes

Constraints on new physics models derived from decay search results

Abstract

Rare lepton decays of the B(s), D and K mesons are sensitive probes of New Physics. In particular, the search for the decays $B^0_(s) -> \mu^+ \mu^-$ provides information on the presence of new (pseudo-)scalar particles. LHCb is well suited for these analyses due to its large acceptance and trigger efficiency, as well as its excellent invariant mass resolution and lepton identification capabilities. The status of these analyses with $\sim1$ fb$^{-1}$ of pp collisions collected by LHCb in 2011 at $\sqrt{s}=7$ TeV is reviewed.