Search for New Physics in rare decays at LHCb

TL;DR

This paper reviews the latest results from LHCb on rare heavy flavor decays, testing the Standard Model and searching for new physics through precise measurements and upper limits on rare decay processes.

Contribution

It presents the most recent measurements and upper limits on rare B meson decays, highlighting the experimental progress in probing new physics scenarios.

Findings

Most precise measurements of dtokstmm angular structure

Stringent upper limit on smmb decay branching fraction

Searches for lepton number and flavor violation

Abstract

Rare heavy flavor decays provide stringent tests of the Standard Model of particle physics and allow to test for possible new Physics scenarios. The LHCb experiment at CERN is the ideal place for these searches as it has recorded the worlds largest sample of beauty mesons. The status of the rare decay analyses with 1\invfb of $\sqrt s = 7\tev $ of $pp$--collisions collected by the LHCb experiment in 2011 is reviewed. The worlds most precise measurements of the angular structure of \BdToKstmm decays is discussed, as well as the isospin asymmetry measurement in $\decay{B}{\kaon^{(*)} \mup\mun}$ decays. The most stringent upper exclusion limit on the branching fraction of \Bsmm decays is shown, as well as searches for lepton number and lepton flavor violating processes.