Measuring the angle $\gamma$ from penguin decays at LHCb

TL;DR

This paper reports the first LHCb measurements of specific charmless B meson decays, which are useful for determining the CKM angle gamma and probing potential New Physics in penguin loops.

Contribution

First LHCb results on charmless B decays, observing key decay modes to aid in measuring the angle gamma and exploring New Physics effects.

Findings

Observation of B0→K+π− decay

Observation of B+→K+π+π− decay

Potential to determine gamma and investigate New Physics

Abstract

In this paper we present first LHCb results on charmless charged two- and three-body $B$ meson decays. In particular, using the first picobarn of integrated luminosity, LHCb observed the $B^{0}\rightarrow K^{+}\pi^{-}$ and $B^{+}\rightarrow K^{+}\pi^{+}\pi^{-}$ decays. Such decays provide an interesting way to determine the angle $\gamma$ of the Unitary Triangle, thanks to the possible presence of New Physics in the penguin loops.