New Physics in the heavy quark sector could arise in decay rates, CP parameters, or the chirality of the final state particles. The LHCb experiment can measure the photon polarization of several rare decays in which a penguin diagram is involved, probing the V-A coupling of the W boson to left-handed quarks in electroweak interactions.
Direct methods, analyzing the angular distribution of the final particles, and indirect methods, for example exploiting the properties of the mixing of neutral B mesons in deacys like Bs -> Phi Gamma, will be discussed.