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Speakers: Zhirui Xu and Roman Zwicky
The first experimental study of the photon polarization in radiative Bs decays at LHCb will be presented.
To begin with, an introduction will be given on motivations and new physics models that can affect the Standard Model prediction.
Successively, the measurement will be presented. A time-dependent analysis of the Bs -> phi gamma decay rate is conducted to determine a parameter which is related to the ratio of right- over left-handed photon polarization amplitudes in b -> s gamma transitions.