Speaker
Violaine Bellee
(Ecole Polytechnique Federale de Lausanne (CH))
Description
Radiative decays of $B$ mesons are flavour-changing neutral current processes used as probes for new physics (NP). They occur predominantly via $b \rightarrow s \gamma$ loop diagrams in which the photon is expected, in the Standard Model, to be mostly right handed. However, a significant left-handed component could arise from NP phenomena. The LHCb collaboration is attempting to measure the photon polarisation parameter $\lambda_\gamma$ via several methods. We present here a promising way to access this quantity through a full five-dimensional amplitude analysis of $B^{+} \rightarrow K^+ \pi^- \pi^+ \gamma$ decays using data collected with the LHCb detector from 2011 to 2016.
Primary authors
Olivier Schneider
(Ecole Polytechnique Federale de Lausanne (CH))
Preema Rennee Pais
(Ecole Polytechnique Federale de Lausanne (CH))
Frederic Blanc
(Unknown)
Albert Puig Navarro
(Universität Zürich (CH))
Violaine Bellee
(Ecole Polytechnique Federale de Lausanne (CH))
