Angular analysis of B -> J/psi K-1: Towards a model independent determination of the photon polarization with B -> K-1 gamma

摘要

We propose a model independent extraction of the hadronic information needed to determine the photon polarization of the b -> s gamma process by the method utilizing the B -> K1 gamma -> K pi pi gamma angular distribution. We show that exactly the same hadronic information can be obtained by using the B -> J/psi K-1 -> J/psi K pi pi channel, which leads to a much higher precision. (C) 2016 The Authors. Published by Elsevier B.V.