Angular analysis of B -> J/psi K1 : towards a model independent determination of the photon polarization with B-> K1 gamma

Abstract : 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 K1 -> J/psi K pi pi channel, which leads to a much higher precision.
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https://hal.archives-ouvertes.fr/hal-01362210
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Submitted on : Thursday, September 8, 2016 - 12:24:47 PM
Last modification on : Thursday, March 15, 2018 - 4:56:07 PM

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Emi Kou, Alain Le Yaouanc, Andrey Tayduganov. Angular analysis of B -> J/psi K1 : towards a model independent determination of the photon polarization with B-> K1 gamma. Physics Letters B, Elsevier, 2016, 763, pp.66-71. ⟨10.1016/j.physletb.2016.10.013⟩. ⟨hal-01362210⟩

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