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Towards an amplitude analysis of the decay $\Lambda_b^0\to pK^-\gamma$

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arxiv 2002.02692 v3 pith:IATKHGMX submitted 2020-02-07 hep-ph hep-ex

classification hep-phhep-ex
keywords amplitudeanalysisdecayformalismgammalambdaableapplied
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

The helicity formalism applied to the radiative decay $\Lambda_b^0\to pK^-\gamma$ is presented for the first time in this paper. The aim is to provide the necessary formalism to be able to resolve the resonant $pK^-$ structures at the photon pole by means of an amplitude analysis. Experimental effects, such as resolution, are also discussed.

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