The s ---> d gamma decay in and beyond the Standard Model

Details The s ---> d gamma decay in and beyond the Standard Model The s ---> d gamma decay in and beyond the Standard Model

2011-03-30

arxiv.org/abs/1103.5992v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

54 pages, 14 eps figures

Scientific paper

The New Physics sensitivity of the s ---> d gamma transition and its accessibility through hadronic processes are thoroughly investigated. Firstly, the Standard Model predictions for the direct CP-violating observables in radiative K decays are systematically improved. Besides, the magnetic contribution to epsilon prime is estimated and found subleading, even in the presence of New Physics, and a new strategy to resolve its electroweak versus QCD penguin fraction is identified. Secondly, the signatures of a series of New Physics scenarios, characterized as model-independently as possible in terms of their underlying dynamics, are investigated by combining the information from all the FCNC transitions in the s ---> d sector.

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