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

Abstract : 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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Contributor : Sylvie Flores <>
Submitted on : Wednesday, April 27, 2011 - 3:20:32 PM
Last modification on : Friday, November 27, 2020 - 5:26:04 PM

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P. Mertens, C. Smith. The s ---> d gamma decay in and beyond the Standard Model. Journal of High Energy Physics, Springer, 2011, 2011, pp.069. ⟨10.1007/JHEP08(2011)069⟩. ⟨in2p3-00589112⟩



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