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Analysis of the radiative Λ_brightarrow Λ γ transition in SM and scenarios with one or two universal extra dimensions

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arxiv 1303.2233 v2 pith:4HOVT74H submitted 2013-03-09 hep-ph

Analysis of the radiative Λ_brightarrow Λ γ transition in SM and scenarios with one or two universal extra dimensions

classification hep-ph
keywords lambdaextramodelstandarddecaydimensionsgammamodels
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We investigate the radiative process of the $\Lambda_b\rightarrow \Lambda \gamma$ in the standard model as well as models with one or two compact universal extra dimensions. Using the form factors entered to the low energy matrix elements, calculated via light cone QCD in full theory, we calculate the total decay width and branching ratio of this decay channel. We compare the results of the extra dimensional models with those of the standard model on the considered physical quantities and look for the deviations of the results from the standard model predictions at different values of the compactification scale (1/R).

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