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arXiv · 1610.09924

Effects of non-minimal Universal Extra Dimension on $B\rightarrow X_s\gamma$

Anindya Datta·Avirup Shaw
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Abstract

We estimate contributions from Kaluza-Klein excitations of third generation quarks and gauge bosons to the branching ratio of $B\rightarrow X_s\gamma$ decay process in 5-Dimensional Universal Extra Dimensional scenario with non-vanishing boundary localised terms. This model is conventionally known as non-minimal Universal Extra Dimensional model. We have derived the lower limit on the size of the extra dimension by comparing our theoretical estimation of the branching ratio which includes next-to-next-to leading order QCD corrections with its experimentally measured value. Coefficients of the boundary localised terms have also been constrained. 95 \% C.L. lower limit on inverse of radius of compactification ($R^{-1}$) can be as large as 670 GeV for some choice of the value of coefficients of boundary localised terms.

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Anindya Datta, Avirup Shaw. 2016-10-31. Effects of non-minimal Universal Extra Dimension on $B\rightarrow X_s\gamma$. https://doi.org/10.1103/physrevd.95.015033

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