科研之友
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摘要
We analyze the theoretical prediction on the branching ratio of →Xs γ to order ΛEW2 /ΛKK2 in extension of the standard model with a warped extra dimension and the custodial symmetry SU3c×SU2L×SU2R×U1X×PLR , where ΛKK denotes the energy scale of low-lying Kaluze-Klein excitations and ΛEW denotes the electroweak energy scale. Contributions from the infinite series of Kaluze-Klein excitations are summed over through the residue theorem. The numerical result indicates that the present experimental data constrain the parameter space of the concerned model strongly.
