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• W2039800902 abstract "We study top quark Kaluza-Klein (KK) mode mixing in the Randall-Sundrum scenario with all the SM fermions and gauge bosons in the bulk. Even though the simple assumption of a universal bulk fermion mass ${m}_{ensuremath{psi}}$ leads to the same KK mass spectrum for all SM fermions and thus suppresses new contributions to the flavor changing neutral current and the $ensuremath{rho}$ parameter, the large Yukawa coupling of the top quark generates mixing among its KK modes and breaks the degeneracy: An unacceptably large contribution to $ensuremath{Delta}ensuremath{rho}$ occurs. In order to satisfy the $ensuremath{Delta}ensuremath{rho}$ constraint, we relax the model by assigning a different bulk fermion mass to the SU(2) singlet bottom quark and demonstrate that there exists some limited parameter space where the $ensuremath{Delta}ensuremath{rho}$ constraint is satisfied. It is also shown that the current measurement of $mathrm{Br}(stackrel{ensuremath{rightarrow}}{B}{X}_{s}+ensuremath{gamma})$ can be accommodated in this modified model, and the one sigma level precision constrains the effective weak scale ${k}_{mathrm{EW}}$ such as ${k}_{mathrm{EW}}ensuremath{gtrsim}3mathrm{TeV}$ for ${m}_{ensuremath{psi}}/k=ensuremath{-}0.4,$ where ${k}_{mathrm{EW}}$ is the warp-suppressed ${mathrm{AdS}}_{5}$ curvature." @default.
• W2039800902 created "2016-06-24" @default.
• W2039800902 creator A5030465999 @default.
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• W2039800902 date "2003-01-09" @default.
• W2039800902 modified "2023-09-27" @default.
• W2039800902 title "Top quark Kaluza-Klein mode mixing in the Randall-Sundrum bulk standard model and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>X</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi>γ</mml:mi></mml:math>" @default.
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• W2039800902 doi "https://doi.org/10.1103/physrevd.67.015001" @default.
• W2039800902 hasPublicationYear "2003" @default.
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