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Top quark Kaluza-Klein mode mixing in the Randall-Sundrum bulk Standard Model and Constraint from Delta
ho | | C. S. Kim
; J. D. Kim
; Jeong-hyeon Song
; | | Date: |
13 Nov 2002 | | Subject: | hep-ph | | Abstract: | Randall-Sundrum scenario with all the standard model (SM) fermions and gauge bosons in the bulk is phenomenologically studied. Even though the simple assumption of universal bulk fermion mass m_psi leads to the same Kaluza-Klein (KK) mass spectrum for all the SM fermions and thus suppresses new contributions to Flavor-Changing-Neutral-Current and the
ho parameter, large Yukawa coupling of the top quark generates its KK mode mixing and breaks the degeneracy: unacceptably large contribution to Delta
ho occurs. With a different bulk fermion mass to SU(2) singlet bottom quark, we demonstrate that there exists some parameter space to satisfy the Delta
ho constraint. | | Source: | arXiv, hep-ph/0211189 | | Services: | Forum | Review | PDF | Favorites | |
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