Extra dimensions at the one loop level: Z -> b(b)over-bar and B-(B)over-bar mixing
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Extra dimensions at the one loop level: Z -> b(b)over-bar and B-(B)over-bar mixing

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Extra dimensions at the one loop level: Z -> b(b)over-bar and B-(B)over-bar mixing

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dc.contributor.author Papavassiliou, Joannis
dc.contributor.author Santamaria, Arcadi
dc.date.accessioned 2017-06-26T15:25:10Z
dc.date.available 2017-06-26T15:25:10Z
dc.date.issued 2000
dc.identifier.uri http://hdl.handle.net/10550/59202
dc.description.abstract We study, at the one loop level, the dominant new physics contributions from extra dimensions to Z -> b(b)over-bar, as well as B-(B)over-bar and K-(K)over-bar mixing. We use a model with one extra dimension containing fermions which live in four dimensions, and gauge bosons and one scalar doublet propagating in five dimensions. We find that the effect of the infinite tower of Kaluza-Klein modes in Z -> b(b)over-bar is finite and gives a negative correction to Rb = Γb/Γh, which is used to set a lower bound of 1 TeV on the compactification scale Mc. On the other hand, we show that the box diagrams contributing to B-(B)over-bar and K-(K)over-bar mixing are divergent and, after proper regularization, we find that they increase the value of the function S(xt) which governs this mixing. The obtained value is perfectly compatible with available data.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2001, vol. 63, num. 1, p. 016002
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Papavassiliou, Joannis Santamaria, Arcadi 2001 Extra dimensions at the one loop level: Z -> b(b)over-bar and B-(B)over-bar mixing Physical Review D 63 1 016002
dc.subject Física
dc.subject Partícules (Física nuclear)
dc.title Extra dimensions at the one loop level: Z -> b(b)over-bar and B-(B)over-bar mixing
dc.type info:eu-repo/semantics/article
dc.date.updated 2017-06-26T15:25:10Z
dc.identifier.doi https://doi.org/10.1103/PhysRevD.63.016002
dc.identifier.idgrec 008751

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