Ultraviolet sensitivity of rare decays in nonuniversal extra dimensional models
Abstract
We consider a nonuniversal fivedimensional model in which fermions are localized on a fourdimensional brane, while gauge bosons and a scalar doublet can travel in the bulk. As a result of KaluzaKlein number nonconservation at the branebulk intersection, the ultraviolet divergence does not cancel out in some physical observables. For example, the B_{d}→l^{+}l^{} decay amplitude is linearly divergent, while the BB¯ mixing amplitude is log divergent. We attempt to identify the exact source of this nonrenormalizability. We compare and contrast our results with those obtained in the universal fivedimensional model where all particles travel in the extra dimension.
 Publication:

Physical Review D
 Pub Date:
 April 2004
 DOI:
 10.1103/PhysRevD.69.076009
 arXiv:
 arXiv:hepph/0309110
 Bibcode:
 2004PhRvD..69g6009D
 Keywords:

 11.10.Kk;
 12.60.i;
 Field theories in dimensions other than four;
 Models beyond the standard model;
 High Energy Physics  Phenomenology
 EPrint:
 Latex, 11 pages, uses axodraw.sty