Effects of Universal Extra Dimensions on $B^0 - {\bar B^0}$ Mixing

Simple item page
dc.creatorChakraverty, Debrupa
dc.creatorHuitu, Katri
dc.creatorKundu, Anirban
dc.date2002-12-03
dc.date2003-01-10
dc.date.accessioned2026-07-07T10:33:12Z
dc.date.available2026-07-07T10:33:12Z
dc.descriptionWe study contributions coming to $Δm_B$ from one or more universal extra dimensions (UED) in which all the Standard Model fields can propagate. In the model with a single UED, the box diagrams for mixing are convergent and therefore insensitive to the cutoff scale of the theory. In the case of two UEDs, the result is not very sensitive to the cut-off scale due to GIM mechanism. Within the present range of the parameters at $1 σ$ level, the lower bound on the compactification scale 1/R has been estimated to be 165 GeV for one UED and 280 GeV for two UEDs. The bound increases drastically if one can have a better determination of the $B$ meson decay constant $f_B$ and the QCD correction parameter $B_B$. For example, it rises to 740 GeV (for one UED) if the error (at $1σ$) in the determination of $f_B\sqrt{B_B}$ from quenched lattice calculation is reduced to one-third from its present value. The UED contributions to the $K$ system are strongly suppressed.
dc.description12 pages, 1 postscript figure Some modifications, including the correction of a computational error, with an effect of less than 20 per cent change in the final result. A few references added
dc.identifierhttps://arxiv.org/abs/hep-ph/0212047
dc.identifierhttp://arxiv.org/abs/hep-ph/0212047
dc.identifierPhys.Lett.B558:173-181,2003
dc.identifierdoi:10.1016/S0370-2693(03)00281-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179025
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEffects of Universal Extra Dimensions on $B^0 - {\bar B^0}$ Mixing
dc.typetext

Files

Collections

arXiv