Top-Charm flavor changing contributions to the effective $bsZ$ vertex

Details Top-Charm flavor changing contributions to the effective $bsZ$ vertex Top-Charm flavor changing contributions to the effective $bsZ$ vertex

1995-09-06

arxiv.org/abs/hep-ph/9509233v1

Phys.Lett. B365 (1996) 327

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, latex, 1 figure (uses LaTeX Routine FEYNMAN.TEX available from hep-ph archive)

Scientific paper

10.1016/0370-2693(95)01308-3

We analyze the effects of a tree level flavor changing $tcZ$ vertex induced by a mixing with new isosinglet $Q=2/3$ quarks, on the effective $bsZ$ vertex. We compute the contributions arising from the new electroweak penguin diagrams involving one insertion of the $tcZ$ vertex. We show that a generalized GIM mechanism ensures the cancellation of the mass independent terms as well as of the new divergences. Unexpectedly, the presence of a $tcZ$ coupling cannot enhance the rates for the $Z$ mediated flavor changing decays \bsll\ and \bsnn, implying that these processes cannot be used to set limits on the $tcZ$ coupling. The additional effects of the heavy isosinglets are compared with the well studied effects of new isodoublets appearing in multi-generational models.

Affiliated with

Also associated with

No associations

Rating

Top-Charm flavor changing contributions to the effective $bsZ$ vertex does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Top-Charm flavor changing contributions to the effective $bsZ$ vertex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Top-Charm flavor changing contributions to the effective $bsZ$ vertex will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-171049