Supersymmetric renormalisation of the CKM matrix and new constraints on the squark mass matrices

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Typos in the appendix corrected; 26 pages, 10 figures

Scientific paper

10.1103/PhysRevD.79.035018

We compute the finite renormalisation of the Cabibbo-Kobayashi-Maskawa (CKM) matrix induced by gluino-squark diagrams in the MSSM with non-minimal sources of flavour violation. Subsequently we derive bounds on the flavour-off-diagonal elements of the squark mass matrices by requiring that the radiative corrections to the CKM elements do not exceed the experimental values. Our constraints on the associated dimensionless quantities delta^{d LR}_{ij}, j>i, are stronger than the bounds from flavour-changing neutral current (FCNC) processes if gluino and squarks are heavier than 500 GeV. Our bound on |delta^{u LR}_{12}| is stronger than the FCNC bound from D-D-bar mixing for superpartner masses above 900 GeV. We further find a useful bound on |delta_{13}^{u LR}|, for which no FCNC constraint is known. Our results imply that it is still possible to generate all observed flavour violation from the soft supersymmetry-breaking terms without conflicting with present-day data on FCNC processes. We suggest that a flavour symmetry renders the Yukawa sector flavour-diagonal and the trilinear supersymmetry-breaking terms are the spurion fields breaking this flavour symmetry. We further derive the dominant supersymmetric radiative corrections to the couplings of charged Higgs bosons and charginos to quarks and squarks.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Supersymmetric renormalisation of the CKM matrix and new constraints on the squark mass matrices 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 Supersymmetric renormalisation of the CKM matrix and new constraints on the squark mass matrices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supersymmetric renormalisation of the CKM matrix and new constraints on the squark mass matrices will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-460764

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.