Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-04-11
Phys.Rev. D54 (1996) 6903-6908
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX, 14 pages, 4 figures, 3 tables. Uses epsf.sty. PostScript available at http://deneb.ugr.es/papers/ugft60.ps.gz Plain LaT
Scientific paper
10.1103/PhysRevD.54.6903
Numerical correlations between fermion masses and mixings could indicate the presence of a flavor symmetry at high energies. In general, the search for these correlations using low-energy data requires an estimate of leading-log radiative corrections. We present a complete analysis of the evolution between the electroweak and the grand unification scales of quark mass parameters in minimal supersymmetric models. We take $M_t=180$ GeV and consider all possible values of $\tan \beta$. We also analize the possibility that the {\it top} and/or the {\it bottom} Yukawa couplings result from an intermediate quasifixed point (QFP) of the equations. We show that the quark mixings of the third family do {\it not} have a QFP behaviour (in contrast to the masses, the renormalization of all the mixings is linear), and we evaluate the low-energy value of $V_{ub}$ which corresponds to $V_{ub}(M_X)=0$. Then we focus on the renormalization-group corrections to {\it (i)} typical relations obtained in models with flavor symmetries at the unification scale and {\it (ii)} a superstring-motivated pattern of quark mass matrices. We show that in most of the models the numerical prediction for $V_{ub}$ can be {\it corrected} in both directions (by varying $\tan\beta$) due to {\it top} or {\it bottom} radiative corrections.
Aguilar-Saavedra Juan Antonio
Masip Manuel
No associations
LandOfFree
Scale dependence of quark mass matrices in models with flavor symmetries 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 Scale dependence of quark mass matrices in models with flavor symmetries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scale dependence of quark mass matrices in models with flavor symmetries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-30379