Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-02-05
Phys.Rev. D72 (2005) 055002
Physics
High Energy Physics
High Energy Physics - Phenomenology
Revtex4, 16 pages including EPS figures. A few references added and the relationship between the upper bound on tan_\beta and
Scientific paper
10.1103/PhysRevD.72.055002
The severe constraints imposed on the parameter space of the minimal split supersymmetry model by the infrared fixed point solution of the top Yukawa coupling $Y_t$ are studied in detail in terms of the value of the top quark mass measured at the Tevatron together with the lower bound on the lightest Higgs mass established by LEP. The sensitive dependence of the higgsino mass parameter $\mu$ and of the gaugino coupling strengths ${\tilde g}_{u,d}$, ${\tilde g}^\prime_{u,d}$ on the value of $Y_t$ in the vicinity of the Landau pole is a remarkable consequence. A few other interesting features emerge, though the model is found to be disfavored within the infrared fixed point scenario because of the need to have several fine tunings at work on account of the requirement of a low upper bound on $\tan\beta$.
Huitu Katri
Laamanen Jari
Roy Probir
Roy Sourov
No associations
LandOfFree
Infrared fixed point of the top Yukawa coupling in split supersymmetry 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 Infrared fixed point of the top Yukawa coupling in split supersymmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared fixed point of the top Yukawa coupling in split supersymmetry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-436920