Constraints on SUSY GUT unification from b ---> s gamma decay

Jul, 1994
17 pages
Published in:
  • Phys.Rev.D 51 (1995) 2438-2443
e-Print:
Report number:
  • MAD-PH-842,
  • RAL-94-046

Citations per year

1994199820022006201002468101214
Abstract:
The top-quark Yukawa infrared fixed-point solution of the renormalization group equations, with minimal supersymmetry and GUT unification, defines a low-energy spectrum of supersymmetric particle masses in terms of a few GUT-scale parameters assuming universal boundary conditions. We give predictions in this model for the inclusive bsγb\to s\gamma branching fraction and investigate the impact of non-universal scalar mass boundary conditions. We find our results do not depend significantly on the value of the GUT-scale trilinear coupling A GA~G. The small tanβ\tan \beta region favors predictions for the inclusive bsγb\to s\gamma branching fraction close to that of the Standard Model value. Nevertheless forthcoming experimental results can eliminate some regions of the GUT parameter space.
  • bottom
  • top: radiative decay
  • radiative decay: quark
  • top: branching ratio
  • decay: inclusive reaction
  • inclusive reaction: decay
  • sparticle: mass
  • mass: sparticle
  • grand unified theory
  • supersymmetry