New constraints on supergravity models from $b\to s\gamma$

Abstract

We perform a detailed study of the constraints from $b\to s\gamma$ on a large class of supergravity models, including generic four-parameter supergravity models, the minimal $SU(5)$ supergravity model, and $SU(5)\times U(1)$ supergravity. For each point in the parameter spaces of these models we obtain a range of $B(b\to s\gamma )$ values which should conservatively account for the unknown next-to-leading-order QCD corrections. We then classify these points into three categories: ``excluded" points have ranges of $B(b\to s\gamma )$ which do not overlap with the experimentally allowed range, ``preferred" points have $B(b\to s\gamma )$ ranges which overlap with the Standard Model prediction, and ``Ok" points are neither ``excluded" nor ``preferred" but may become ``excluded" should new CLEO data be consistent with the Standard Model prediction. In {\em all} cases we observe a strong tendency for the ``preferred" points towards one sign of the Higgs mixing parameter $\mu$. For the opposite sign of $\mu$ there is an upper bound on $\tan \beta$: $\tanβ\lsim25$ in general, and $\tanβ\lsim6$ for the ``preferred" points. We conclude that new CLEO data will provide a decisive test of supergravity models.

26 pages, 11 figures (not included), Latex. Figures are available via anonymous ftp from hplaa02.cern.ch /pub/lopez as uuencoded file BsgFigs.uu. Complete ps file is also available (BsgPaper.ps)

References in corpus (17)

• The Top Quark Mass in Supersymmetric SO(10) Unification
• Electroweak Symmetry Breaking and Bottom-Top Yukawa Unification
• Towards a Theory of Soft Terms for the Supersymmetric Standard Model
• Theoretical Uncertainties and Phenomenological Aspects of $B\to X_s\gamma$ Decay
• "Large $(g-2{)}_{\mu }$ in SU(5)xU(1) supergravity models"
• Exact ${\alpha }_s$ Calculation of $b\to s+\gamma$, \ $b\to s+g$
• Supersymmetric $b\to s\gamma$ with Large Chargino Contributions
• The Bottom Mass Prediction in Supersymmetric Grand Unification; Uncertainties and Constraints
• $b\to s\gamma$ AND $b\to sg$: A THEORETICAL REAPPRAISAL
• The Decay $b\to s\gamma$ In The Mssm Revisited
• Light Stop and the $b\to s\gamma$ Process
• The b -> s gamma decay in supergravity with radiatively electroweak breaking
• The strongest experimental constraints on SU(5)xU(1) supergravity models
• Towards a unified string supergravity model
• Predictions for Constrained Minimal Supersymmetry with Bottom-Tau Mass Unification
• A Layman's guide to SUSY GUTs
• Status of the superworld: from theory to experiment

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