Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-03-05
Phys.Rev. D64 (2001) 055001
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX, 29 pages, 14 eps figures, figure for deflected anomaly mediation is corrected, reference added
Scientific paper
10.1103/PhysRevD.64.055001
Motivated by the recently measured muon's anomalous magnetic moment $a_{\mu}$, we examine the supersymmetry contribution to $a_{\mu}$ in various mediation models of supersymmetry breaking which lead to predictive flavor conserving soft parameters at high energy scale. The studied models include dilaton/modulus-mediated models in heterotic string/$M$ theory, gauge-mediated model, no-scale or gaugino-mediated model, and also the minimal and deflected anomaly-mediated models. For each model, the range of $a^{SUSY}_{\mu}$ allowed by other experimental constraints, e.g. b --> s\gamma and the collider bounds on superparticle masses, is obtained together with the corresponding parameter region of the model. Gauge-mediated models with low messenger scale can give any $a^{SUSY}_{\mu}$ within the $2\sigma$ bound. In many other models, b --> s\gamma favors $a^{SUSY}_{\mu}$ smaller than either the $-1\sigma$ value ($26\times 10^{-10}$) or the central value ($42\times 10^{-10}$).
Choi Kiwoon
Hwang Kyuwan
Kang Sin Kyu
Lee Kang Young
Song Wan Young
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