Muon anomalous magnetic moment in supersymmetric scenarios with an intermediate scale and nonuniversality - art. no. 093012

Citation
Dg. Cerdeno et al., Muon anomalous magnetic moment in supersymmetric scenarios with an intermediate scale and nonuniversality - art. no. 093012, PHYS REV D, 6409(9), 2001, pp. 3012
Citations number
83
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6409
Issue
9
Year of publication
2001
Database
ISI
SICI code
0556-2821(20011101)6409:9<3012:MAMMIS>2.0.ZU;2-#
Abstract
We analyze the anomalous magnetic moment of the muon a,, in supersymmetric scenarios. First we concentrate on scenarios with universal soft terms. We find that a moderate increase of a, can be obtained by lowering the unifica tion scale M-GUT to intermediate values of 10(10) to 10(12) GeV. However, l arge values of tan beta are still favored. Then we study the case of nonuni versal soft terms. For the usual value M-GUT approximate to 10(16) GeV. we obtain alpha (mu) in the favored experimental range even for moderate tan b eta regions (tan beta greater than or similar to 5). Finally, we give an ex plicit example of these scenarios. In particular, we show that in a D-brane model, wre the string scale is naturally of the order of 10(10) to 10(12) GeV and the soft terms are nonuniversal. alpha (mu) is enhanced with low ta n beta.