The stau exchange contribution to muon g-2 in the decoupling solution

Details The stau exchange contribution to muon g-2 in the decoupling solution The stau exchange contribution to muon g-2 in the decoupling solution

2001-12-12

arxiv.org/abs/hep-ph/0112163v2

Phys.Lett. B529 (2002) 117-123

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, latex2e with axodraw.sty, comments and reference added

Scientific paper

10.1016/S0370-2693(02)01252-2

We study the possibility that the lepton-flavor changing process can induce the suitable magnitude of the muon anomalous magnetic moment (g_\mu -2) in the decoupling solution to the flavor problem in the minimal supersymmetric standard model. Our analyses introduce the flavor mixings of left- and right-handed stau and smuon phenomenologically. It is found that if both the left- and right-handed sleptons have sizable flavor mixings, the correction to g_\mu -2 from the lighter slepton can reach to 10^{-9} while the correction to the branching ratio of \tau \to \mu \gamma satisfies the current experimental bound. On the other hand, when only the left-handed or right-handed sleptons have the large flavor mixing, the suitable magnitude of the correction to g_\mu-2 is not realized owing to the experimental bound of \tau \to \mu \gamma.

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