Splitting the Wino Multiplet by Higher-Dimensional Operators in Anomaly Mediation
arXiv:0809.4832 · doi:10.1103/PhysRevD.79.035008
Abstract
In a class of AMSB models, the splitting in the Wino multiplet turns out to be very small, such as the often-quoted 170 MeV in minimal AMSB, which originates from MSSM loops. Such a small mass gap is potentially a window into higher scale physics, as it may be sensitive to higher-dimensional operators. We show that still within AMSB one can get a much larger splitting in the Wino multiplet--a few GeV--if the scale of the new physics is comparable to the gravitino mass (which is indeed often the scale of new physics in anomaly mediation).
18 pages; v2: references added, matching journal version
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