LHC benchmarks from flavored gauge mediation

Ierushalmi, N. and Sho, Iwamoto and Lee, G. and Nepomnyashy, V. and Shadmi, Y. (2016) LHC benchmarks from flavored gauge mediation. JOURNAL OF HIGH ENERGY PHYSICS (7). ISSN 1126-6708

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Abstract

We present benchmark points for LHC searches from flavored gauge mediation models, in which messenger–matter couplings give flavor-dependent squark masses. Our examples include spectra in which a single squark—stop, scharm, or sup—is much lighter than all other colored superpartners, motivating improved quark flavor tagging at the LHC. Many examples feature flavor mixing; in particular, large stop–scharm mixing is possible. The correct Higgs mass is obtained in some examples by virtue of the large stop A-term. We also revisit the general flavor and CP structure of the models. Even though the A- terms can be substantial, their contributions to EDM’s are very suppressed, because of the particular dependence of the A-terms on the messenger coupling. This holds regardless of the messenger-coupling texture. More generally, the special structure of the soft terms often leads to stronger suppression of flavor- and CP-violating processes, compared to naive estimates.

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