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Gravitational rescue of minimal gauge mediation

Iyer, Abhishek M and Mummidi, Suryanarayana V and Vempati, Sudhir K (2016) Gravitational rescue of minimal gauge mediation. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 31 (10).

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Official URL: http://dx.doi.org/10.1142/S0217751X16500457

Abstract

Gravity mediated supersymmetry breaking becomes comparable to gauge mediated supersymmetry breaking contributions when messenger masses are close to the GUT scale. By suitably arranging the gravity contributions, one can modify the soft supersymmetry breaking sector to generate a large stop mixing parameter and a light Higgs mass of 125 GeV. In this kind of hybrid models, however, the nice features of gauge mediation like flavor conservation, etc. are lost. To preserve the nice features, gravitational contributions should become important for lighter messenger masses and should be important only for certain fields. This is possible when the hidden sector contains multiple (at least two) spurions with hierarchical vacuum expectation values. In this case, the gravitational contributions can be organized to be ``just right.'' We present a complete model with two spurion hidden sector where the gravitational contribution is from a warped flavor model in a Randall-Sundrum setting. Along the way, we present simple expressions to handle renormalization group equations when supersymmetry is broken by two different sectors at two different scales.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WORLD SCIENTIFIC PUBL CO PTE LTD, 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
Keywords: GMSB; Randall-Sundrum; hybrid models
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Id for Latest eprints
Date Deposited: 12 May 2016 07:03
Last Modified: 12 May 2016 07:03
URI: http://eprints.iisc.ac.in/id/eprint/53812

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