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Postcards from oases in the desert: phenomenology of SUSY with intermediate scales

Biggio, Carla and Calibbi, Lorenzo and Masiero, Antonio and Vempati, Sudhir K (2012) Postcards from oases in the desert: phenomenology of SUSY with intermediate scales. In: JOURNAL OF HIGH ENERGY PHYSICS (8).

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Official URL: http://dx.doi.org/10.1007/JHEP08(2012)150


The presence of new matter fields charged under the Standard Model gauge group at intermediate scales below the Grand Unification scale modifies the renormalization group evolution of the gauge couplings. This can in turn significantly change the running of the Minimal Supersymmetric Standard Model parameters, in particular the gaugino and the scalar masses. In the absence of new large Yukawa couplings we can parameterise all the intermediate scale models in terms of only two parameters controlling the size of the unified gauge coupling. As a consequence of the modified running, the low energy spectrum can be strongly affected with interesting phenomenological consequences. In particular, we show that scalar over gaugino mass ratios tend to increase and the regions of the parameter space with neutralino Dark Matter compatible with cosmological observations get drastically modified. Moreover, we discuss some observables that can be used to test the intermediate scale physics at the LHC in a wide class of models.

Item Type: Journal Article
Publisher: Springer
Additional Information: Copyright for this article belongs to SPRINGER, NEW YORK, USA
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 12 Dec 2012 06:25
Last Modified: 12 Dec 2012 06:25
URI: http://eprints.iisc.ac.in/id/eprint/45506

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