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Phenomenology of Light Gauginos

1995/04/13 by Glennys R. Farrar, Farrar, Glennys R.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9504295

21pp latex, including 3 figs

arxiv created 1995/04/13 · arxiv updated 2009/11/30

Abstract

I advocate the virtues of a very economical version of the minimal supersymmetric standard model which avoids cosmological problems often encountered in dynamical SUSY-breaking and solves the SUSY-CP problem. Imposing mZ=91 GeV and mt ∼ 175 GeV implies that scalar masses are generally 100-200 GeV. The gluino and photino are massless at tree level. At 1-loop, the gluino mass is predicted to be in the range m\gluino: 100 - 600 MeV and the photino mass can be estimated to be m\photino: 100 - 1400 MeV. New hadrons with mass ∼ 1 (1)/(2) GeV are predicted and described. The ``extra'' flavor singlet pseudoscalar observed in two experiments in the ι(1440) region, if confirmed, is naturally interpreted as the state which gets its mass via the QCD anomaly. Its superpartner, a gluon-gluino bound state, generally has a lifetime longer than 5~10-11 sec and would not have shown up in existing searches. Search strategies and other consequences of the scenario are discussed.

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