English

Phenomenology of Light Gauginos

High Energy Physics - Phenomenology 2007-05-23 v1

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=91m_Z=91 GeV and mt175m_t \sim 175 GeV implies that scalar masses are generally 100200100-200 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:100600m_{\gluino}: 100 - 600 MeV and the photino mass can be estimated to be m\photino:1001400m_{\photino}: 100 - 1400 MeV. New hadrons with mass 112\sim 1 \frac{1}{2} GeV are predicted and described. The ``extra'' flavor singlet pseudoscalar observed in two experiments in the ι(1440)\iota(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 10115~10^{-11} sec and would not have shown up in existing searches. Search strategies and other consequences of the scenario are discussed.

Cite

@article{arxiv.hep-ph/9504295,
  title  = {Phenomenology of Light Gauginos},
  author = {Glennys R. Farrar},
  journal= {arXiv preprint arXiv:hep-ph/9504295},
  year   = {2007}
}

Comments

21pp latex, including 3 figs