Closing the Light Gluino Window in Supersymmetric Grand Unified Models

Details Closing the Light Gluino Window in Supersymmetric Grand Unified Models Closing the Light Gluino Window in Supersymmetric Grand Unified Models

1994-04-07

arxiv.org/abs/hep-ph/9404234v3

Phys.Rev.Lett. 73 (1994) 2409-2412

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages (plain tex), 1 figure not included, VAND-TH-94-7-R. An error is corrected. Modifications to the text and the figure a

Scientific paper

10.1103/PhysRevLett.73.2409

We study the light gluino scenario giving special attention to constraints from the masses of the light CP-even neutral Higgs $m_h$, the lightest chargino $m_{\chi^{\pm}_1}$, and the second lightest neutralino $m_{\chi^0_2}$, and from the $b\rightarrow s\gamma$ decay. We find that minimal $N=1$ supergravity, with a radiatively broken electroweak symmetry group and universality of scalar and gaugino masses at the unification scale, is incompatible with the existence of a light gluino.

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