1994/06/10 by Marco Aurelio Diaz, Diaz, Marco Aurelio
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9406280
14 pages (plain tex), 4 figures not included, VAND-TH-94-11. Presented in the International Symposium ``Physics Doesn't Stop: Recent Developments in Phenomenology'', University of Wisconsin, Madison WI, April 11-13, 1994
arxiv created 1994/06/10 · arxiv updated 2009/11/30
Minimal N=1 supergravity with a radiatively broken electroweak symmetry group is studied in the light gluino scenario. Constraints from the b→ sγ decay and from the masses of the light CP-even neutral Higgs mh, the lightest chargino mχ±1, and the second lightest neutralino mχ02 are analyzed. We consider models in which the relation A=B+m0 holds. We plot the allowed region in the tanβ-μ plane consistent with chargino/neutralino searches, and an upper bound on tanβ given by 1.82 (1.85) for μ>0 (μ<0) is found. We analize the consistency of this upper bound with experimental constraints on the lightest Higgs mass. We find that a gluino with a mass of a few GeV is incompatible with this kind of models.