Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-04-13
Phys.Lett.B430:274-280,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX file plus postscript figure files, 17 pages; minor typographical changes, to appear in Physics Letters B
Scientific paper
10.1016/S0370-2693(98)00533-4
We present a parametrization of the supersymmetric standard model without R-parity that permits efficient phenomenological analyses of the full model without a priori assumptions. Under the parametrization, which is characterized by a single vacuum expectation value for the scalar components of the Y=-1/2 superfields, the expressions for tree-level mass matrices are quite simple. They do not involve the trilinear R-parity violating couplings; however, the bilinear {\mu}_i terms do enter and cannot be set to zero without additional assumptions. We set up a framework for doing phenomenology and show some illustrative results for fermion mass matrices and related bounds on parameters. We find in particular that large values of tan(beta) can suppress R-parity violating effects, substantially weakening experimental constraints.
Bisset Mike
Kong Otto C. W.
Macesanu Cosmin
Orr Lynne H.
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