Hard supersymmetry-breaking 'wrong-Higgs' couplings of the MSSM
- Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, CA 95064 (United States)
In the minimal supersymmetric extension of the standard model (MSSM), if the two-Higgs doublets are lighter than some subset of the superpartners of the standard model particles, then it is possible to integrate out the heavy states to obtain an effective broken-supersymmetric low-energy Lagrangian. This Lagrangian can contain dimension-four gauge-invariant Higgs interactions that violate supersymmetry (SUSY). The wrong-Higgs Yukawa couplings generated by one-loop radiative corrections are a well-known example of this phenomenon. In this paper, we examine gauge-invariant gaugino-higgsino-Higgs boson interactions that violate supersymmetry. Such wrong-Higgs gaugino couplings can be generated in models of gauge-mediated SUSY-breaking in which some of the messenger fields couple to the MSSM Higgs bosons. In regions of parameter space where the messenger scale is low and tan{beta} is large, these hard SUSY-breaking operators yield tan{beta}-enhanced corrections to tree-level supersymmetric relations in the chargino and neutralino sectors that can be as large as 56%. We demonstrate how physical observables in the chargino sector can be used to isolate the tan{beta}-enhanced effects derived from the wrong-Higgs gaugino operators.
- OSTI ID:
- 21205108
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 11; Other Information: DOI: 10.1103/PhysRevD.77.115011; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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