Ruling out large sneutrino vacuum expectation values

Minimal supersymmetric models can generate a large {tau} sneutrino vacuum expectation value (VEV). However, neutrino mass limits constrain the sneutrino VEV to be small ({l angle}{tilde {nu}}{sub {tau}}{r angle}{approx lt}10 GeV) unless the gaugino mass is unnaturally large ({ital M}{approx gt}1 TeV...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1990-09, Vol.42 (5), p.1860-1862
Hauptverfasser:	BRAHM, D. E, HALL, L. J, HSU, S. D. H
Format:	Artikel
Sprache:	eng
Schlagworte:	645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties 645300 - High Energy Physics- Particle Invariance Principles & Symmetries ELEMENTARY PARTICLES Exact sciences and technology EXPECTATION VALUE FERMIONS LEPTONS LIMITING VALUES MASS MASSLESS PARTICLES NEUTRINOS Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS REST MASS Statistical physics, thermodynamics, and nonlinear dynamical systems SUPERSYMMETRY SYMMETRY
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Zusammenfassung:	Minimal supersymmetric models can generate a large {tau} sneutrino vacuum expectation value (VEV). However, neutrino mass limits constrain the sneutrino VEV to be small ({l angle}{tilde {nu}}{sub {tau}}{r angle}{approx lt}10 GeV) unless the gaugino mass is unnaturally large ({ital M}{approx gt}1 TeV) or the Higgs-boson-Higgs-boson coupling is small ({vert bar}{mu}{vert bar}{approx lt}10 GeV). We show that the latter case is now ruled out by CERN LEP data and gluino mass limits.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.42.1860