Nonleading radiative contributions to low-energy N=1 supergravity theories

Details Nonleading radiative contributions to low-energy N=1 supergravity theories Nonleading radiative contributions to low-energy N=1 supergravity theories

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..33..215d&link_type=abstract

Physical Review D (Particles and Fields), Volume 33, Issue 1, 1 January 1986, pp.215-221

Physics

8

Supergravity, Spontaneous Breaking Of Gauge Symmetries, Supersymmetry

Scientific paper

Radiative contributions to the low-energy effective potential are presented in the neutral-Higgs-boson sector in the dimensional-transmutation scenario for which the lightest Higgs boson is massless at the tree level. Their possible role in breaking the local electroweak gauge symmetries is discussed. Predictions for the radiatively induced mass mR of the neutral scalar Higgs particles are given for models with three- and four-particle generations. Typically, for three generations mR<~6 GeV while for a fourth generation with equal up- and down-quark masses &, &<=90 GeV dictated by a theoretically plausible realization of the radiative symmetry breaking. For a nondegenerate fourth generation &), we find mR<~11 GeV. In all cases it is found that there is no lower bound on mR, in contrast with the Weinberg-Linde result for the nonsupersymmetric standard theory.

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