Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-11-27
JHEP0502:025,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 4 figures
Scientific paper
10.1088/1126-6708/2005/02/025
To embed the seesaw mechanism in the MSSM, two or three right-handed neutrino supermultiplets, $N_i$, have to be added to the model. In the presence of these new superfields, the soft supersymmetry breaking potential includes a lepton number violating mass term which is known as the neutrino $B$-term, $M B_\nu\tilde{N}\tilde{N}/2$. In this paper, we study the effects of $B_\nu$ on the Higgs mass parameters. Using the condition for the electroweak symmetry breaking, we derive an upper bound on $B_\nu$ which is two orders of magnitude stronger than the previous bounds. We also propose a simple model in which it is natural to have large values of $B_\nu$ while the rest of the supersymmetry breaking terms are at the TeV scale or smaller.
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