Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1992-09-30
Nucl.Phys. B396 (1993) 243-260
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, CERN-TH 6656/92 DFPD 92/TH/43 SISSA-127/92 AP, 2 figures available upon e-mail request
Scientific paper
10.1016/0550-3213(93)90265-Q
We study the supersymmetrized version of the singlet majoron model and, performing an analysis of the renormalization group equation improved potential, we find that a spontaneous breaking of $R$-parity can be achieved for a wide range of the parameters. Studying the finite temperature effective potential, we show that the phase transition leading to $R$-parity breaking can be of the first order and can occur at temperatures below the weak scale, thus avoiding any constraint coming from the requirement of the preservation of the baryon asymmetry in the early Universe.
Giudice Gian F.
Masiero Antonio
Pietroni Massimo
Riotto Antonio
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