Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-03-11
Phys.Rev.D49:12-15,1994
Physics
High Energy Physics
High Energy Physics - Phenomenology
12pages, 1 figure by PicTex, SNUTP 92-87
Scientific paper
10.1103/PhysRevD.49.12
We examine whether observable majoron emission in double beta decay can be compatible with the big-bang nucleosynthesis (NS) and the observed neutrino flux from SN1987A. It is found that the NS upper bound on $^4$He abundance implies that the majoron-neutrino Yukawa coupling constant $g\leq 9\times 10^{-6}$ and its maximal value is allowed only when the scalar quartic coupling constant $\lambda$ is extremely small, $\lambda\leq 100g^2$. It is also observed that, although quite less restrictive, SN1987A also provides independent constraints on coupling constants.
Chang Sanghyeon
Choi Kiwoon
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