Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-08-26
Phys.Lett. B413 (1997) 365-368
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, AmSTex, LaTex. The limits are revised for neutrino chemical potential $\mu$ = 0. The new limits do not differ signifi
Scientific paper
10.1016/S0370-2693(97)01129-5
If massless leptonic photons associated to electron, muon or tau leptonic number exist they would have been emitted from supernova 1987a via the annihilation process $\nu\bar{\nu}\to\gamma_{l}\gamma_{l}$. By requiring that this process does not carry away most of the energy that can be radiated by the supernova we obtain an upper limit on the leptonic photon coupling constants, $\alpha_{l} < 5.4 \times 10^{-11}$. Under certain assumptions about $\gamma_{l}$ - trapping conditions we find that the region of $\alpha_{l} = 10^{-8} - 10^{-7}$ might be of interest for an experimental search for leptonic photons.
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