Supernova bounds on supersymmetric R-parity violating interactions
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Nunokawa, Hiroshi; Rossi, Anna; Furtado Valle, José Wagner
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Aquest document és un/a article, creat/da en: 1996
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We re-examine resonant massless-neutrino conversions in a dense medium induced by flavour changing neutral current (FCNC) interactions. We show how the observed ν¯e energy spectra from SN1987a and the supernova r-process nucleosynthesis provide constraints on supersymmetric models with R parity violation, which are much more stringent than those obtained from the laboratory. We also suggest that resonant massless-neutrino conversions may play a positive role in supernova shock reheating. Finally, we examine the constraints on explicit R-parity-violating FCNCs in the presence of non-zero neutrino masses in the eV range, as indicated by present hot dark matter observations. |
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