Bulk neutrinos and core collapse supernovae

Details Bulk neutrinos and core collapse supernovae Bulk neutrinos and core collapse supernovae

2002-09-05

arxiv.org/abs/hep-ph/0209063v2

Phys.Rev. D67 (2003) 053001

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 5 eps figures; v2: minor comments and references added, version to appear on Phys.Rev.D

Scientific paper

10.1103/PhysRevD.67.053001

We discuss the phenomenology of neutrino mixing with bulk fermions in the context of supernova physics. The constraints on the parameter space following from the usual energy loss argument can be relaxed by four orders of magnitude due to a feedback mechanism that takes place in a broad region of the parameter space. Such a mechanism also affects the protoneutron star evolution through a non trivial interplay with neutrino diffusion. The consistency with the SN 1987A signal is discussed, as well as the implications for deleptonization, cooling, composition of the neutrino flux and the delayed explosion scenario.

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