@misc{10481/49233,
year = {2015},
month = {12},
url = {http://hdl.handle.net/10481/49233},
abstract = {We discuss the production of a class of heavy sterile neutrinos nu(h) in proto-neutron stars. The neutrinos, of mass around 50 MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a magnetic dipole moment mu approximate to 10(-6) GeV-1 implies that they are thermally produced through e(+)e(-) -> (nu) over bar (h)nu(h) in the early phase of the core collapse, whereas a heavy-light transition moment mu(tr) approximate to 10(-8) GeV-1 allows their decay nu(h) -> nu i gamma with a lifetime around 10(-3) s. This type of electromagnetic couplings has been recently proposed to explain the excess of electron-like events in baseline experiments. We show that the production and decay of these heavy neutrinos would transport energy from the central regions of the star to distances d approximate to 400 km, providing a very efficient mechanism to enhance the supernova shock front and heat the material behind it.},
organization = {Open Access funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle Physics.},
organization = {This work has been supported by MINECO of Spain (FPA2013-47836, FIS2012-30926) and Consolider-IngenioMul-tidarkCSD2009-00064) and by Junta de Andalucía (FQM225, FQM101,3048).},
publisher = {Elsevier},
keywords = {Neutrinos},
keywords = {Proto-neutron stars},
keywords = {Energy},
title = {Production of unstable heavy neutrinos in proto-neutron stars},
doi = {10.1016/j.physletb.2015.10.026},
author = {Albertus Torres, Conrado and Masip Mellado, Manuel and Pérez-García, María de los Ángeles},
}