RT Journal Article
T1 Production of unstable heavy neutrinos in proto-neutron stars
A1 Albertus Torres, Conrado
A1 Masip, M.
A1 Pérez García, M. A.
AB We discuss the production of a class of heavy sterile neutrinos νhνh in proto-neutron stars. The neutrinos, of mass around 50 MeV50 MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a magnetic dipole moment μ≈10−6 GeV−1μ≈10−6 GeV−1 implies that they are thermally produced through View the MathML sourcee+e−→ν¯hνh in the early phase of the core collapse, whereas a heavy–light transition moment μtr≈10−8 GeV−1μtr≈10−8 GeV−1 allows their decay νh→νiγνh→νiγ with a lifetime around 10−3 s10−3 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≈400 kmd≈400 km, providing a very efficient mechanism to enhance the supernova shock front and heat the material behind it.
PB Elsevier
SN 0370-2693
SN 1873-2445 (electrónico)
YR 2015
FD 2015
LK http://hdl.handle.net/10272/12063
UL http://hdl.handle.net/10272/12063
LA eng
NO Albertus Torres, C., Masip, M., Pérez García, M.A.: "Production of unstable heavy neutrinos in proto-neutron stars". Physics Letters B. Vol. 751, págs. 209-214, (2015). DOI: 10.1016/j.physletb.2015.10.026
NO We would like to thank T. Fischer and J. Pons for useful discussions.This work has been supported by MINECO of Spain (FPA2013-47836,FIS2012-30926) and Consolider-Ingenio Multidark CSD2009-00064) and by Junta de Andalucía (FQM225,FQM101,3048)
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026