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dc.contributor.authorAlbertus Torres, Conrado 
dc.contributor.authorMasip, M.
dc.contributor.authorPérez García, M. A.
dc.identifier.citationAlbertus 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.2015.10.026en_US
dc.identifier.issn1873-2445 (electrónico)
dc.description.abstractWe 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.en_US
dc.description.sponsorshipWe 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)
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleProduction of unstable heavy neutrinos in proto-neutron starsen_US

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