Artículos de revistas
Gamma-ray bursts and the relevance of rotation-induced neutrino sterilization
Registro en:
Physics Letters B. Elsevier Science Bv, v. 719, n. 41763, n. 218, n. 219, 2013.
0370-2693
WOS:000315316900003
10.1016/j.physletb.2013.01.053
Autor
Ahluwalia, DV
Lee, CY
Institución
Resumen
A la Pontecorvo when one defines electroweak flavour states of neutrinos as a linear superposition of mass eigenstates one ignores the associated spin. If, however, there is a significant rotation between the neutrino source, and the detector, a negative helicity state emitted by the former acquires a non-zero probability amplitude to be perceived as a positive helicity state by the latter. Both of these states are still in the left-Weyl sector of the Lorentz group. The electroweak interaction cross sections for such helicity-flipped states are suppressed by a factor of (m(v)/E-v)(2), where m(v) is the expectation value of the neutrino mass, and E-v is the associated energy. Thus, if the detecting process is based on electroweak interactions, and the neutrino source is a highly rotating object, the rotation-induced helicity flip becomes very significant in interpreting the data. The effect immediately generalizes to anti-neutrinos. Motivated by these observations we present a generalization of the Pontecorvo formalism and discuss its relevance in the context of recent data obtained by the IceCube neutrino telescope. (c) 2013 Elsevier B.V. All rights reserved. 719 41763 218 219