Superluminal velocity through near-maximal neutrino oscillations or by being off shell
Superluminal velocity through near-maximal neutrino oscillations or by being off shell
Recently it was suggested that the observation of superluminal neutrinos by the OPERA collaboration may be due to group velocity effects resulting from close-to-maximal oscillation between neutrino mass eigenstates, in analogy to known effects in optics. We show that superluminal propagation does occur through this effect for a series of very narrow energy ranges, but this phenomenon cannot explain the OPERA measurement. Superluminal propagation can also occur if one of the neutrino masses is extremely small. However the effect only has appreciable amplitude at energies of order this mass and thus has negligible overlap with the multi-GeV scale of the experiment.
045010-[13pp]
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
April 2012
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
Morris, Tim R.
(2012)
Superluminal velocity through near-maximal neutrino oscillations or by being off shell.
Journal of Physics G: Nuclear and Particle Physics, 39 (4), .
(doi:10.1088/0954-3899/39/4/045010).
Abstract
Recently it was suggested that the observation of superluminal neutrinos by the OPERA collaboration may be due to group velocity effects resulting from close-to-maximal oscillation between neutrino mass eigenstates, in analogy to known effects in optics. We show that superluminal propagation does occur through this effect for a series of very narrow energy ranges, but this phenomenon cannot explain the OPERA measurement. Superluminal propagation can also occur if one of the neutrino masses is extremely small. However the effect only has appreciable amplitude at energies of order this mass and thus has negligible overlap with the multi-GeV scale of the experiment.
Text
1110.2463.pdf
- Author's Original
Text
1110.3266v3.pdf
- Author's Original
More information
Published date: April 2012
Organisations:
Theoretical Partical Physics Group
Identifiers
Local EPrints ID: 339049
URI: http://eprints.soton.ac.uk/id/eprint/339049
ISSN: 0954-3899
PURE UUID: 33ab39cc-c132-4e45-94dc-ab3ed79269a7
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Date deposited: 22 May 2012 10:48
Last modified: 15 Mar 2024 02:36
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