Superluminal velocity through near-maximal neutrino oscillations or by being off shell

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), 045010-[13pp]. (doi:10.1088/0954-3899/39/4/045010).


[img] PDF (Off-shell OPERA neutrinos) - Author's Original
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[img] PDF (Superluminal group velocity through near-maximal neutrino oscillations) - Author's Original
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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/0954-3899/39/4/045010
ISSNs: 0954-3899 (print)
1361-6471 (electronic)
Subjects: Q Science > QC Physics
Divisions : Faculty of Physical Sciences and Engineering > Physics and Astronomy > Theoretical Partical Physics Group
ePrint ID: 339049
Accepted Date and Publication Date:
April 2012Published
Date Deposited: 22 May 2012 10:48
Last Modified: 31 Mar 2016 14:28

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