Volume 84, Number 4, November 2008
Article Number 41001
Number of page(s) 4
Section The Physics of Elementary Particles and Fields
Published online 14 November 2008
EPL, 84 (2008) 41001
DOI: 10.1209/0295-5075/84/41001

Neutrino orbital angular momentum in a plasma vortex

J. T. Mendonça1 and B. Thidé2

1   IPFN and CFIF, Instituto Superior Técnico - 1049-001 Lisboa, Portugal, EU
2   Swedish Institute of Space Science, Angstrom Laboratory - P.O. Box 537, SE-571 21 Uppsala, Sweden, EU

received 15 September 2008; accepted in final form 16 October 2008; published November 2008
published online 14 November 2008

It is shown that an electron-neutrino beam, propagating in a background plasma, can be decomposed into orbital momentum (OAM) states, similar to the OAM photon states. Coupling between different OAM neutrino states, in the presence of a plasma vortex, is considered. We show that plasma vorticity can be transfered to the neutrino beam, which is relevant to the understanding of the neutrino sources in astrophysics. Observation of neutrino OAM states could eventually become possible.

13.15.+g - Neutrino interactions.

© EPLA 2008