Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino

Details Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phlb..266..425d&link_type=abstract

Physics Letters B, Volume 266, Issue 3-4, p. 425-430.

Physics

5

Scientific paper

Recent experiments suggest that vτ may be a pseudo-Dirac neutrino with mvτ~ 17 keV. If such a neutrino is to be consistent with constraints from nucleosynthesis, then the mass difference between its two Majorana components should be extremely small. If it is small enough because of see-saw suppression then, in the absence of fine-tuning or additional symmetries, one needs to give up the MSW solution for the solar neutrino problem and the singlet majoron solution for the energy density problem. Thus, additional symmetries that can make vτ an almost exact Dirac neutrino should be sought. Also, the distance required for vτ to oscillate into its sterile Dirac partner becomes unobservably large.
Supported in part by the Israel Commission for Basic Research and the United States-Israel Binational Science Foundation.

Affiliated with

Also associated with

No associations

Rating

Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological and astrophysical constraints on a pseudo-Dirac tau neutrino will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1307018