Active-sterile neutrino mixing in the absence of bare active neutrino mass

Details Active-sterile neutrino mixing in the absence of bare active neutrino mass Active-sterile neutrino mixing in the absence of bare active neutrino mass

2006-04-03

arxiv.org/abs/hep-ph/0604016v2

Nucl.Phys. B749 (2006) 153-171

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, no figures, 2 tables; v2: added the last two refs in item [17], to appear in NPB

Scientific paper

10.1016/j.nuclphysb.2006.05.014

We investigate a minimal extension of the standard model in which the only new ingredient is the sterile neutrinos. We do not introduce extra Higgs multiplets or high dimensional effective operators to induce mass terms for the active neutrinos, and the model is renormalizable in itself. We show for arbitrary numbers of generations and sterile neutrinos that the independent physical parameters in the leptonic sector are much less than previously anticipated. For instance, with three active and two sterile neutrinos, there are four mixing angles and three CP phases in addition to four non-vanishing neutrino masses. We study phenomenological implications for tritium beta decay, neutrinoless double beta decay and neutrino oscillations. For the most natural see-saw parameters, we find that it is difficult to accommodate in the model the best-fit values of masses and mixing parameters from oscillation data no matter whether we include or not the null short-baseline experiments together with the LSND result. This implies that if the LSND result is confirmed by MiniBooNE, the see-saw parameter region of the model with two sterile neutrinos could be largely excluded.

Affiliated with

Also associated with

No associations

Rating

Active-sterile neutrino mixing in the absence of bare active neutrino mass 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 Active-sterile neutrino mixing in the absence of bare active neutrino mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active-sterile neutrino mixing in the absence of bare active neutrino mass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-444102