Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-10-17
Phys.Lett.B520:263-268,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, REVTEX. Discussions on multi-flavor mixing added
Scientific paper
10.1016/S0370-2693(01)01136-4
We point out that neutrino events observed at Kamiokande and IMB from SN1987A disfavor the neutrino oscillation parameters preferred by the LSND experiment. For $\Delta m^2 > 0$ (the light side), the electron neutrinos from the neutronization burst would be lost, while the first event at Kamiokande is quite likely to be due to an electron neutrino. For $\Delta m^2 < 0$ (the dark side), the average energy of the dominantly $\bar{\nu}_e$ events is already lower than the theoretical expectations, which would get aggravated by a complete conversion from $\bar{\nu}_\mu$ to $\bar{\nu}_e$. If taken seriously, the LSND data are disfavored independent of the existence of a sterile neutrino. A possible remedy is CPT violation, which allows different mass spectra for neutrinos and anti-neutrinos and hence can accommodate atmospheric, solar and LSND data without a sterile neutrino. If this is the case, Mini-BooNE must run in $\bar{\nu}$ rather than the planned $\nu$ mode to test the LSND signal. We speculate on a possible origin of CPT violation.
Murayama Hitoshi
Yanagida Takayuki
No associations
LandOfFree
LSND, SN1987A, and CPT Violation 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 LSND, SN1987A, and CPT Violation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LSND, SN1987A, and CPT Violation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-34644