Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-01-23
Phys.Rev. D65 (2002) 093018
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 9 figures
Scientific paper
10.1103/PhysRevD.65.093018
In many models of CP violation, the electric dipole moment (EDM) of a heavy charged or neutral lepton could be very large. We present an explicit model in which a heavy neutrino EDM can be as large as $10^{-16}$ e-cm, or even a factor of ten larger if fine-tuning is allowed, and use an effective field theory argument to show that this result is fairly robust. We then look at the production cross section for these neutrinos, and by rederiving the Bethe-Block formula, show that they could leave an ionization track. It is then noted that the first signature of heavy neutrinos with a large EDM would come from $e^+e^-\to \bar{N}N\gamma$, leading to a very large rate for single photon plus missing energy events, and the rate and angular distribution are found. Finally, we look at some astrophysical consequences, including whether these neutrinos could constitute the UHE cosmic rays and whether their decays in the early universe could generate a net lepton asymmetry.
Nie Shuquan
Sher Marc
No associations
LandOfFree
Large Electric Dipole Moments of Heavy Neutrinos 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 Large Electric Dipole Moments of Heavy Neutrinos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large Electric Dipole Moments of Heavy Neutrinos will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-153631