Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-11-26
Phys.Rev. D67 (2003) 053004
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 3 eps figures
Scientific paper
10.1103/PhysRevD.67.053004
We hunt for and discuss manifestly CP-violating effects which are mediated by Majorana phases. These phases are present if the Standard Model neutrinos are Majorana particles. We argue that while Majorana phases do affect the strength of neutrinoless double beta decay (a well known fact), they do so in a way that involves no manifest violation of CP. The conditions for manifestly CP-violating phenomena -- differences between the rates for CP-mirror-image processes -- are presented, and three examples are discussed: (i) neutrino-antineutrino oscillation; (ii) rare decays of K and B mesons and their antiparticles and (iii) the lepton asymmetry generated by the decay of hypothetical very heavy right-handed "see-saw" neutrinos. We also find that, for the case of degenerate light neutrinos, manifestly CP-violating effects in neutrino-antineutrino oscillation vanish, although flavor-changing transitions do not. Finally, we comment on leptogenesis with degenerate right-handed neutrinos, and contrast it to the neutrino-antineutrino oscillation case.
Gouvea Andre de
Kayser Boris
Mohapatra Rabindra
No associations
LandOfFree
Manifest CP Violation from Majorana Phases 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 Manifest CP Violation from Majorana Phases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manifest CP Violation from Majorana Phases will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-140486