Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-07-26
Phys.Rev. D67 (2003) 035004
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 6 figures. Version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.67.035004
The observation of charged lepton flavor non-conservation would be a clear signature of physics beyond the Standard Model. In particular, supersymmetric (SUSY) models introduce mixings in the sneutrino and the charged slepton sectors which could imply flavor-changing processes at rates accessible to upcoming experiments. In this paper we analyze the possibility to observe Z --> lep_I lep_J in the GigaZ option of TESLA at DESY. We show that although models with SUSY masses above the current limits could predict a branching ratio BR(Z --> mu e) accessible to the experiment, they would imply an unobserved rate of mu --> e gamma and thus are excluded. In models with a small mixing angle between the first and the third (or the second and the third) slepton families GigaZ could observe Z --> tau mu (or Z --> tau e) consistently with present bounds on lep_J --> lep_I gamma. In contrast, if the mixing angles between the three slepton families are large the bounds from mu --> e gamma push these processes below the reach of GigaZ. We show that in this case the masses of the three slepton families must be strongly degenerated (with mass differences of order 10^{-3}). We update the limits on the slepton mass insertions delta_{LL,RR,LR} and discuss the correlation between flavor changing and g_mu-2 in SUSY models.
Illana Jose Ignacio
Masip Manuel
No associations
LandOfFree
Lepton Flavor Violation in Z and Lepton Decays in Supersymmetric Models 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 Lepton Flavor Violation in Z and Lepton Decays in Supersymmetric Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lepton Flavor Violation in Z and Lepton Decays in Supersymmetric Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-111119