Anomalous U(1) symmetry and lepton flavor violation

Details Anomalous U(1) symmetry and lepton flavor violation Anomalous U(1) symmetry and lepton flavor violation

2003-08-08

arxiv.org/abs/hep-ph/0308093v2

Nucl.Phys. B678 (2004) 233-257

Physics

High Energy Physics

High Energy Physics - Phenomenology

References added, typos corrected, 28 pages LaTeX, includes 14 eps figures

Scientific paper

We show that in a large class of models based on anomalous U(1) symmetry which addresses the fermion mass hierarchy problem, leptonic flavor changing processes are induced that are in the experimentally interesting range. The flavor violation occurs through the renormalization group evolution of the soft SUSY breaking parameters between the string scale and the U(1)_A breaking scale. We derive general expressions for the evolution of these parameters in the presence of higher dimensional operators. Several sources for the flavor violation are identified: flavor-dependent contributions to the soft masses from the U(1)_A gaugino, scalar mass corrections proportional to the trace of U(1)_A charge, non-proportional A-terms from vertex corrections, and the U(1)_A D-term. Quantitative estimates for the decays \mu -> e \gamma and \tau -> \mu \gamma are presented in supergravity models which accommodate the relic abundance of neutralino dark matter.

Affiliated with

Also associated with

No associations

Rating

Anomalous U(1) symmetry and lepton flavor 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 Anomalous U(1) symmetry and lepton flavor violation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous U(1) symmetry and lepton flavor violation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-616516