Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-04-26
Phys.Rev. D66 (2002) 023508
Physics
High Energy Physics
High Energy Physics - Phenomenology
20pages, latex2e, comments and references added, to appear in PRD
Scientific paper
10.1103/PhysRevD.66.023508
In generic models for grand unified theories(GUT), various types of baryon number violating processes are expected when quarks and leptons propagate in the background of GUT strings. On the other hand, in models with large extra dimensions, the baryon number violation in the background of a string is not trivial because it must depend on the mechanism of the proton stabilization. In this paper we argue that cosmic strings in models with extra dimensions can enhance the baryon number violation to a phenomenologically interesting level, if the proton decay is suppressed by the mechanism of localized wavefunctions. We also make some comments on baryogenesis mediated by cosmological defects. We show at least two scenarios will be successful in this direction. One is the scenario of leptogenesis where the required lepton number conversion is mediated by cosmic strings, and the other is the baryogenesis from the decaying cosmological domain wall. Both scenarios are new and have not been discussed in the past.
No associations
LandOfFree
Baryon number violation, baryogenesis and defects with extra dimensions 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 Baryon number violation, baryogenesis and defects with extra dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Baryon number violation, baryogenesis and defects with extra dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-397340