Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$

Details Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$ Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$

2001-09-18

arxiv.org/abs/hep-ph/0109154v1

Phys.Rev. D65 (2002) 043511

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, LaTeX, 5 figures

Scientific paper

10.1103/PhysRevD.65.043511

We study the supersymmetric leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$ symmetry. We find that the resultant baryon asymmetry is enhanced compared with the case without a gauged $U(1)_{B-L}$ symmetry. The baryon asymmetry is proportional to the reheating temperature of inflation, but it is independent of the gravitino mass. If high reheating temperatures of inflation $T_{R}\sim 10^{10}\GEV$ are available, the mass of the lightest neutrino, $m_{\nu 1}\sim 10^{-4}\EV$, is small enough to explain the baryon asymmetry in the present universe. Furthermore, the gravitino mass independence of the produced baryon asymmetry allows us to explain the present baryon asymmetry even in low energy SUSY breaking scenarios such as gauge-mediation models. Our leptogenesis scenario is also very special in the sense that it is completely free from the serious Q-ball formation problem.

Affiliated with

Also associated with

No associations

Rating

Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$ 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 Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leptogenesis via $LH_{u}$ flat direction with a gauged $U(1)_{B-L}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-424947