Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-01-12
Physics
High Energy Physics
High Energy Physics - Phenomenology
29 pages; v2, references added
Scientific paper
The observational relation between the density of baryon and dark matter in the Universe, $\Omega_{\rm DM}/\Omega_B\simeq 5$, is one of the most difficult problems to solve in modern cosmology. We discuss a scenario that explains this relation by combining the asymmetric dark matter scenario and the spontaneous baryogenesis associated with the flat direction in the supersymmetric standard model. A part of baryon asymmetry is transferred to charge asymmetry $D$ that dark matter carries, if a symmetry violating interaction that works at high temperature breaks not only $B-L$ but also $D$ symmetries simultaneously. In this case, the present number density of baryon and dark matter can be same order if the symmetric part of dark matter annihilates sufficiently. Moreover, the baryon number density can be enhanced as compared to that of dark matter if another $B-L$ violating interaction is still in thermal equilibrium after the spontaneous genesis of dark matter, which accommodates a TeV scale asymmetric dark matter model.
Kamada Kohei
Yamaguchi Masahide
No associations
LandOfFree
Asymmetric Dark Matter from Spontaneous Cogenesis in the Supersymmetric Standard Model 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 Asymmetric Dark Matter from Spontaneous Cogenesis in the Supersymmetric Standard Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asymmetric Dark Matter from Spontaneous Cogenesis in the Supersymmetric Standard Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-153234