Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-06-07
Phys.Rev. D74 (2006) 063502
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 1 figure; minor changes
Scientific paper
10.1103/PhysRevD.74.063502
We examine non-thermal dark matter production from a late-decaying scalar field, with a particular attention on non-renormalizable operators of D=5 through which the scalar field decays into the standard model particles and their superpartners. We show that almost the same number of superparticles as that of particles are generally produced from the decay. To avoid the gravitino overproduction problem, the decay is favored to proceed via interactions with an intermediate cut-off scale M << M_P. This should be contrasted to the conventional scenario using the modulus decay. The bosonic supersymmetry partner of the axion, i.e., saxion, is proposed as a natural candidate for such late-decaying scalar fields. We find that a right amount of the wino/higgsino dark matter with a mass of O(100) GeV is obtained for the saxion mass around the weak scale and axion decay constant, F_A = O(10^{9-12}) GeV.
Endo Motoi
Takahashi Fuminobu
No associations
LandOfFree
Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale 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 Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-698152