https://doi.org/10.1140/epjc/s10052-011-1688-0
Regular Article - Theoretical Physics
Direct and indirect detection of dark matter in D 6 flavor symmetric model
1
National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn, 10143, Estonia
2
Niigata University, Department of Physics, Niigata, 950-2181, Japan
3
Akita Highschool, Tegata-Nakadai 1, Akita, 010-0851, Japan
4
Centre for Theoretical Physics, The British University in Egypt, El Sherouk City, 11837, P.O. Box 43, Egypt
5
School of Physics, KIAS, Seoul, 130-722, Korea
6
Institute for Theoretical Physics, Kanazawa University, Kanazawa, 920-1192, Japan
7
Max-Planck-Institut für Kernphysik, Postfach 103980, 69029, Heidelberg, Germany
* e-mail: kajiyama@muse.sc.niigata-u.ac.jp
Received:
9
April
2011
Revised:
4
June
2011
Published online:
19
August
2011
We study fermionic dark matter in a non-supersymmetric extension of the standard model with a family symmetry based on 
. In our model, the final state of the dark matter annihilation is determined to be e
+
e
− by the flavor symmetry, which is consistent with the PAMELA result. At first, we show that our dark matter mass should be within the range of 230 GeV–750 GeV in the WMAP analysis combined with μ→eγ constraint. Moreover, we simultaneously explain the experiments of direct and indirect detection, by simply adding a gauge and D
6 singlet real scalar field. In the direct detection experiments, we show that the lighter dark matter mass ≃230 GeV and the lighter standard model Higgs boson ≃115 GeV are in favor of the observed bounds reported by CDMS II and XENON100. In the indirect detection experiments, we explain the positron excess reported by PAMELA through the Breit–Wigner enhancement mechanism. We also show that our model is consistent with there being no antiproton excess, as suggested by PAMELA.
© Springer-Verlag / Società Italiana di Fisica, 2011
