Gu, Pei-Hong ; Sarkar, Utpal ; Zhang, Xinmin (2009) Visible and dark matter genesis and cosmic positron and electron excesses Physical Review D - Particles, Fields, Gravitation and Cosmology, 80 (7). 076003_1-076003_5. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v80/i7/e076003
Related URL: http://dx.doi.org/10.1103/PhysRevD.80.076003
Abstract
Dark and baryonic matter contribute comparable energy density to the present Universe. The dark matter may also be responsible for the cosmic positron/electron excesses. We connect these phenomena with Dirac seesaw for neutrino masses. In our model (i) the dark matter relic density is a dark matter asymmetry generated simultaneously with the baryon asymmetry so that we can naturally understand the coincidence between the dark and baryonic matter; (ii) the dark matter mostly decays into the leptons so that its decay can interpret the anomalous cosmic rays with positron/electron excesses.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 45443 |
Deposited On: | 28 Jun 2011 05:32 |
Last Modified: | 18 May 2016 01:42 |
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