Abstract
We study implications of the recent results from the CDMS Collaboration on astrophysical probes of dark matter. By crossing symmetry an elastic scattering cross section with the nucleon implies annihilation of dark matter into hadrons inside the halo, resulting in an anti-proton flux that could be constrained by data from the PAMELA Collaboration if one includes a large boost factor necessary to explain the PAMELA excess in the positron fraction. As an illustration, we present a model-independent analysis for a fermionic dark matter and study the upper bound on the boost factor using the PAMELA anti-proton flux.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 73-76 |
| Number of pages | 4 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 691 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jul 2010 |
Funding
This work was supported in part by the US Department of Energy under grant numbers DE-AC02-06CH11357 , and DE-FG02-91ER40684 . Q.H.C. is supported in part by the Argonne National Laboratory and University of Chicago Joint Theory Institute (JTI) Grant 03921-07-137 , and by the US Department of Energy under Grants Nos. DE-AC02-06CH11357 and DE-FG02-90ER40560 . We thank H. Zhang for collaboration in the early stages of this work. We also wish to thank the organizers and the participants at the Chicagoland Theory Hobnob for a lively atmosphere where this work was initiated.
Keywords
- Dark matter
ASJC Scopus subject areas
- Nuclear and High Energy Physics