Sommerfeld Enhancement from Unparticle Exchange for Dark Matter Annihilation
High Energy Physics - Phenomenology
2010-04-14 v2
Abstract
We investigate the implication of unparticle exchange for the possible Sommerfeld enhancement in dark matter annihilation process. Assuming the unparticle exchange during WIMP collision, we solve the Schr\rm\ddot{o}dinger equation for the effective potential, and find that the Sommerfeld enhancement factor is dictated by the scale dimension of unparticle as 1/v^{3-2d_{\UP}}. Numerically the Sommerfeld enhancement could be {\cal O}(10-10^{3}).
Keywords
Cite
@article{arxiv.0909.1878,
title = {Sommerfeld Enhancement from Unparticle Exchange for Dark Matter Annihilation},
author = {Chuan-Hung Chen and C. S. Kim},
journal= {arXiv preprint arXiv:0909.1878},
year = {2010}
}
Comments
New version published in PLB687(2010)232