Sommerfeld Enhancement from Unparticle Exchange for Dark Matter Annihilation

Details Sommerfeld Enhancement from Unparticle Exchange for Dark Matter Annihilation Sommerfeld Enhancement from Unparticle Exchange for Dark Matter Annihilation

2009-09-10

arxiv.org/abs/0909.1878v2

Phys.Lett.B687:232-235,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

New version published in PLB687(2010)232

Scientific paper

10.1016/j.physletb.2010.03.054

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}).

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