Speaker
Dr
Farinaldo Queiroz
(University of California Santa Cruz)
Description
The Planck and WMAP9 satellites, as well as the ATACAMA and South Pole telescopes, have recently presented results on the angular power spectrum of the comic microwave background. Data tentatively point to the existence of an extra radiation component in the early universe. Here, we show that this extra component can be mimicked by dark matter particles whose majority is cold, but with a small fraction being non-thermally produced in a relativistic state. We present a supersymmetric example where this scenario is explicitly
realized, and explore the relevant parameter space consistent with BBN, CMB and Structure Formation bounds.
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Primary author
Dr
Farinaldo Queiroz
(University of California Santa Cruz)
