PIRSA:11090111

Astrophysical Constraints on Dark Matter Annihilation with Sommerfeld Enhancement

Zavala Franco, J. (2011). Astrophysical Constraints on Dark Matter Annihilation with Sommerfeld Enhancement. Perimeter Institute. https://pirsa.org/11090111

Zavala Franco, Jesus. Astrophysical Constraints on Dark Matter Annihilation with Sommerfeld Enhancement. Perimeter Institute, Sep. 22, 2011, https://pirsa.org/11090111 

          @misc{ pirsa_PIRSA:11090111,
            doi = {10.48660/11090111},
            url = {https://pirsa.org/11090111},
            author = {Zavala Franco, Jesus},
            keywords = {Particle Physics},
            language = {en},
            title = {Astrophysical Constraints on Dark Matter Annihilation with Sommerfeld Enhancement},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {sep},
            note = {PIRSA:11090111 see, \url{https://pirsa.org}}
          }

Jesus Zavala Franco University of Iceland

DOI 10.48660/11090111
Collection
Talk Type Conference
Subject

Abstract

Dark matter models with an annihilation cross section enhanced by a Sommerfeld mechanism have been proposed in the past years to explain a number of observed anomalies, such as the excess of high energy positrons in cosmic rays reported by PAMELA. However, this enhancement can not be arbitrarily large without violating a number of astrophysical measurements. In this talk, I will discuss the degree to which these measurements can constrain Sommerfeld-enhanced models. In particular, I will talk about constraints coming from the observed abundance of dark matter and the extragalactic background light measured at multiple wavelengths.