Peccei-Quinn violating minimal supergravity and a 126 GeV Higgs
arXiv:1212.1708 · doi:10.1103/PhysRevD.87.035023
Abstract
In a Peccei-Quinn extension of supergravity the h --> γγdetection rate can be significantly enhanced due to the reduction of the total Higgs decay width. To assess the viability of various Peccei-Quinn extensions of minimal supergravity we perform a Bayesian analysis on three such scenarios. The main constraints on these models come from the currently observed Higgs boson like state by the Large Hadron Collider and from the WMAP observation of dark matter abundance. Our comparative study reveals that under these constraints the PQ violating scenarios with axino dark matter are clearly preferred over the minimal supegravity model with the lightest neutralino as a dark matter candidate.
9 LaTeX page, 5 Figures, 2 Tables, accepted version for publication in Physical Review D
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