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Joint Theory Seminar: Raymond Co

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Joint Theory Seminar Speaker: Raymond Co (U of Michigan)
Email: rtco@umich.edu
Title: Dark Photon Dark Matter Produced from Axion Oscillations
Host: Chris Verhaaren 
Room: 432
Abstract:Many experimental efforts have been devoted to searching for dark photon dark matter. However, the currently known production mechanisms face various difficulties, including a limited dark photon mass range. It is therefore of interest to explore alternative sources of dark photons with broader mass ranges. We propose a new production mechanism via tachyonic instability- the exponential growth of dark photons resulting from an axion-like particle’s coherent oscillation. We demonstrate viable cosmological histories for dark photon dark matter with masses down to 10^-6 eV. We also discuss the collider and direct detection signatures of the Peccei-Quinn charged fermions and dark photons respectively.

Location Physics 432
Date Mon, October 15, 2018
Time 1:30pm-3:00pm PDT
Duration 1 hour 30 minutes
Access Public
Created by High-Energy Seminars
Updated Tue, September 18, 2018 2:27pm PDT
Send Reminder Yes  -  3 days 0 hour 0 minutes before start

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