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Thursday, October 11, 2018
1:00 PM - 2:00 PM
CNLS Conference Room (TA-3, Bldg 1690)


Exploring the Mystery of Dark Matter with ADMX

Rakshya Khatiwada

Very few mysteries in our current picture of the universe are bigger than the puzzle of dark matter. Recently the QCD axion -- a weakly interacting, sub-eV particle -- has been in the limelight as a cold dark matter candidate which also enjoys compelling theoretical motivation as a possible solution to the strong CP problem. This talk will give an overview of modern axion searches along with a detailed discussion of the most sensitive experiment to probe the QCD axion to date, ADMX. In particular, I will focus on ADMX's recent success in reaching the so-called DFSZ sensitivity -- a decade long goal sought by axion experimenters -- and its newest limits covering axion mass ranges of 2.66 to 2.81 μeV. The limits ADMX has placed in this range have crucial implications for the future direction of on-going dark matter searches as I will outline.

Host: Jonas Lippuner