Kavli Affiliate: Jia Liu
| First 5 Authors: Jinhui Guo, Yuxuan He, Jia Liu, Xiao-Ping Wang, Ke-Pan Xie
| Summary:
The ultralight boson represents a promising dark matter candidate exhibiting
unique wave-like behaviors. These properties could transfer to the dark
mediator, such as the kinetic mixing dark photon, which can be a link between
the dark and Standard Model sectors, resulting in periodic oscillations of its
mass. We propose a method to detect ultralight dark matter using dark mediators
in collider and beam dump experiments, distinguishing it from conventional
atomic, molecular, and optical methods. The time-varying nature of dark
mediator mass exhibits a double-peak spectrum, reducing traditional constraints
by 1 to 2 orders of magnitude, due to decreased luminosity exposure in each
resonant mass bin. To enhance sensitivity, we utilize event time-stamps in the
CMS Open Data and demonstrate that this technique boosts sensitivity by
approximately one order of magnitude compared to the time-blind method.
Moreover, it proves effective in detecting the invisible decay of the dark
mediator.
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