Dark photon bursts from compact binary systems and constraints
Shaoqi Hou, Shuxun Tian, Shuo Cao, Zong‐Hong Zhu
Abstract
In this work, we consider the burst signal of the dark photon, the hypothetical vector boson of the $U(1{)}_{B}$ or $U(1{)}_{B\ensuremath{-}L}$ gauge group, generated by a compact binary star system. The absence of the signal in the laser interferometer puts bounds on the coupling constant $\ensuremath{\epsilon}$ to the ordinary matter. It turns out that if the dark photon is massless, ${\ensuremath{\epsilon}}^{2}$ is on the order of ${10}^{\ensuremath{-}37}--{10}^{\ensuremath{-}33}$ at most; in the massive case, the upper bound of ${\ensuremath{\epsilon}}^{2}$ is about ${10}^{\ensuremath{-}38}--{10}^{\ensuremath{-}31}$ in the mass range from ${10}^{\ensuremath{-}19}$ to ${10}^{\ensuremath{-}11}\text{ }\text{ }\mathrm{eV}$. These are the first bounds derived from the interferometer observations independent of the assumption of dark photons being dark matter.