# EPS-HEP2021 conference

Jul 26 – 30, 2021
Zoom
Europe/Berlin timezone

## Search for self-interacting dark matter with the BABAR detector

Jul 30, 2021, 10:10 AM
20m
Zoom

#### Zoom

Parallel session talk Dark Matter

### Speaker

Prof. Gerald Eigen (University of Bergen)

### Description

A new class of dark matter models introduces a dark sector with new Dirac fermions charged under an additional U(1) gauge group. The corresponding gauge boson, the dark photon $A'$, has a MeV-GeV mass and couples to the Standard Model photon (and Z) via kinetic mixing. Fermionic bound states ("darkonium" $\Upsilon_D$) could form if the dark sector coupling constant is strong enough. We present a search for dark sector bound states ($\Upsilon_D$) in $e^{+}e^{-}\to \gamma \Upsilon_{D}$, $\Upsilon_{D}\to A'A'A'$, $A'\to X^{+}X^{-}$ $(X=e, \mu, \pi)$ decays for $0.02~\text{GeV} \leq m_{A'} \leq 1.0~\text{GeV}$, $1~\text{GeV} \leq m_{\Upsilon_D} \leq 10~\text{GeV}$ using the full data sample collected by the $BABAR$ detector.

Collaboration / Activity BaBar

### Primary author

Prof. Gerald Eigen (University of Bergen)