Search for a dark photon with the WASA detector at COSY

TL;DR

This paper reports on the search for a hypothetical dark photon (U boson) using data collected with the WASA detector at the COSY facility, aiming to detect signs of new physics beyond the Standard Model.

Contribution

First search for the U boson using the WASA detector at COSY, providing experimental constraints on dark photon properties.

Findings

No evidence of the dark photon was observed.

Set new upper limits on the kinetic mixing parameter.

Enhanced sensitivity compared to previous experiments.

Abstract

We present recent results on the search for the U boson based on the data collected by means of the WASA detector and the Cooler Synchrotron COSY.