Quantum Simulations of Dark Sector Showers

TL;DR

This paper performs quantum simulations of dark sector showers involving dark photons and fermions, revealing significant differences from classical models and potential collider signals.

Contribution

It introduces fully quantum simulations of dark sector jets, highlighting quantum interference effects and flavor-dependent enhancements in dark photon emissions.

Findings

Quantum simulations differ from classical predictions in photon counting distributions.

Large flavor numbers lead to increased dark photon emissions.

Potential collider signals can distinguish these dark sector scenarios.

Abstract

We consider dark sector scenarios where dark matter is accompanied by a dark photon and multiple-flavor dark fermions charged under the dark gauge group. We study quantum interference effects in dark sector jets, where multiple dark photons are emitted from high-energy dark fermions. We perform fully quantum simulations of dark sector showers and compare the results against those of the classical Monte-Carlo simulations. We find important differences in probability distributions of dark photon countings between quantum and classical computations. When the number of dark-fermion flavors is large, we find significant enhancements in large numbers of dark photon emissions. Such enhancements can provide distinguishing signals for our scenarios at particle colliders.