# Signatures of chiral symmetry restoration in dilepton production

## TL;DR

This paper investigates how chiral symmetry restoration at finite density affects dilepton production, revealing spectral modifications and potential experimental signatures in heavy-ion collisions.

## Contribution

It introduces the effects of chiral mixing on the vector spectral function and dilepton rates, highlighting observable signatures of chiral symmetry restoration.

## Key findings

- Multiple peaks appear in the spectral function near meson masses.
- Enhanced dilepton production around the $
ho$, $ ext{ω}$, and $ ext{φ}$ mesons.
- Signature of partial chiral symmetry restoration in heavy-ion collisions.

## Abstract

We study the structural change of the vector spectral function and integrated production rates of dileptons in the presence of the chiral mixing induced exclusively at finite density. The mixing produces multiple bumps and peaks around the vacuum masses of the $\rho, \omega$ and $\phi$ resonances in the spectral function. The arising modification becomes pronounced when the mass difference between parity partners decreases. In particular, the emergent enhancement around the vacuum $\phi$ meson in the production rates serves as an excellent signature of the partially-restored chiral symmetry in heavy-ion collisions.