Squeezed spectra and elliptic flow of bosons and anti-bosons with in-medium mass splitting

TL;DR

This paper investigates how in-medium mass splitting between bosons and anti-bosons affects their spectra and elliptic flow, revealing potential observable differences that depend on rapidity and mass splitting magnitude.

Contribution

It introduces a detailed analysis of the effects of in-medium mass splitting on boson and anti-boson observables, highlighting how these effects vary with rapidity and mass splitting.

Findings

Mass splitting causes separation in transverse momentum spectra.

Mass splitting leads to divergence in elliptic flow between bosons and anti-bosons.

Effect magnitude increases with larger in-medium mass splitting.

Abstract

We study the impact of the in-medium mass splitting between bosons and anti-bosons on their spectra and elliptic flow. The in-medium mass splitting may cause a separation in the transverse momentum spectra, as well as a division in the elliptic flow between bosons and anti-bosons. The magnitude of this effect becomes greater as the in-medium mass splitting increases. With the increasing rapidity, the splitting effect of the spectra increases and the splitting effect of the elliptic flow decreases. These phenomena may provide a way to differentiate whether the influences on boson and anti-boson in the medium are consistent.