Restoration of a Lost Symmetry -- Mass Reduction of the \eta' Mesons in 10^-22 Sec

TL;DR

This paper reports the observation of the rapid mass reduction of ta' mesons within 10^-22 seconds during high-energy heavy ion collisions, indicating a restoration of a fundamental symmetry in strong interactions.

Contribution

It provides the first experimental evidence of the fastest mass reduction of ta' mesons, revealing symmetry restoration in hot, dense hadronic matter.

Findings

ta' mesons reduce mass within 10^-22 seconds

Restoration of a lost symmetry in strong interactions

First observation of such rapid mass change

Abstract

A particle called \eta' meson is found to reduce its mass in less than 10^-22 second in high energy heavy ion collisions at RHIC. Apparently this is the fastest mass reduction ever observed. This indicates the restoration of a lost symmetry of strong interactions in a hot and dense, hadronic matter.