Recent Interests on Positron, Positronium and Antimatters

TL;DR

This paper surveys recent advances in antimatter physics, including positron, positronium, and antihydrogen, highlighting experimental progress and ongoing efforts to test fundamental physics theories.

Contribution

It provides a comprehensive overview of recent experimental achievements and developments in antimatter research, emphasizing the observation and confinement of antihydrogen.

Findings

Positron was the first antiparticle observed.

Positronium and bi-positronium molecules have been experimentally observed.

Antihydrogen has been produced and confined in laboratory settings.

Abstract

A brief survey is made to highlight the recent interests in positron, positronium and antimatter physics. Positron is the first antiparticle observed which was predicted by Dirac. Positronium is itself its antiparticle and bi-positronium molecule is recently observed in laboratory which was predicted by Wheeler. The simplest antiatom i.e. antihydrogen is observed in the laboratory and the process to achieve the stable confinement of antihydrogen within the trap are in progress to test the standard model.