Quaid-I-Azam University Team Models Positronium Decay For Weak Process Investigation
Researchers at Quaid-i-Azam University have calculated the weak decay rate of the positronium ion, a metastable bound state of electrons and a positron. This theoretical breakthrough provides new insights into three-body leptonic weak interactions and potential beyond-the-Standard-Model physics.
Why it matters
The study advances fundamental particle physics by providing precise calculations for rare decay pathways that were previously poorly understood.
A thorough investigation into a rarely studied decay pathway of the positronium ion, a bound state of two electrons and a positron, has been completed by Nishat Ul Sani and colleagues at Quaid-i-Azam University. They calculate the rate for the weak decay of positronium ion into an electron, muon neutrinos, and antineutrinos, a process mediated by a virtual Z boson. The findings sharply expand understanding of positronium decay mechanisms, revealing a branching ratio comparable to that of ortho-positronium’s weak decay and offering insights into fundamental particle interactions.
The article is a technical report on scientific research with no political or social agenda.
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