CPT-violating effects in muon decay

TL;DR

This paper investigates potential CPT-violating effects in muon decay, calculating lifetime differences and decay rate asymmetries to establish bounds and suggest new experimental constraints on CPT violation in charged leptons.

Contribution

It introduces a framework for analyzing CPT violation in muon decays and derives bounds on CPT-violating parameters from lifetime and decay rate measurements.

Findings

Bounds on CPT-violating parameters established

Decay rate asymmetries provide new constraints

Lifetime differences between muon and antimuon analyzed

Abstract

We consider low-energy CPT-violating modifications in charged current weak interactions and analyze possible ramifications in muon and antimuon decays. We calculate the lifetime of muon and antimuon with these modifications, and from the result, put bounds on the CPT-violating parameters. Moreover, we elaborate on the muon and antimuon decay rate differentials in electron energy and spatial angle, which entail interesting phenomenological consequences presenting new ways to constrain CPT violation in charged lepton decays.