SciPost Submission Page
Muon Decay
by W. Fetscher
Submission summary
| Authors (as registered SciPost users): | Wulf Fetscher |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202106_00032v3 (pdf) |
| Date accepted: | July 15, 2021 |
| Date submitted: | July 6, 2021, 6:08 p.m. |
| Submitted by: | Wulf Fetscher |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | Review of Particle Physics at PSI (PSI2020) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Experimental, Phenomenological |
Abstract
The decay of the muon has been studied at PSI with several precision measurements: The longitudinal polarization PL(E) with the muon decay parameters ξ′, ξ′′, the Time- Reversal Invariance (TRI) conserving transverse polarization PT1(E) with the muon de- cay parameters η, η′′, the TRI violating transverse polarization PT2(E), with α′/A, β′/A and the muon decay asymmetry with Pμξ. The detailed theoretical analysis of all mea- surements of normal and inverse muon decay has led for the first time to a lower limit |g V | > 0.960 ("V − A") and upper limits for nine other possible complex couplings, espe- cially the scalar coupling |g S | < 0.550 which had not been excluded before.
Author comments upon resubmission
List of changes
It is now noted that the \Gamma^\gamma are either Dirac or Pauli matrices.
\noindent is used after Eq. (6.1)
Published as SciPost Phys. Proc. 5, 006 (2021)