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Measurement of the transverse polarization of electrons emitted in neutron decay – nTRV experiment
by K. Bodek, A. Kozela
This is not the latest submitted version.
Submission summary
| Authors (as registered SciPost users): | Kazimierz Bodek |
| Submission information | |
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| Preprint Link: | scipost_202103_00021v1 (pdf) |
| Date submitted: | March 22, 2021, 3:56 p.m. |
| Submitted by: | Kazimierz Bodek |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | Review of Particle Physics at PSI (PSI2020) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
The two components of the transverse polarization of electrons ($\sigma_{T1}$ , $\sigma_T2$ ) emitted in the $\beta$-decay of polarized, free neutrons have been measured. The T-odd, P-odd correlation coefficient, $R$, quantifying $\sigma_T2$ , perpendicular to the neutron polarization and electron momentum, was found to be $0.004 \pm 0.012 \pm 0.005$. This value is consistent with time reversal invariance, and significantly improves limits on the relative strength of imaginary scalar couplings in the weak interaction. The value obtained for the correlation coefficient $N$, $0.067 \pm 0.011 \pm 0.004}, associated with $\sigma_{T1} , agrees with the Standard Model expectation, providing an important sensitivity test of the experimental setup.
Current status:
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2021-4-21 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202103_00021v1, delivered 2021-04-21, doi: 10.21468/SciPost.Report.2815
Strengths
Weaknesses
Report
Kozela et al., PRL102,172301(2009)
Kozela et al., PRC85,045501 (2012)
Bodek et al., EPJ Web Conf 219, 04001 (2019)
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