Precise measurements of the decay of free neutrons

Dirk Dubbers; Bastian Märkisch

doi:10.1146/annurev-nucl-102419-043156

Precise measurements of the decay of free neutrons

Dirk Dubbers
, Bastian Märkisch

Associate Professorship of Fundamental Particle Physics at Low Energies

Heidelberg University

Research output: Contribution to journal › Review article › peer-review

28 Scopus citations

Abstract

The impact of new and highly precise neutron β decay data is reviewed. We focus on recent results from neutron lifetime, β asymmetry, and electron–neutrino correlation experiments. From these results, weak interaction parameters are extracted with unprecedented precision, which is possible also because of progress in effective field theory and lattice QCD. Limits on New Physics beyond the Standard Model derived from neutron decay data are sharper than those derived from high-energy experiments, except for processes involving right-handed neutrinos.

Original language	English
Pages (from-to)	139-163
Number of pages	25
Journal	Annual Review of Nuclear and Particle Science
Volume	71
DOIs	https://doi.org/10.1146/annurev-nucl-102419-043156
State	Published - 2021

Keywords

Beyond the Standard Model
CKM unitarity
Cold neutrons
Effective field theory
Ultracold neutrons
Weak interaction
β decay

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10.1146/annurev-nucl-102419-043156

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title = "Precise measurements of the decay of free neutrons",

abstract = "The impact of new and highly precise neutron β decay data is reviewed. We focus on recent results from neutron lifetime, β asymmetry, and electron–neutrino correlation experiments. From these results, weak interaction parameters are extracted with unprecedented precision, which is possible also because of progress in effective field theory and lattice QCD. Limits on New Physics beyond the Standard Model derived from neutron decay data are sharper than those derived from high-energy experiments, except for processes involving right-handed neutrinos.",

keywords = "Beyond the Standard Model, CKM unitarity, Cold neutrons, Effective field theory, Ultracold neutrons, Weak interaction, β decay",

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AU - Dubbers, Dirk

AU - Märkisch, Bastian

N1 - Publisher Copyright: Copyright © 2021 by Annual Reviews. This work is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See credit lines of images or other third-party material in this article for license information

PY - 2021

Y1 - 2021

N2 - The impact of new and highly precise neutron β decay data is reviewed. We focus on recent results from neutron lifetime, β asymmetry, and electron–neutrino correlation experiments. From these results, weak interaction parameters are extracted with unprecedented precision, which is possible also because of progress in effective field theory and lattice QCD. Limits on New Physics beyond the Standard Model derived from neutron decay data are sharper than those derived from high-energy experiments, except for processes involving right-handed neutrinos.

AB - The impact of new and highly precise neutron β decay data is reviewed. We focus on recent results from neutron lifetime, β asymmetry, and electron–neutrino correlation experiments. From these results, weak interaction parameters are extracted with unprecedented precision, which is possible also because of progress in effective field theory and lattice QCD. Limits on New Physics beyond the Standard Model derived from neutron decay data are sharper than those derived from high-energy experiments, except for processes involving right-handed neutrinos.

KW - Beyond the Standard Model

KW - CKM unitarity

KW - Cold neutrons

KW - Effective field theory

KW - Ultracold neutrons

KW - Weak interaction

KW - β decay

UR - https://www.scopus.com/pages/publications/85107631866

U2 - 10.1146/annurev-nucl-102419-043156

DO - 10.1146/annurev-nucl-102419-043156

M3 - Review article

AN - SCOPUS:85107631866

SN - 0163-8998

VL - 71

SP - 139

EP - 163

JO - Annual Review of Nuclear and Particle Science

JF - Annual Review of Nuclear and Particle Science

ER -

Precise measurements of the decay of free neutrons

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Keywords

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