Electron-neutrino angular correlation coefficientameasured from free-neutron decay

1975 ◽  
Vol 11 (3) ◽  
pp. 510-512 ◽  
Author(s):  
R. Dobrozemsky ◽  
E. Kerschbaum ◽  
G. Moraw ◽  
H. Paul ◽  
C. Stratowa ◽  
...  
Keyword(s):  
Angular Correlation ◽  
Electron Neutrino ◽  
Neutron Decay ◽  
Free Neutron

scholarly journals Improved determination of the β−ν¯e angular correlation coefficient a in free neutron decay with the aSPECT spectrometer

2020 ◽  
Vol 101 (5) ◽  
Author(s):  
M. Beck ◽  
F. Ayala Guardia ◽  
M. Borg ◽  
J. Kahlenberg ◽  
R. Muñoz Horta ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Angular Correlation ◽  
Neutron Decay ◽  
Free Neutron

THE ELECTRON NEUTRINO ANGULAR CORRELATION IN THE BETA DECAY OF THE FREE NEUTRON

1958 ◽  
Vol 36 (11) ◽  
pp. 1450-1475 ◽  
Author(s):  
J. M. Robson
Keyword(s):  
Correlation Coefficient ◽  
Angular Correlation ◽  
Beta Decay ◽  
Statistical Error ◽  
Systematic Errors ◽  
Momentum Spectrum ◽  
Electron Neutrino ◽  
Angular Range ◽  
Free Neutron ◽  
Best Value

The electron neutrino angular correlation coefficient has been measured for the beta decay of the free neutron by measuring the momentum spectrum of the electrons emitted in a restricted angular range from the direction of the recoil protons. Experiments were made for two different angular ranges and yielded a best value for the angular correlation coefficient of +0.07 with an error of ±0.12. This error includes the statistical error in the form of its standard deviation and an allowance for all known systematic errors.

scholarly journals aCORN: An experiment to measure the electron-antineutrino correlation coefficient in free neutron decay

2017 ◽  
Vol 88 (8) ◽  
pp. 083503 ◽  
Author(s):  
B. Collett ◽  
F. Bateman ◽  
W. K. Bauder ◽  
J. Byrne ◽  
W. A. Byron ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Neutron Decay ◽  
Electron Antineutrino ◽  
Free Neutron

Ratio|gAgV|derived from the proton spectrum in free-neutron decay

1978 ◽  
Vol 18 (11) ◽  
pp. 3970-3979 ◽  
Author(s):  
Chr. Stratowa ◽  
R. Dobrozemsky ◽  
P. Weinzierl
Keyword(s):  
Neutron Decay ◽  
Proton Spectrum ◽  
Free Neutron

scholarly journals Measurements of the Neutron Lifetime

Atoms ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 70 ◽  
Author(s):  
F. Wietfeldt
Keyword(s):  
Nuclear Physics ◽  
Neutron Decay ◽  
Neutron Lifetime ◽  
The Past ◽  
Free Neutron ◽  
Mean Lifetime ◽  
Fundamental Process ◽  
Beam Method ◽  
The Subject ◽  
Particle Decays

Free neutron decay is a fundamental process in particle and nuclear physics. It is the prototype for nuclear beta decay and other semileptonic weak particle decays. Neutron decay played a key role in the formation of light elements in the early universe. The precise value of the neutron mean lifetime, about 15 min, has been the subject of many experiments over the past 70 years. The two main experimental methods, the beam method and the ultracold neutron storage method, give average values of the neutron lifetime that currently differ by 8.7 s (4 standard deviations), a serious discrepancy. The physics of neutron decay, implications of the neutron lifetime, previous and recent experimental measurements, and prospects for the future are reviewed.

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