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.

Determination of the Beta-Decay Interaction from Electron-Neutrino Angular Correlation Measurements

1959 ◽  
Vol 116 (1) ◽  
pp. 134-143 ◽  
Author(s):  
J. S. Allen ◽  
R. L. Burman ◽  
W. B. Herrmannsfeldt ◽  
P. Stähelin ◽  
T. H. Braid
Keyword(s):  
Angular Correlation ◽  
Beta Decay ◽  
Electron Neutrino ◽  
Decay Interaction

Electron-Neutrino Angular Correlation in the Beta-Decay ofHe6

1949 ◽  
Vol 75 (4) ◽  
pp. 570-577 ◽  
Author(s):  
James S. Allen ◽  
H. R. Paneth ◽  
A. H. Morrish
Keyword(s):  
Angular Correlation ◽  
Beta Decay ◽  
Electron Neutrino

scholarly journals NoMoS: An R × B drift momentum spectrometer for beta decay studies

2019 ◽  
Vol 219 ◽  
pp. 04003 ◽  
Author(s):  
Daniel Moser ◽  
Hartmut Abele ◽  
Joachim Bosina ◽  
Harald Fillunger ◽  
Torsten Soldner ◽  
...  
Keyword(s):  
Standard Model ◽  
Angular Correlation ◽  
Beta Decay ◽  
Particle Physics ◽  
Correlation Coefficients ◽  
New Physics ◽  
Interference Term ◽  
Free Neutron ◽  
The Standard Model ◽  
Momentum Spectra

The beta decay of the free neutron provides several probes to test the Standard Model of particle physics as well as to search for extensions thereof. Hence, multiple experiments investigating the decay have already been performed, are under way or are being prepared. These measure the mean lifetime, angular correlation coefficients or various spectra of the charged decay products (proton and electron). NoMoS, the neutron decay products mo___mentum spectrometer, presents a novel method of momentum spectroscopy: it utilizes the R ×B drift effect to disperse charged particles dependent on their momentum in an uniformly curved magnetic field. This spectrometer is designed to precisely measure momentum spectra and angular correlation coefficients in free neutron beta decay to test the Standard Model and to search for new physics beyond. With NoMoS, we aim to measure inter alia the electron-antineutrino correlation coefficient a and the Fierz interference term b with an ultimate precision of Δa/a < 0.3% and Δb < 10−3 respectively. In this paper, we present the measurement principles, discuss measurement uncertainties and systematics, and give a status update.

Electron-Neutrino Angular Correlation in the Beta Decay ofNeon19

1955 ◽  
Vol 97 (1) ◽  
pp. 109-116 ◽  
Author(s):  
D. R. Maxson ◽  
J. S. Allen ◽  
W. K. Jentschke
Keyword(s):  
Angular Correlation ◽  
Beta Decay ◽  
Electron Neutrino

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
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