Measurement of the neutrino-spin correlation parameter B neutron decay using ultracold neutrons
Journal Article
·
· Revista Mexicana de Fisica
OSTI ID:956453
- Los Alamos National Laboratory
We present a new approach to measuring the neutrino-spin correlation parameter B in neutron decay. The approach combines the technology of large-area ion-implanted silicon detectors being developed for the abBA experiment, with an ultracold neutron source to provide more precise neutron polarimetry. The technique detects both proton and electron from the neutron decay in coincidence. B is determined from an electron-energy-dependent measurement of the proton spin asymmetry. This approach will provide a statistical precision of 1 x 10-4 . The systematic precision is still being evaluated, but is expected to be below 1 x 10-3 , and could approach 1 x 10-4 . A measurement of B with this precision would place constraints on supersymmetric extensions to the Standard Model.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- DOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 956453
- Report Number(s):
- LA-UR-09-01091; LA-UR-09-1091
- Journal Information:
- Revista Mexicana de Fisica, Journal Name: Revista Mexicana de Fisica; ISSN RMXFAT; ISSN 0035-001X
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Precision Measurement of Neutron {beta}-Decay Angular Correlations with Pulsed Cold Neutrons -- The abBA Experiment
Precision neutron polarimetry for neutron beta decay
Measuring Neutron Beta Decay 'A' Parameter Using Ultracold Neutrons
Journal Article
·
Tue May 24 00:00:00 EDT 2005
· AIP Conference Proceedings
·
OSTI ID:20722659
Precision neutron polarimetry for neutron beta decay
Conference
·
Wed Dec 31 23:00:00 EST 2003
·
OSTI ID:977698
Measuring Neutron Beta Decay 'A' Parameter Using Ultracold Neutrons
Journal Article
·
Wed Dec 16 23:00:00 EST 2009
· AIP Conference Proceedings
·
OSTI ID:21325719