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Title: A New Approach to Measuring the Neutron Decay Correlations with Cold Neutrons at LANSCE

Abstract

Precision measurements of the neutron beta-decay correlations A, B, a, and b provide important tests of the standard model of electroweak interactions: a test of the unitarity of the first row of the CKM matrix, a search for new weak interactions, a test of the theory of nuclear beta decays, and a test of the conserved-vector-current hypothesis. The authors are designing an experiment at the LANSCE short-pulse spallation source to measure all four correlations to an order of magnitude better accuracy than the existing measurements. The accuracy of the previous measurements was limited by systematics. The design of the proposed experiment makes use of the pulsed nature of the LANSCE source to reduce systematic errors associated with the measurement of the neutron polarization as well as other systematic errors. In addition, the authors are developing silicon strip detectors for detecting both the proton and electron from the neutron decay.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
759626
Report Number(s):
LA-UR-98-4665
TRN: US0004356
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Cold Neutrons, No location supplied, No date supplied; Other Information: PBD: 8 Jun 1999
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BETA DECAY; COLD NEUTRONS; CORRELATIONS; ELECTRON DETECTION; PROTON DETECTION; POLARIZATION; SPALLATION; STANDARD MODEL; UNITARITY; WEAK INTERACTIONS

Citation Formats

Wilburn, W S, Bowman, J D, Greene, G L, Jones, G L, Kapustinsky, J S, and Penttila, S I. A New Approach to Measuring the Neutron Decay Correlations with Cold Neutrons at LANSCE. United States: N. p., 1999. Web.
Wilburn, W S, Bowman, J D, Greene, G L, Jones, G L, Kapustinsky, J S, & Penttila, S I. A New Approach to Measuring the Neutron Decay Correlations with Cold Neutrons at LANSCE. United States.
Wilburn, W S, Bowman, J D, Greene, G L, Jones, G L, Kapustinsky, J S, and Penttila, S I. Tue . "A New Approach to Measuring the Neutron Decay Correlations with Cold Neutrons at LANSCE". United States. https://www.osti.gov/servlets/purl/759626.
@article{osti_759626,
title = {A New Approach to Measuring the Neutron Decay Correlations with Cold Neutrons at LANSCE},
author = {Wilburn, W S and Bowman, J D and Greene, G L and Jones, G L and Kapustinsky, J S and Penttila, S I},
abstractNote = {Precision measurements of the neutron beta-decay correlations A, B, a, and b provide important tests of the standard model of electroweak interactions: a test of the unitarity of the first row of the CKM matrix, a search for new weak interactions, a test of the theory of nuclear beta decays, and a test of the conserved-vector-current hypothesis. The authors are designing an experiment at the LANSCE short-pulse spallation source to measure all four correlations to an order of magnitude better accuracy than the existing measurements. The accuracy of the previous measurements was limited by systematics. The design of the proposed experiment makes use of the pulsed nature of the LANSCE source to reduce systematic errors associated with the measurement of the neutron polarization as well as other systematic errors. In addition, the authors are developing silicon strip detectors for detecting both the proton and electron from the neutron decay.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {6}
}

Conference:
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