EPJ Web of Conferences (Jan 2019)
Final results for the neutron β-asymmetry parameter A0 from the UCNA experiment
- Plaster B.,
- Adamek E.,
- Allgeier B.,
- Anaya J.,
- Back H.O.,
- Bagdasarova Y.,
- Berguno D.B.,
- Blatnik M.,
- Boissevain J.G.,
- Bowles T.J.,
- Broussard L.J.,
- Brown M.A.-P.,
- Carr R.,
- Clark D.J.,
- Clayton S.,
- Cude-Woods C.,
- Currie S.,
- Dees E.B.,
- Ding X.,
- Du S.,
- Filippone B.W.,
- García A.,
- Geltenbort P.,
- Hasan S.,
- Hawari A.,
- Hickerson K.P.,
- Hill R.,
- Hino M.,
- Hoagland J.,
- Hoedl S.A.,
- Hogan G.E.,
- Hona B.,
- Hong R.,
- Holley A.T.,
- Ito T.M.,
- Kawai T.,
- Kirch K.,
- Kitagaki S.,
- Knecht A.,
- Lamoreaux S.K.,
- Liu C.-Y.,
- Liu J.,
- Makela M.,
- Mammei R.R.,
- Martin J.W.,
- Meier N.,
- Melconian D.,
- Mendenhall M.P.,
- Moore S.D.,
- Morris C.L.,
- Mortensen R.,
- Nepal S.,
- Nouri N.,
- Pattie R.W.,
- Pérez Galván A.,
- Phillips II D.G.,
- Pichlmaier A.,
- Picker R.,
- Pitt M.L.,
- Ramsey J.C.,
- Rios R.,
- Russell R.,
- Sabourov K.,
- Sallaska A.L.,
- Salvat D.J.,
- Saunders A.,
- Schmid R.,
- Seestrom S.J.,
- Servicky C.,
- Sharapov E.I.,
- Sjue S.K.L.,
- Slutsky S.,
- Smith D.,
- Sondheim W.E.,
- Sun X.,
- Swank C.,
- Swift G.,
- Tatar E.,
- Teasdale W.,
- Terai C.,
- Tipton B.,
- Utsuro M.,
- Vogelaar R.B.,
- VornDick B.,
- Wang Z.,
- Wehring B.,
- Wexler J.,
- Womack T.,
- Wrede C.,
- Xu Y.P.,
- Yan H.,
- Young A.R.,
- Yuan J.,
- Zeck B.A.
Affiliations
- Plaster B.
- University of Kentucky
- Adamek E.
- Indiana University
- Allgeier B.
- University of Kentucky
- Anaya J.
- Los Alamos National Laboratory
- Back H.O.
- Bagdasarova Y.
- Berguno D.B.
- Virginia Tech
- Blatnik M.
- California Institute of Technology
- Boissevain J.G.
- Los Alamos National Laboratory
- Bowles T.J.
- Los Alamos National Laboratory
- Broussard L.J.
- Brown M.A.-P.
- University of Kentucky
- Carr R.
- California Institute of Technology
- Clark D.J.
- Los Alamos National Laboratory
- Clayton S.
- Los Alamos National Laboratory
- Cude-Woods C.
- North Carolina State University
- Currie S.
- Los Alamos National Laboratory
- Dees E.B.
- Ding X.
- Virginia Tech
- Du S.
- North Carolina State University
- Filippone B.W.
- California Institute of Technology
- García A.
- University of Washington
- Geltenbort P.
- Institut Laue-Langevin
- Hasan S.
- University of Kentucky
- Hawari A.
- North Carolina State University
- Hickerson K.P.
- California Institute of Technology
- Hill R.
- Los Alamos National Laboratory
- Hino M.
- Kyoto University
- Hoagland J.
- North Carolina State University
- Hoedl S.A.
- Hogan G.E.
- Los Alamos National Laboratory
- Hona B.
- University of Kentucky
- Hong R.
- University of Washington
- Holley A.T.
- North Carolina State University
- Ito T.M.
- Los Alamos National Laboratory
- Kawai T.
- Kyoto University
- Kirch K.
- Los Alamos National Laboratory
- Kitagaki S.
- Tohoku University
- Knecht A.
- University of Washington
- Lamoreaux S.K.
- Los Alamos National Laboratory
- Liu C.-Y.
- Indiana University
- Liu J.
- Makela M.
- Los Alamos National Laboratory
- Mammei R.R.
- Virginia Tech
- Martin J.W.
- University of Winnipeg
- Meier N.
- North Carolina State University
- Melconian D.
- Mendenhall M.P.
- California Institute of Technology
- Moore S.D.
- North Carolina State University
- Morris C.L.
- Los Alamos National Laboratory
- Mortensen R.
- Los Alamos National Laboratory
- Nepal S.
- University of Kentucky
- Nouri N.
- University of Kentucky
- Pattie R.W.
- Pérez Galván A.
- California Institute of Technology
- Phillips II D.G.
- North Carolina State University
- Pichlmaier A.
- Los Alamos National Laboratory
- Picker R.
- California Institute of Technology
- Pitt M.L.
- Virginia Tech
- Ramsey J.C.
- Los Alamos National Laboratory
- Rios R.
- Russell R.
- California Institute of Technology
- Sabourov K.
- North Carolina State University
- Sallaska A.L.
- University of Washington
- Salvat D.J.
- Indiana University
- Saunders A.
- Los Alamos National Laboratory
- Schmid R.
- California Institute of Technology
- Seestrom S.J.
- Los Alamos National Laboratory
- Servicky C.
- North Carolina State University
- Sharapov E.I.
- Joint Institute for Nuclear Research
- Sjue S.K.L.
- Slutsky S.
- California Institute of Technology
- Smith D.
- North Carolina State University
- Sondheim W.E.
- Los Alamos National Laboratory
- Sun X.
- California Institute of Technology
- Swank C.
- California Institute of Technology
- Swift G.
- Triangle Universities Nuclear Laboratory
- Tatar E.
- Idaho State University
- Teasdale W.
- Los Alamos National Laboratory
- Terai C.
- North Carolina State University
- Tipton B.
- California Institute of Technology
- Utsuro M.
- Kyoto University
- Vogelaar R.B.
- Virginia Tech
- VornDick B.
- North Carolina State University
- Wang Z.
- Los Alamos National Laboratory
- Wehring B.
- North Carolina State University
- Wexler J.
- North Carolina State University
- Womack T.
- Los Alamos National Laboratory
- Wrede C.
- University of Washington
- Xu Y.P.
- North Carolina State University
- Yan H.
- University of Kentucky
- Young A.R.
- Yuan J.
- California Institute of Technology
- Zeck B.A.
- DOI
- https://doi.org/10.1051/epjconf/201921904004
- Journal volume & issue
-
Vol. 219
p. 04004
Abstract
The UCNA experiment was designed to measure the neutron β-asymmetry parameter A0 using polarized ultracold neutrons (UCN). UCN produced via downscattering in solid deuterium were polarized via transport through a 7 T magnetic field, and then directed to a 1 T solenoidal electron spectrometer, where the decay electrons were detected in electron detector packages located on the two ends of the spectrometer. A value for A0 was then extracted from the asymmetry in the numbers of counts in the two detector packages. We summarize all of the results from the UCNA experiment, obtained during run periods in 2007, 2008–2009, 2010, and 2011–2013, which ultimately culminated in a 0.67% precision result for A0.
