Precision Measurement of the Neutron Beta-Decay Asymmetry

Michael P. Mendenhall; Robert W. Pattie; Yelena Bagdasarova; David B. Berguno; Leah J. Broussard; Richard Carr; Scott Currie; Xinjian Ding; Bradley W. Filippone; Alejandro Garcia; Peter Geltenbort; Kevin P. Hickerson; J. Todd Hoagland; Anthony T. Holley; Ran Hong; Takeyasu M. Ito; Andreas Knecht; ChenYu Liu; J. L. Liu; Mark Makela; Russell R. Mammei; J. W. Martin; Dan Melconian; Spencer D. Moore; Christopher L. Morris; Margaret L. Pitt; Blakely Plaster; John C. Ramsey; Roger Rios; Andy Saunders; Susan J. Seestrom; Eduard I. Sharapov; Walter E. Sondheim; E. Tatar; Robert B. Vogelaar; Brittany VornDick; Christopher Wrede; Andrew R. Young; B. A. Zeck

doi:10.1103/PhysRevC.87.032501

Precision Measurement of the Neutron Beta-Decay Asymmetry

Michael P. Mendenhall
, Robert W. Pattie
, Yelena Bagdasarova
, David B. Berguno
, Leah J. Broussard
, Richard Carr
, Scott Currie
, Xinjian Ding
, Bradley W. Filippone
, Alejandro Garcia
, Peter Geltenbort
, Kevin P. Hickerson
, J. Todd Hoagland
, Anthony T. Holley
, Ran Hong
, Takeyasu M. Ito
, Andreas Knecht
, ChenYu Liu
, J. L. Liu
, Mark Makela

Russell R. Mammei, J. W. Martin, Dan Melconian, Spencer D. Moore, Christopher L. Morris, Margaret L. Pitt, Blakely Plaster, John C. Ramsey, Roger Rios, Andy Saunders, Susan J. Seestrom, Eduard I. Sharapov, Walter E. Sondheim, E. Tatar, Robert B. Vogelaar, Brittany VornDick, Christopher Wrede, Andrew R. Young, B. A. Zeck

California Institute of Technology
North Carolina State University
Los Alamos National Laboratory
Virginia Tech
Duke University
University of Washington
Institut Laue-Langevin
Indiana University
University of Winnipeg
Texas AM University
University of Kentucky
Joint Institute for Nuclear Research
Idaho State University
Virginia Tech, Blacksburg

Research output: Contribution to journal › Article › peer-review

Abstract

A new measurement of the neutron β-decay asymmetry A0 has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A0 = −0.11954(55)stat.(98)syst., corresponding to the ratio of axial-vector to vector coupling λ ≡ gA/gV = −1.2756(30).

Original language	American English
Journal	Physical Review C
Volume	87
DOIs	https://doi.org/10.1103/PhysRevC.87.032501
State	Published - Mar 25 2013
Externally published	Yes

Keywords

Beta-Decay Asymmetry
Neutron
Precision Measurement

Disciplines

Atomic, Molecular and Optical Physics
Physics
Nuclear

Access to Document

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Cite this

Mendenhall, M. P., Pattie, R. W., Bagdasarova, Y., Berguno, D. B., Broussard, L. J., Carr, R., Currie, S., Ding, X., Filippone, B. W., Garcia, A., Geltenbort, P., Hickerson, K. P., Hoagland, J. T., Holley, A. T., Hong, R., Ito, T. M., Knecht, A., Liu, C., Liu, J. L., ... Zeck, B. A. (2013). Precision Measurement of the Neutron Beta-Decay Asymmetry. Physical Review C, 87. https://doi.org/10.1103/PhysRevC.87.032501

Mendenhall, MP, Pattie, RW, Bagdasarova, Y, Berguno, DB, Broussard, LJ, Carr, R, Currie, S, Ding, X, Filippone, BW, Garcia, A, Geltenbort, P, Hickerson, KP, Hoagland, JT, Holley, AT, Hong, R, Ito, TM, Knecht, A, Liu, C, Liu, JL, Makela, M, Mammei, RR, Martin, JW, Melconian, D, Moore, SD, Morris, CL, Pitt, ML, Plaster, B, Ramsey, JC, Rios, R, Saunders, A, Seestrom, SJ, Sharapov, EI, Sondheim, WE, Tatar, E, Vogelaar, RB, VornDick, B, Wrede, C, Young, AR & Zeck, BA 2013, 'Precision Measurement of the Neutron Beta-Decay Asymmetry', Physical Review C, vol. 87. https://doi.org/10.1103/PhysRevC.87.032501

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title = "Precision Measurement of the Neutron Beta-Decay Asymmetry",

abstract = " A new measurement of the neutron β-decay asymmetry A0 has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A0 = −0.11954(55)stat.(98)syst., corresponding to the ratio of axial-vector to vector coupling λ ≡ gA/gV = −1.2756(30). ",

keywords = "Beta-Decay Asymmetry, Neutron, Precision Measurement",

author = "Mendenhall, \{Michael P.\} and Pattie, \{Robert W.\} and Yelena Bagdasarova and Berguno, \{David B.\} and Broussard, \{Leah J.\} and Richard Carr and Scott Currie and Xinjian Ding and Filippone, \{Bradley W.\} and Alejandro Garcia and Peter Geltenbort and Hickerson, \{Kevin P.\} and Hoagland, \{J. Todd\} and Holley, \{Anthony T.\} and Ran Hong and Ito, \{Takeyasu M.\} and Andreas Knecht and ChenYu Liu and Liu, \{J. L.\} and Mark Makela and Mammei, \{Russell R.\} and Martin, \{J. W.\} and Dan Melconian and Moore, \{Spencer D.\} and Morris, \{Christopher L.\} and Pitt, \{Margaret L.\} and Blakely Plaster and Ramsey, \{John C.\} and Roger Rios and Andy Saunders and Seestrom, \{Susan J.\} and Sharapov, \{Eduard I.\} and Sondheim, \{Walter E.\} and E. Tatar and Vogelaar, \{Robert B.\} and Brittany VornDick and Christopher Wrede and Young, \{Andrew R.\} and Zeck, \{B. A.\}",

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month = mar,

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doi = "10.1103/PhysRevC.87.032501",

language = "American English",

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AU - Pattie, Robert W.

AU - Bagdasarova, Yelena

AU - Berguno, David B.

AU - Broussard, Leah J.

AU - Carr, Richard

AU - Currie, Scott

AU - Ding, Xinjian

AU - Filippone, Bradley W.

AU - Garcia, Alejandro

AU - Geltenbort, Peter

AU - Hickerson, Kevin P.

AU - Hoagland, J. Todd

AU - Holley, Anthony T.

AU - Hong, Ran

AU - Ito, Takeyasu M.

AU - Knecht, Andreas

AU - Liu, ChenYu

AU - Liu, J. L.

AU - Makela, Mark

AU - Mammei, Russell R.

AU - Martin, J. W.

AU - Melconian, Dan

AU - Moore, Spencer D.

AU - Morris, Christopher L.

AU - Pitt, Margaret L.

AU - Plaster, Blakely

AU - Ramsey, John C.

AU - Rios, Roger

AU - Saunders, Andy

AU - Seestrom, Susan J.

AU - Sharapov, Eduard I.

AU - Sondheim, Walter E.

AU - Tatar, E.

AU - Vogelaar, Robert B.

AU - VornDick, Brittany

AU - Wrede, Christopher

AU - Young, Andrew R.

AU - Zeck, B. A.

PY - 2013/3/25

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N2 - A new measurement of the neutron β-decay asymmetry A0 has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A0 = −0.11954(55)stat.(98)syst., corresponding to the ratio of axial-vector to vector coupling λ ≡ gA/gV = −1.2756(30).

AB - A new measurement of the neutron β-decay asymmetry A0 has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE). Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A0 = −0.11954(55)stat.(98)syst., corresponding to the ratio of axial-vector to vector coupling λ ≡ gA/gV = −1.2756(30).

KW - Beta-Decay Asymmetry

KW - Neutron

KW - Precision Measurement

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DO - 10.1103/PhysRevC.87.032501

M3 - Article

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JO - Physical Review C

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