Proposed measurement of the beta-neutrino correlation in neutron decay

Collett, B.; Anderman, R.; Balashov, S.; Bateman, F. B.; Byrne, J.; Dewey, M. S.; Fisher, B. M.; Goldin, L.; Jones, G.; Komives, A.; Konopka, T.; Leuschner, M.; Mostovoy, Y.; Nico, J. S.; Thompson, A. K.; Trull, C.; Wietfeldt, F. E.; Wilson, R.; Yerozolimsky, B. G.

doi:10.6028/jres.110.060

Title: Proposed measurement of the beta-neutrino correlation in neutron decay

Abstract

Currently, the beta-neutrino asymmetry has the largest uncertainty (4 %) of the neutron decay angular correlations. Without requiring polarimetry, this decay parameter can be used to measure λ (g_a/g_v), test Cabibbo-Kobayashi-Maskawa (CKM) unitarity, limit scalar and tensor currents, and search for Charged Vector Current (CVC) violation. We propose to measure the beta-neutrino asymmetry coeffcient, a, using time-of-flight for the recoil protons. We hope to achieve a systematic uncertainty of σ_a / a ≈ 1.0 %. After tests at Indiana University’s Low Energy Neutron Source (LENS), the apparatus will be moved to the National Institute of Standards and Technology (NIST) where the measurement can achieve a statistical uncertainty of 1 % to 2 % in about 200 beam days.

Authors:

Collett, B. ^[1]; Anderman, R. ^[1]; Balashov, S. ^[2]; Bateman, F. B. ^[3]; Byrne, J. ^[4]; Dewey, M. S. ^[3]; Fisher, B. M. ^[5]; Goldin, L. ^[6]; Jones, G. ^[7]; Komives, A. ^[8]; Konopka, T. ^[7]; Leuschner, M. ^[9]; Mostovoy, Y. ^[2]; Nico, J. S. ^[3]; Thompson, A. K. ^[3]; Trull, C. ^[5]; Wietfeldt, F. E. ^[5]; Wilson, R. ^[6]; Yerozolimsky, B. G. ^[6]

Hamilton College, Clinton, NY (United States). Physics Dept.
National Research Centre, Moscow (Russian Federation). Kurchatov Institute
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Univ. of Sussex, Brighton (United Kingdom)
Tulane Univ., New Orleans, LA (United States). Dept. of Physics
Harvard Univ., Cambridge, MA (United States). Physics Dept.
Hamilton College, Clinton, NY (United States). Physics Dept.
DePauw Univ., Greencastle, IN (United States). Physics Dept.
Indiana Univ., Bloomington, IN (United States). Cyclotron Facility

Publication Date:: Fri Jul 01 00:00:00 EDT 2005

Research Org.:: National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1628763

Grant/Contract Number:: AI02-93ER40784

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Research of the National Institute of Standards and Technology

Additional Journal Information:: Journal Volume: 110; Journal Issue: 4; Journal ID: ISSN 1044-677X

Publisher:: National Institute of Standards (NIST)

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Instruments & Instrumentation; Physics; beta decay; beta-neutrino correlation; neutron decay; CKM unitarit

Citation Formats


                    Collett, B., Anderman, R., Balashov, S., Bateman, F. B., Byrne, J., Dewey, M. S., Fisher, B. M., Goldin, L., Jones, G., Komives, A., Konopka, T., Leuschner, M., Mostovoy, Y., Nico, J. S., Thompson, A. K., Trull, C., Wietfeldt, F. E., Wilson, R., and Yerozolimsky, B. G. Proposed measurement of the beta-neutrino correlation in neutron decay.  United States: N. p., 2005. 
Web.  doi:10.6028/jres.110.060.

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                    Collett, B., Anderman, R., Balashov, S., Bateman, F. B., Byrne, J., Dewey, M. S., Fisher, B. M., Goldin, L., Jones, G., Komives, A., Konopka, T., Leuschner, M., Mostovoy, Y., Nico, J. S., Thompson, A. K., Trull, C., Wietfeldt, F. E., Wilson, R., & Yerozolimsky, B. G. Proposed measurement of the beta-neutrino correlation in neutron decay.  United States.  https://doi.org/10.6028/jres.110.060

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                    Collett, B., Anderman, R., Balashov, S., Bateman, F. B., Byrne, J., Dewey, M. S., Fisher, B. M., Goldin, L., Jones, G., Komives, A., Konopka, T., Leuschner, M., Mostovoy, Y., Nico, J. S., Thompson, A. K., Trull, C., Wietfeldt, F. E., Wilson, R., and Yerozolimsky, B. G. Fri .  
"Proposed measurement of the beta-neutrino correlation in neutron decay".  United States.  https://doi.org/10.6028/jres.110.060.  https://www.osti.gov/servlets/purl/1628763.

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@article{osti_1628763,

  title        = {Proposed measurement of the beta-neutrino correlation in neutron decay},

  author       = {Collett, B. and Anderman, R. and Balashov, S. and Bateman, F. B. and Byrne, J. and Dewey, M. S. and Fisher, B. M. and Goldin, L. and Jones, G. and Komives, A. and Konopka, T. and Leuschner, M. and Mostovoy, Y. and Nico, J. S. and Thompson, A. K. and Trull, C. and Wietfeldt, F. E. and Wilson, R. and Yerozolimsky, B. G.},

  abstractNote = {Currently, the beta-neutrino asymmetry has the largest uncertainty (4 %) of the neutron decay angular correlations. Without requiring polarimetry, this decay parameter can be used to measure λ (ga/gv), test Cabibbo-Kobayashi-Maskawa (CKM) unitarity, limit scalar and tensor currents, and search for Charged Vector Current (CVC) violation. We propose to measure the beta-neutrino asymmetry coeffcient, a, using time-of-flight for the recoil protons. We hope to achieve a systematic uncertainty of σa / a ≈ 1.0 %. After tests at Indiana University’s Low Energy Neutron Source (LENS), the apparatus will be moved to the National Institute of Standards and Technology (NIST) where the measurement can achieve a statistical uncertainty of 1 % to 2 % in about 200 beam days.},

  doi          = {10.6028/jres.110.060},

  journal      = {Journal of Research of the National Institute of Standards and Technology},

  number       = 4,

  volume       = 110,

  place        = {United States},

  year         = {Fri Jul 01 00:00:00 EDT 2005},

  month        = {Fri Jul 01 00:00:00 EDT 2005}

}

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Works referenced in this record:

Measurement of the Neutron Lifetime Using a Proton Trap
journal, October 2003

Dewey, M. S.; Gilliam, D. M.; Nico, J. S.
Physical Review Letters, Vol. 91, Issue 15
DOI: 10.1103/physrevlett.91.152302

Sharpening Low-Energy, Standard-Model Tests via Correlation Coefficients in Neutron Beta-Decay
text, January 2000

Gardner, S.; Zhang, C.
arXiv
DOI: 10.48550/arxiv.hep-ph/0012098

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Similar Records

Title: Proposed measurement of the beta-neutrino correlation in neutron decay

Abstract

Citation Formats

Measurement of the Neutron Lifetime Using a Proton Trap journal, October 2003

Sharpening Low-Energy, Standard-Model Tests via Correlation Coefficients in Neutron Beta-Decay text, January 2000

Measurement of the Neutron Lifetime Using a Proton Trap
journal, October 2003

Sharpening Low-Energy, Standard-Model Tests via Correlation Coefficients in Neutron Beta-Decay
text, January 2000