Using Nab to determine correlations in unpolarized neutron decay

L. J. Broussard; S. Baeßler; T. L. Bailey; N. Birge; J. D. Bowman; C. B. Crawford; C. Cude-Woods; D. E. Fellers; N. Fomin; E. Frlež; M. T.W. Gericke; L. Hayen; A. P. Jezghani; H. Li; N. Macsai; M. F. Makela; R. R. Mammei; D. Mathews; P. L. McGaughey; P. E. Mueller; D. Počanić; C. A. Royse; A. Salas-Bacci; S. K.L. Sjue; J. C. Ramsey; N. Severijns; E. C. Smith; J. Wexler; R. A. Whitehead; A. R. Young; B. A. Zeck

doi:10.1007/s10751-018-1538-7

Using Nab to determine correlations in unpolarized neutron decay

L. J. Broussard, S. Baeßler, T. L. Bailey, N. Birge, J. D. Bowman, C. B. Crawford, C. Cude-Woods, D. E. Fellers, N. Fomin, E. Frlež, M. T.W. Gericke, L. Hayen, A. P. Jezghani, H. Li, N. Macsai, M. F. Makela, R. R. Mammei, D. Mathews, P. L. McGaughey, P. E. MuellerD. Počanić, C. A. Royse, A. Salas-Bacci, S. K.L. Sjue, J. C. Ramsey, N. Severijns, E. C. Smith, J. Wexler, R. A. Whitehead, A. R. Young, B. A. Zeck

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

7 Scopus citations

Abstract

The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constants λ = g_A/g_V with precision δλ/λ ∼ 3 × 10^{− 4} and search for a Fierz term b_F at a level Δb_F < 10^{− 3}. The Nab detection system uses thick, large area, segmented silicon detectors to very precisely determine the decay proton’s time of flight and the decay electron’s energy in coincidence and reconstruct the correlation between the antineutrino and electron momenta. Excellent understanding of systematic effects affecting timing and energy reconstruction using this detection system are required. To explore these effects, a series of ex situ studies have been undertaken, including a search for a Fierz term at a less sensitive level of Δb_F < 10^{− 2} in the beta decay of ⁴⁵Ca using the UCNA spectrometer.

Original language	English
Article number	1
Journal	Hyperfine Interactions
Volume	240
Issue number	1
DOIs	https://doi.org/10.1007/s10751-018-1538-7
State	Published - Jun 1 2019

Bibliographical note

Publisher Copyright:
© 2018, Springer Nature Switzerland AG.

Funding

Acknowledgements Research was sponsored by the Laboratory Directed Research and Development Program [project 8215] of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy, and by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics [contracts DE-AC05-00OR2272, DE-AC52-06NA25396, DE-FG02-03ER41258, DE-FG02-ER41042, DESC0008107, and DE-SC0014622], the National Science Foundation [contracts 1126683, 1506320, 1614839, 1615153], the Natural Sciences and Engineering Research Council of Canada [contract SAPPJ/32-2016], and the Research Foundation – Flanders (FWO). We are grateful to the UCNA collaboration for use of their spectrometer. Research was sponsored by the Laboratory Directed Research and Development Program [project 8215] of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy, and by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics [contracts DE-AC05-00OR2272, DE-AC52-06NA25396, DE-FG02-03ER41258, DE-FG02-ER41042, DE-SC0008107, and DE-SC0014622], the National Science Foundation [contracts 1126683, 1506320, 1614839, 1615153], the Natural Sciences and Engineering Research Council of Canada [contract SAPPJ/32-2016], and the Research Foundation – Flanders (FWO). We are grateful to the UCNA collaboration for use of their spectrometer. This article is part of the Topical Collection on Proceedings of the 7th Symposium on Symmetries in Subatomic Physics (SSP 2018), Aachen, Germany, 10-15 June 2018 Guest Edited by Hans Ströher, Jörg Pretz, Livia Ludhova and Achim Stahl This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
DOE Office of Nuclear Physics	DESC0008107
The Research Foundation Flanders
U. S. Department of Energy
National Science Foundation Arctic Social Science Program	1812367
National Science Foundation Arctic Social Science Program
U.S. Department of Energy EPSCoR
Division of Nuclear Physics	1614839, 1615153, 1126683, 1506320
Division of Nuclear Physics
Office of Science Programs
Institute for Nuclear Physics	DE-AC05-00OR2272, DE-AC52-06NA25396, DE-FG02-ER41042, DE-FG02-03ER41258, DE-SC0008107, DE-SC0014622
Institute for Nuclear Physics
Oak Ridge National Laboratory
Laboratory Directed Research and Development	8215
Laboratory Directed Research and Development
Natural Sciences and Engineering Research Council of Canada	SAPPJ/32-2016
Natural Sciences and Engineering Research Council of Canada
Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada
Fonds Wetenschappelijk Onderzoek

Keywords

Beta spectrum
Neutron beta decay
Nuclear beta decay
Silicon detector

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

Access to Document

10.1007/s10751-018-1538-7

Cite this

Broussard, L. J., Baeßler, S., Bailey, T. L., Birge, N., Bowman, J. D., Crawford, C. B., Cude-Woods, C., Fellers, D. E., Fomin, N., Frlež, E., Gericke, M. T. W., Hayen, L., Jezghani, A. P., Li, H., Macsai, N., Makela, M. F., Mammei, R. R., Mathews, D., McGaughey, P. L., ... Zeck, B. A. (2019). Using Nab to determine correlations in unpolarized neutron decay. Hyperfine Interactions, 240(1), Article 1. https://doi.org/10.1007/s10751-018-1538-7

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abstract = "The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constants λ = gA/gV with precision δλ/λ ∼ 3 × 10− 4 and search for a Fierz term bF at a level ΔbF < 10− 3. The Nab detection system uses thick, large area, segmented silicon detectors to very precisely determine the decay proton{\textquoteright}s time of flight and the decay electron{\textquoteright}s energy in coincidence and reconstruct the correlation between the antineutrino and electron momenta. Excellent understanding of systematic effects affecting timing and energy reconstruction using this detection system are required. To explore these effects, a series of ex situ studies have been undertaken, including a search for a Fierz term at a less sensitive level of ΔbF < 10− 2 in the beta decay of 45Ca using the UCNA spectrometer.",

keywords = "Beta spectrum, Neutron beta decay, Nuclear beta decay, Silicon detector",

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note = "Publisher Copyright: {\textcopyright} 2018, Springer Nature Switzerland AG.",

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Broussard, LJ, Baeßler, S, Bailey, TL, Birge, N, Bowman, JD, Crawford, CB, Cude-Woods, C, Fellers, DE, Fomin, N, Frlež, E, Gericke, MTW, Hayen, L, Jezghani, AP, Li, H, Macsai, N, Makela, MF, Mammei, RR, Mathews, D, McGaughey, PL, Mueller, PE, Počanić, D, Royse, CA, Salas-Bacci, A, Sjue, SKL, Ramsey, JC, Severijns, N, Smith, EC, Wexler, J, Whitehead, RA, Young, AR & Zeck, BA 2019, 'Using Nab to determine correlations in unpolarized neutron decay', Hyperfine Interactions, vol. 240, no. 1, 1. https://doi.org/10.1007/s10751-018-1538-7

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T1 - Using Nab to determine correlations in unpolarized neutron decay

AU - Broussard, L. J.

AU - Baeßler, S.

AU - Bailey, T. L.

AU - Birge, N.

AU - Bowman, J. D.

AU - Crawford, C. B.

AU - Cude-Woods, C.

AU - Fellers, D. E.

AU - Fomin, N.

AU - Frlež, E.

AU - Gericke, M. T.W.

AU - Hayen, L.

AU - Jezghani, A. P.

AU - Li, H.

AU - Macsai, N.

AU - Makela, M. F.

AU - Mammei, R. R.

AU - Mathews, D.

AU - McGaughey, P. L.

AU - Mueller, P. E.

AU - Počanić, D.

AU - Royse, C. A.

AU - Salas-Bacci, A.

AU - Sjue, S. K.L.

AU - Ramsey, J. C.

AU - Severijns, N.

AU - Smith, E. C.

AU - Wexler, J.

AU - Whitehead, R. A.

AU - Young, A. R.

AU - Zeck, B. A.

PY - 2019/6/1

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N2 - The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constants λ = gA/gV with precision δλ/λ ∼ 3 × 10− 4 and search for a Fierz term bF at a level ΔbF < 10− 3. The Nab detection system uses thick, large area, segmented silicon detectors to very precisely determine the decay proton’s time of flight and the decay electron’s energy in coincidence and reconstruct the correlation between the antineutrino and electron momenta. Excellent understanding of systematic effects affecting timing and energy reconstruction using this detection system are required. To explore these effects, a series of ex situ studies have been undertaken, including a search for a Fierz term at a less sensitive level of ΔbF < 10− 2 in the beta decay of 45Ca using the UCNA spectrometer.

AB - The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constants λ = gA/gV with precision δλ/λ ∼ 3 × 10− 4 and search for a Fierz term bF at a level ΔbF < 10− 3. The Nab detection system uses thick, large area, segmented silicon detectors to very precisely determine the decay proton’s time of flight and the decay electron’s energy in coincidence and reconstruct the correlation between the antineutrino and electron momenta. Excellent understanding of systematic effects affecting timing and energy reconstruction using this detection system are required. To explore these effects, a series of ex situ studies have been undertaken, including a search for a Fierz term at a less sensitive level of ΔbF < 10− 2 in the beta decay of 45Ca using the UCNA spectrometer.

KW - Beta spectrum

KW - Neutron beta decay

KW - Nuclear beta decay

KW - Silicon detector

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Using Nab to determine correlations in unpolarized neutron decay

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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