Published December 12, 2019
| Version Published
Journal Article
Open
Status of the UCNτ experiment
Creators
- Pattie, R. W., Jr.1, 2
- Callahan, N. B.3
- Cude-Woods, C.1, 4
- Adamek, E. R.3
- Adams, M.5
- Barlow, D.1
- Blatnik, M.6
- Bowman, D.7
- Broussard, L. J.7
- Clayton, S.1
- Currie, S.1
- Dees, E. B.4
- Ding, X.8
- Fellers, D.1
- Fox, W.3
- Fries, E.6
- Gonzalez, F.3
- Geltenbort, P.9
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Hickerson, K. P.6
- Hoffbauer, M. A.1
- Hoffman, K.5
- Holley, A. T.5
- Howard, D.5
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Ito, T. M.1
- Komives, A.10
- Liu, C. Y.3
- Makela, M.1
- Medina, J.1
- Morley, D.1
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Morris, C. L.1
- O'Connor, T.3
- Penttilä, S. I.7
- Ramsey, J. C.1, 7
- Roberts, A.1
- Salvat, D.11
- Saunders, A.1
- Seestrom, S. J.1
- Sharapov, E. I.12
- Sjue, S. K. L.1
- Snow, W. M.3
- Sprow, A.13
- Vanderwerp, J.3
- Vogelaar, B.8
- P.L., Walstrom1
- Wang, Z.1
- Weaver, H.1
- Wexler, J.4
- Womack, T. L.1
- Young, A. R.4
- Zeck, B. A.4
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1.
Los Alamos National Laboratory
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2.
East Tennessee State University
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3.
Indiana University Bloomington
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4.
North Carolina State University
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5.
Tennessee Technological University
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6.
California Institute of Technology
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7.
Oak Ridge National Laboratory
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8.
Virginia Tech
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9.
Institut Laue-Langevin
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10.
DePauw University
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11.
University of Washington
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12.
Joint Institute for Nuclear Research
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13.
University of Kentucky
Abstract
The neutron is the simplest nuclear system that can be used to probe the structure of the weak interaction and search for physics beyond the standard model. Measurements of neutron lifetime and β-decay correlation coefficients with precisions of 0.02% and 0.1%, respectively, would allow for stringent constraints on new physics. The UCNτ experiment uses an asymmetric magneto-gravitational UCN trap with in situ counting of surviving neutrons to measure the neutron lifetime, τ_n = 877.7s (0.7s)_(stat) (+0.4/−0.2s)_(sys). We discuss the recent result from UCNτ, the status of ongoing data collection and analysis, and the path toward a 0.25 s measurement of the neutron lifetime with UCNτ.
Additional Information
© 2019 The Authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Published online 12 December 2019. The UCNτ collaboration would like to thank the LANSCE accelerator operators and staff, without their dedication and expertise this experiment would not have been possible. This work was supported by the Los Alamos Laboratory Directed Research and Development (LDRD) office (no. 20140568DR), the LDRD Program of Oak Ridge National Laboratory, managed by UT-Battelle (no. 8215), the National Science Foundation (nos. 130692, 1307426, 161454, 1306997, and 1553861), NIST Precision Measurement Grant, IU Center for Space Time Symmetries (IUCSS), the LANSCE Rosen Scholarship program, and U.S. DOE Low Energy Nuclear Physics (nos. DE-FG02-97ER41042 and DE-AC05-00OR22725).Attached Files
Published - epjconf-ppns2019_03004.pdf
Files
epjconf-ppns2019_03004.pdf
Additional details
Identifiers
- Eprint ID
- 101788
- Resolver ID
- CaltechAUTHORS:20200309-132600389
Funding
- Los Alamos National Laboratory
- 20140568DR
- Oak Ridge National Laboratory
- 8215
- NSF
- PHY-130692
- NSF
- PHY-1307426
- NSF
- PHY-161454
- NSF
- PHY-1306997
- NSF
- PHY-1553861
- National Institute of Standards and Technology (NIST)
- IU Center for Space Time Symmetries (IUCSS)
- LANSCE Rosen Scholarship Program
- Department of Energy (DOE)
- DE-FG02-97ER41042
- Department of Energy (DOE)
- DE-AC05-00OR22725
Dates
- Created
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2020-03-09Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field