Improved limits on Fierz interference using asymmetry measurements from the Ultracold Neutron Asymmetry (UCNA) experiment
The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the β-decay asymmetry parameter, A0, for free neutron decay. In the experiment, polarized ultracold neutrons are transported into a decay trap, and their β-decay electrons are detected with ≈4π acceptance into two detector pac...
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| creator | Sun, X. Adamek, E. Allgeier, B. Bagdasarova, Y. Berguno, D. B. Blatnik, M. Bowles, T. J. Broussard, L. J. Brown, M. A.-P. Carr, R. Clayton, S. Cude-Woods, C. Currie, S. Dees, E. B. Ding, X. Filippone, B. W. García, A. Geltenbort, P. Hasan, S. Hickerson, K. P. Hoagland, J. Hong, R. Holley, A. T. Ito, T. M. Knecht, A. Liu, C.-Y. Liu, J. Makela, M. Mammei, R. Martin, J. W. Melconian, D. Mendenhall, M. P. Moore, S. D. Morris, C. L. Nepal, S. Nouri, N. Pattie, R. W. Pérez Gálvan, A. Phillips, D. G. Picker, R. Pitt, M. L. Plaster, B. Salvat, D. J. Saunders, A. Sharapov, E. I. Sjue, S. Slutsky, S. Sondheim, W. Swank, C. Tatar, E. Vogelaar, R. B. VornDick, B. Wang, Z. Wei, W. Wexler, J. W. Womack, T. Wrede, C. Young, A. R. Zeck, B. A. |
| description | The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the β-decay asymmetry parameter, A0, for free neutron decay. In the experiment, polarized ultracold neutrons are transported into a decay trap, and their β-decay electrons are detected with ≈4π acceptance into two detector packages which provide position and energy reconstruction. The experiment also has sensitivity to bn, the Fierz interference term in the neutron β-decay rate. In this work, we determine bn from the energy dependence of A0 using the data taken during the UCNA 2011–2013 run. In addition, we present the same type of analysis using the earlier 2010 A dataset. Motivated by improved statistics and comparable systematic errors compared to the 2010 data-taking run, we present a new bn measurement using the weighted average of our asymmetry dataset fits, to obtain bn=0.066±0.041stat±0.024syst which corresponds to a limit of −0.012 |
| doi_str_mv | 10.1103/PhysRevC.101.035503 |
| format | Article |
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B. ; Blatnik, M. ; Bowles, T. J. ; Broussard, L. J. ; Brown, M. A.-P. ; Carr, R. ; Clayton, S. ; Cude-Woods, C. ; Currie, S. ; Dees, E. B. ; Ding, X. ; Filippone, B. W. ; García, A. ; Geltenbort, P. ; Hasan, S. ; Hickerson, K. P. ; Hoagland, J. ; Hong, R. ; Holley, A. T. ; Ito, T. M. ; Knecht, A. ; Liu, C.-Y. ; Liu, J. ; Makela, M. ; Mammei, R. ; Martin, J. W. ; Melconian, D. ; Mendenhall, M. P. ; Moore, S. D. ; Morris, C. L. ; Nepal, S. ; Nouri, N. ; Pattie, R. W. ; Pérez Gálvan, A. ; Phillips, D. G. ; Picker, R. ; Pitt, M. L. ; Plaster, B. ; Salvat, D. J. ; Saunders, A. ; Sharapov, E. I. ; Sjue, S. ; Slutsky, S. ; Sondheim, W. ; Swank, C. ; Tatar, E. ; Vogelaar, R. B. ; VornDick, B. ; Wang, Z. ; Wei, W. ; Wexler, J. W. ; Womack, T. ; Wrede, C. ; Young, A. R. ; Zeck, B. A.</creator><creatorcontrib>Sun, X. ; Adamek, E. ; Allgeier, B. ; Bagdasarova, Y. ; Berguno, D. B. ; Blatnik, M. ; Bowles, T. J. ; Broussard, L. J. ; Brown, M. A.-P. ; Carr, R. ; Clayton, S. ; Cude-Woods, C. ; Currie, S. ; Dees, E. B. ; Ding, X. ; Filippone, B. W. ; García, A. ; Geltenbort, P. ; Hasan, S. ; Hickerson, K. P. ; Hoagland, J. ; Hong, R. ; Holley, A. T. ; Ito, T. M. ; Knecht, A. ; Liu, C.-Y. ; Liu, J. ; Makela, M. ; Mammei, R. ; Martin, J. W. ; Melconian, D. ; Mendenhall, M. P. ; Moore, S. D. ; Morris, C. L. ; Nepal, S. ; Nouri, N. ; Pattie, R. W. ; Pérez Gálvan, A. ; Phillips, D. G. ; Picker, R. ; Pitt, M. L. ; Plaster, B. ; Salvat, D. J. ; Saunders, A. ; Sharapov, E. I. ; Sjue, S. ; Slutsky, S. ; Sondheim, W. ; Swank, C. ; Tatar, E. ; Vogelaar, R. B. ; VornDick, B. ; Wang, Z. ; Wei, W. ; Wexler, J. W. ; Womack, T. ; Wrede, C. ; Young, A. R. ; Zeck, B. A. ; UCNA Collaboration</creatorcontrib><description>The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the β-decay asymmetry parameter, A0, for free neutron decay. In the experiment, polarized ultracold neutrons are transported into a decay trap, and their β-decay electrons are detected with ≈4π acceptance into two detector packages which provide position and energy reconstruction. The experiment also has sensitivity to bn, the Fierz interference term in the neutron β-decay rate. In this work, we determine bn from the energy dependence of A0 using the data taken during the UCNA 2011–2013 run. In addition, we present the same type of analysis using the earlier 2010 A dataset. Motivated by improved statistics and comparable systematic errors compared to the 2010 data-taking run, we present a new bn measurement using the weighted average of our asymmetry dataset fits, to obtain bn=0.066±0.041stat±0.024syst which corresponds to a limit of −0.012<bn<0.144 at the 90% confidence level.</description><identifier>ISSN: 2469-9985</identifier><identifier>EISSN: 2469-9993</identifier><identifier>DOI: 10.1103/PhysRevC.101.035503</identifier><language>eng</language><publisher>United States: American Physical Society</publisher><subject>Nuclear Experiment ; Physics</subject><ispartof>Phys.Rev.C, 2020-03, Vol.101 (3), Article 035503</ispartof><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-a8d96f41408d97ab8cbbd2e133194bd5d11438c3bd3b055f36f7d1fd6b989ff13</citedby><cites>FETCH-LOGICAL-c355t-a8d96f41408d97ab8cbbd2e133194bd5d11438c3bd3b055f36f7d1fd6b989ff13</cites><orcidid>0000-0001-8817-4643 ; 0000000188174643</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,2876,2877,27924,27925</link.rule.ids><backlink>$$Uhttps://hal.science/hal-02440970$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1604864$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Sun, X.</creatorcontrib><creatorcontrib>Adamek, E.</creatorcontrib><creatorcontrib>Allgeier, B.</creatorcontrib><creatorcontrib>Bagdasarova, Y.</creatorcontrib><creatorcontrib>Berguno, D. 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In the experiment, polarized ultracold neutrons are transported into a decay trap, and their β-decay electrons are detected with ≈4π acceptance into two detector packages which provide position and energy reconstruction. The experiment also has sensitivity to bn, the Fierz interference term in the neutron β-decay rate. In this work, we determine bn from the energy dependence of A0 using the data taken during the UCNA 2011–2013 run. In addition, we present the same type of analysis using the earlier 2010 A dataset. Motivated by improved statistics and comparable systematic errors compared to the 2010 data-taking run, we present a new bn measurement using the weighted average of our asymmetry dataset fits, to obtain bn=0.066±0.041stat±0.024syst which corresponds to a limit of −0.012<bn<0.144 at the 90% confidence level.</description><subject>Nuclear Experiment</subject><subject>Physics</subject><issn>2469-9985</issn><issn>2469-9993</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNo9UU1PAjEU3BhNJMgv8NJ4kgPY0u6yPW6ICAlBY-TcdNtXt2Y_SFuI66-3BOX0Ji8zk_dmkuSe4CkhmD69Vb1_h-NiSjCZYpqmmF4lgxnL-IRzTq8vOE9vk5H3XxhjkmE-J3iQ9Otm77ojaFTbxgaPuhYtLbgfZNsAzoCDVgE6eNt-Iun7poHgetSA9AcHDbRRYlzXoFAB2tXBSdXVGm3hEFy0Ki6Kx91iW4wRfO_B2ZPuLrkxsvYw-pvDZLd8_lisJpvXl_Wi2ExUfCVMZK55ZhhhOIK5LHNVlnoGhFLCWalTTQijuaKlpiVOU0MzM9fE6KzkOTeG0GHycPbtfLDCKxtAVaprW1BBxBxYnrFIGp9JlazFPh4oXS86acWq2IjTDs8Yi5Hh48mQnrnKdd47MBcBweLUiPhvJC6IODdCfwHfv4I3</recordid><startdate>20200316</startdate><enddate>20200316</enddate><creator>Sun, X.</creator><creator>Adamek, E.</creator><creator>Allgeier, B.</creator><creator>Bagdasarova, Y.</creator><creator>Berguno, D. 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A.</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0001-8817-4643</orcidid><orcidid>https://orcid.org/0000000188174643</orcidid></search><sort><creationdate>20200316</creationdate><title>Improved limits on Fierz interference using asymmetry measurements from the Ultracold Neutron Asymmetry (UCNA) experiment</title><author>Sun, X. ; Adamek, E. ; Allgeier, B. ; Bagdasarova, Y. ; Berguno, D. B. ; Blatnik, M. ; Bowles, T. J. ; Broussard, L. J. ; Brown, M. A.-P. ; Carr, R. ; Clayton, S. ; Cude-Woods, C. ; Currie, S. ; Dees, E. B. ; Ding, X. ; Filippone, B. W. ; García, A. ; Geltenbort, P. ; Hasan, S. ; Hickerson, K. P. ; Hoagland, J. ; Hong, R. ; Holley, A. T. ; Ito, T. M. ; Knecht, A. ; Liu, C.-Y. ; Liu, J. ; Makela, M. ; Mammei, R. ; Martin, J. W. ; Melconian, D. ; Mendenhall, M. P. ; Moore, S. D. ; Morris, C. L. ; Nepal, S. ; Nouri, N. ; Pattie, R. 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A.</au><aucorp>UCNA Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improved limits on Fierz interference using asymmetry measurements from the Ultracold Neutron Asymmetry (UCNA) experiment</atitle><jtitle>Phys.Rev.C</jtitle><date>2020-03-16</date><risdate>2020</risdate><volume>101</volume><issue>3</issue><artnum>035503</artnum><issn>2469-9985</issn><eissn>2469-9993</eissn><abstract>The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the β-decay asymmetry parameter, A0, for free neutron decay. In the experiment, polarized ultracold neutrons are transported into a decay trap, and their β-decay electrons are detected with ≈4π acceptance into two detector packages which provide position and energy reconstruction. The experiment also has sensitivity to bn, the Fierz interference term in the neutron β-decay rate. In this work, we determine bn from the energy dependence of A0 using the data taken during the UCNA 2011–2013 run. In addition, we present the same type of analysis using the earlier 2010 A dataset. Motivated by improved statistics and comparable systematic errors compared to the 2010 data-taking run, we present a new bn measurement using the weighted average of our asymmetry dataset fits, to obtain bn=0.066±0.041stat±0.024syst which corresponds to a limit of −0.012<bn<0.144 at the 90% confidence level.</abstract><cop>United States</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevC.101.035503</doi><orcidid>https://orcid.org/0000-0001-8817-4643</orcidid><orcidid>https://orcid.org/0000000188174643</orcidid><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_osti_scitechconnect_1604864 |
| source | American Physical Society Journals |
| subjects | Nuclear Experiment Physics |
| title | Improved limits on Fierz interference using asymmetry measurements from the Ultracold Neutron Asymmetry (UCNA) experiment |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-02T06%3A33%3A33IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-hal_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Improved%20limits%20on%20Fierz%20interference%20using%20asymmetry%20measurements%20from%20the%20Ultracold%20Neutron%20Asymmetry%20(UCNA)%20experiment&rft.jtitle=Phys.Rev.C&rft.au=Sun,%20X.&rft.aucorp=UCNA%20Collaboration&rft.date=2020-03-16&rft.volume=101&rft.issue=3&rft.artnum=035503&rft.issn=2469-9985&rft.eissn=2469-9993&rft_id=info:doi/10.1103/PhysRevC.101.035503&rft_dat=%3Chal_osti_%3Eoai_HAL_hal_02440970v1%3C/hal_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |