997 lines
81 KiB
Text
997 lines
81 KiB
Text
<!DOCTYPE html>
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<html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# ">
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<h1 class="nist-page__title">Progress on the BL2 beam measurement of the neutron lifetime</h1>
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<div class="nist-field__label">Published</div>
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<div class="nist-field__item"><time datetime="2021-04-17T12:00:00Z">April 17, 2021</time>
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<h3 class="nist-field__label">Author(s)</h3>
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<div class="nist-field__item"><span class="nist-author">Shannon M. Hoogerheide</span>, <span class="nist-author">Jimmy P. Caylor</span>, <span class="nist-author">Evan R. Adamek</span>, Eamon S. Anderson, Ripan Biswas, B. E. Crawford, Christina DeAngelis, <span class="nist-author">Maynard S. Dewey</span>, N Fomin, <span class="nist-author">David M. Gilliam</span>, Kyle Grammer, G L. Greene, <span class="nist-author">Robert W. Haun</span>, Jonathan Mulholland, <span class="nist-author">Hans Pieter Mumm</span>, <span class="nist-author">Jeffrey S. Nico</span>, William M. Snow, F E. Wietfeldt, Andrew Yue</div>
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<h3>Abstract</h3>
|
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A precise value of the neutron lifetime is important in several areas of physics, including determinations of the quark-mixing matrix element |Vud|, related tests of the Standard Model, and predictions of light element abundances in Big Bang Nucleosynthesis models. We report the progress on a new measurement of the neutron lifetime utilizing the cold neutron beam technique. Several experimental improvements in both neutron and proton counting that have been developed over the last decade are presented. This new effort should yield a final uncertainty on the lifetime of 1 s with an improved understanding of the systematic effects.
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<div class="nist-field__item">EPJ Web of Conferences</div>
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<div class="nist-field__label">Volume</div>
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<div class="nist-field__item">219</div>
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<div class="nist-field__item"><a href="https://dx.doi.org/10.1051/epjconf/201921903002" target="_blank">https://dx.doi.org/10.1051/epjconf/201921903002</a></div>
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<h3 class="nist-field__label">Keywords</h3>
|
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<div class="nist-field__item">neutron lifetime, cold neutrons, weak interactions, fundamental symmetries</div>
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>Citation</h2>
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<article class="bibcite-reference">
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<div class="bibcite-citation">
|
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Hoogerheide, S.
|
||
, Caylor, J.
|
||
, Adamek, E.
|
||
, Anderson, E.
|
||
, Biswas, R.
|
||
, Crawford, B.
|
||
, DeAngelis, C.
|
||
, Dewey, M.
|
||
, Fomin, N.
|
||
, Gilliam, D.
|
||
, Grammer, K.
|
||
, Greene, G.
|
||
, Haun, R.
|
||
, Mulholland, J.
|
||
, , H.
|
||
, Nico, J.
|
||
, Snow, W.
|
||
, Wietfeldt, F.
|
||
and Yue, A.
|
||
|
||
(2021),
|
||
Progress on the BL2 beam measurement of the neutron lifetime, EPJ Web of Conferences, [online], https://dx.doi.org/10.1051/epjconf/201921903002, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=926967
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(Accessed March 4, 2025)
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<li><a href="https://scholar.google.com/scholar?btnG=Search%2BScholar&as_q=%22Progress%2Bon%2Bthe%2BBL2%2Bbeam%2Bmeasurement%2Bof%2Bthe%2Bneutron%2Blifetime%22&as_occt=any&as_epq=&as_oq=&as_eq=&as_publication=&as_ylo=&as_yhi=&as_sdtAAP=1&as_sdtp=1">Google Scholar</a></li>
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If you have any questions about this publication or are having problems accessing it, please contact <a href="mailto:reflib@nist.gov" class="usa-link">reflib@nist.gov</a>.
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<div class="text-italic font-sans-2xs">
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Created April 17, 2021, Updated May 3, 2021
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