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arxiv: 1410.5311 · v1 · pith:WI6URKJRnew · submitted 2014-10-20 · ⚛️ nucl-ex · physics.ins-det

Determination of the Free Neutron Lifetime

J. David Bowman , L. J. Broussard , S. M. Clayton , M. S. Dewey , N. Fomin , K. B. Grammer , G. L. Greene , P. R. Huffman
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A. T. Holley G. L. Jones C.-Y. Liu M. Makela M. P. Mendenhall C. L. Morris J. Mulholland K. M. Nollett R. W. Pattie Jr. S. Penttila M. Ramsey-Musolf D. J. Salvat A. Saunders S. J. Seestrom W. M. Snow A. Steyerl F. E. Wietfeldt A. R. Young A. T. Yue
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classification ⚛️ nucl-ex physics.ins-det
keywords achieveeffortsfreelifetimeneutronseconduncertaintiesaccurate
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We present the status of current US experimental efforts to measure the lifetime of the free neutron by the "beam" and "bottle" methods. BBN nucleosynthesis models require accurate measurements with 1 second uncertainties, which are currently feasible. For tests of physics beyond the standard model, future efforts will need to achieve uncertainties well below 1 second. We outline paths achieve both.

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