Measurement of the neutron beta-asymmetry parameter A(0) with ultracold neutrons

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dc.contributorVirginia Techen
dc.contributor.authorPlaster, B.en
dc.contributor.authorRios, R.en
dc.contributor.authorBack, H. O.en
dc.contributor.authorBowles, T. J.en
dc.contributor.authorBroussard, L. J.en
dc.contributor.authorCarr, Rachel E.en
dc.contributor.authorClayton, S.en
dc.contributor.authorCurrie, S.en
dc.contributor.authorFilippone, B. W.en
dc.contributor.authorGarcia, A.en
dc.contributor.authorGeltenbort, P.en
dc.contributor.authorHickerson, K. P.en
dc.contributor.authorHoagland, J.en
dc.contributor.authorHogan, G. E.en
dc.contributor.authorHona, B.en
dc.contributor.authorHolley, A. T.en
dc.contributor.authorIto, T. M.en
dc.contributor.authorLiu, C. Y.en
dc.contributor.authorLiu, J.en
dc.contributor.authorMakela, M.en
dc.contributor.authorMammei, R. R.en
dc.contributor.authorMartin, J. W.en
dc.contributor.authorMelconian, D.en
dc.contributor.authorMendenhall, M. P.en
dc.contributor.authorMorris, C. L.en
dc.contributor.authorMortensen, R.en
dc.contributor.authorPattie, R. W.en
dc.contributor.authorGalvan, A. P.en
dc.contributor.authorPitt, M. L.en
dc.contributor.authorRamsey, J. C.en
dc.contributor.authorRussell, R.en
dc.contributor.authorSaunders, A.en
dc.contributor.authorSchmid, R.en
dc.contributor.authorSeestrom, S. J.en
dc.contributor.authorSjue, S.en
dc.contributor.authorSondheim, W. E.en
dc.contributor.authorTatar, E.en
dc.contributor.authorTipton, B.en
dc.contributor.authorVogelaar, R. Bruceen
dc.contributor.authorVornDick, B.en
dc.contributor.authorWrede, C.en
dc.contributor.authorXu, Y. P.en
dc.contributor.authorYan, H.en
dc.contributor.authorYoung, A. R.en
dc.contributor.authorYuan, J.en
dc.contributor.authorUcna Collaborationen
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-11en
dc.date.accessioned2013-12-18T19:26:51Zen
dc.date.available2013-12-18T19:26:51Zen
dc.date.issued2012-11-12en
dc.description.abstractWe present a detailed report of a measurement of the neutron beta-asymmetry parameter A(0), the parity-violating angular correlation between the neutron spin and the decay electron momentum, performed with polarized ultracold neutrons (UCN). UCN were extracted from a pulsed spallation solid deuterium source and polarized via transport through a 7-T magnetic field. The polarized UCN were then transported through an adiabatic-fast-passage spin-flipper field region, prior to storage in a cylindrical decay volume situated within a 1-T 2 x 2 pi solenoidal spectrometer. The asymmetry was extracted from measurements of the decay electrons in multiwire proportional chamber and plastic scintillator detector packages located on both ends of the spectrometer. From an analysis of data acquired during runs in 2008 and 2009, we report A(0) = -0.11966 +/- 0.00089(-0.00140)(+0.00123), from lambda = g(A)/g(V) = -1.27590 +/- 0.00239(-0.00377)(+0.00331). Complete details of the analysis are presented.en
dc.description.sponsorshipDepartment of Energy Office of Nuclear Physics DE-FG02-08ER41557en
dc.description.sponsorshipNational Science Foundation NSF-0555674, NSF-0855538, NSF-0653222, NSF-1005233en
dc.description.sponsorshipLos Alamos National Laboratory LDRD programen
dc.description.sponsorshipLANSCE division of Los Alamos National Laboratoryen
dc.description.sponsorshipAOT division of Los Alamos National Laboratoryen
dc.identifier.citationPlaster, B. ; Rios, R. ; Back, H. O. ; et al., Nov 12, 2012. “Measurement of the neutron beta-asymmetry parameter A(0) with ultracold neutrons,” PHYSICAL REVIEW C 86(5): 055501. DOI: 10.1103/PhysRevC.86.055501en
dc.identifier.doihttps://doi.org/10.1103/PhysRevC.86.055501en
dc.identifier.issn0556-2813en
dc.identifier.urihttp://hdl.handle.net/10919/24727en
dc.identifier.urlhttp://prc.aps.org/pdf/PRC/v86/i5/e055501en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectinelastically scattered neutronsen
dc.subjectmultiwire proportional chamberen
dc.subjectpolarized neutronsen
dc.subjectcold neutronsen
dc.subjectemission asymmetryen
dc.subjectsolid deuteriumen
dc.subjectdecayen
dc.subjectlifetimeen
dc.subjecttestsen
dc.subjectspectrometeren
dc.subjectPhysicsen
dc.titleMeasurement of the neutron beta-asymmetry parameter A(0) with ultracold neutronsen
dc.title.serialPhysical Review Cen
dc.typeArticle - Refereeden

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