First Measurement of the Neutron beta Asymmetry with Ultracold Neutrons

dc.contributorVirginia Techen
dc.contributor.authorPattie, R. W.en
dc.contributor.authorAnaya, J.en
dc.contributor.authorBack, H. O.en
dc.contributor.authorBoissevain, J. G.en
dc.contributor.authorBowles, T. J.en
dc.contributor.authorBroussard, L. J.en
dc.contributor.authorCarr, Rachel E.en
dc.contributor.authorClark, D. J.en
dc.contributor.authorCurrie, S.en
dc.contributor.authorDu, S.en
dc.contributor.authorFilippone, B. W.en
dc.contributor.authorGeltenbort, P.en
dc.contributor.authorGarcia, A.en
dc.contributor.authorHawari, A.en
dc.contributor.authorHickerson, K. P.en
dc.contributor.authorHill, R.en
dc.contributor.authorHino, M.en
dc.contributor.authorHoedl, S. A.en
dc.contributor.authorHogan, G. E.en
dc.contributor.authorHolley, A. T.en
dc.contributor.authorIto, T. M.en
dc.contributor.authorKawai, T.en
dc.contributor.authorKirch, K.en
dc.contributor.authorKitagaki, S.en
dc.contributor.authorLamoreaux, S. K.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.authorMeier, N.en
dc.contributor.authorMendenhall, M. P.en
dc.contributor.authorMorris, C. L.en
dc.contributor.authorMortensen, R.en
dc.contributor.authorPichlmaier, A.en
dc.contributor.authorPitt, M. L.en
dc.contributor.authorPlaster, B.en
dc.contributor.authorRamsey, J. C.en
dc.contributor.authorRios, R.en
dc.contributor.authorSabourov, K.en
dc.contributor.authorSallaska, A. L.en
dc.contributor.authorSaunders, A.en
dc.contributor.authorSchmid, R.en
dc.contributor.authorSeestrom, S. J.en
dc.contributor.authorServicky, C.en
dc.contributor.authorSjue, S. K. L.en
dc.contributor.authorSmith, D.en
dc.contributor.authorSondheim, W. E.en
dc.contributor.authorTatar, E.en
dc.contributor.authorTeasdale, W.en
dc.contributor.authorTerai, C.en
dc.contributor.authorTipton, B.en
dc.contributor.authorUtsuro, M.en
dc.contributor.authorVogelaar, R. Bruceen
dc.contributor.authorWehring, B. W.en
dc.contributor.authorXu, Y. P.en
dc.contributor.authorYoung, A. R.en
dc.contributor.authorYuan, J.en
dc.contributor.authorUcna Collaborationen
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-10en
dc.date.accessioned2013-12-10T17:31:19Zen
dc.date.available2013-12-10T17:31:19Zen
dc.date.issued2009-01-09en
dc.description.abstractWe report the first measurement of an angular correlation parameter in neutron beta decay using polarized ultracold neutrons (UCN). We utilize UCN with energies below about 200 neV, which we guide and store for similar to 30 s in a Cu decay volume. The interaction of the neutron magnetic dipole moment with a static 7 T field external to the decay volume provides a 420 neV potential energy barrier to the spin state parallel to the field, polarizing the UCN before they pass through an adiabatic fast passage spin flipper and enter a decay volume, situated within a 1 T field in a 2 x 2 pi solenoidal spectrometer. We determine a value for the beta-asymmetry parameter A(0) = -0.1138 +/- 0.0046 +/- 0.0021.en
dc.description.sponsorshipDepartment of Energyen
dc.description.sponsorshipNational Science Foundationen
dc.description.sponsorshipLos Alamos National Laboratory LDRDen
dc.identifier.citationPattie, R. W., Jr. ; Anaya, J. ; Back, H. O. ; et al., Jan 9, 2009. “First Measurement of the Neutron beta Asymmetry with Ultracold Neutrons,” PHYSICAL REVIEW LETTERS 102(1): 012301. DOI: 10.1103/PhysRevLett.102.012301en
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.102.012301en
dc.identifier.issn0031-9007en
dc.identifier.urihttp://hdl.handle.net/10919/24510en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.102.012301en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectpolarized neutronsen
dc.subjectga-gven
dc.subjectdecayen
dc.subjecttestsen
dc.subjectprecisionen
dc.subjectmodelen
dc.subjectPhysicsen
dc.titleFirst Measurement of the Neutron beta Asymmetry with Ultracold Neutronsen
dc.title.serialPhysical Review Lettersen
dc.typeArticle - Refereeden
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