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Scalar interaction limits from the beta-neutrino correlation of trapped radioactive atoms | | A. Gorelov
; D. Melconian
; W.P. Alford
; D. Ashery
; G. Ball
; J.A. Behr
; P.G. Bricault
; J.M. D’Auria
; J. Deutsch
; J. Dilling
; M. Dombsky
; P. Dube’
; J. Fingler
; U. Giesen
; F. Glück
; S. Gu
; O. Häusser
; K.P. Jackson
; B.K. Jennings
; M.R. Pearson
; T.J. Stocki
; T.B. Swanson
; M. Trinczek
; | | Date: |
14 Dec 2004 | | Journal: | Phys.Rev.Lett. 94 (2005) 142501 | | Subject: | nucl-ex | | Affiliation: | Simon Fraser U., U. Western Ontario, Tel Aviv U., TRIUMF U. Catholique de Louvain, KFKI RMKI, Budapest, Hungary | | Abstract: | We have set limits on contributions of scalar interactions to nuclear beta decay. A magneto-optical trap (MOT) provides a localized source of atoms suspended in space, so the low-energy recoiling nuclei can freely escape and be detected in coincidence with the beta. This allows reconstruction of the neutrino momentum, and the measurement of the beta-neutrino correlation, in a more direct fashion than previously possible. The beta-neutrino correlation parameter of the 0+ to 0+ pure Fermi decay of 38mK is $ ilde{a}$=0.9981+-0.0030+-0.0037, consistent with the standard model prediction a=1. | | Source: | arXiv, nucl-ex/0412032 | | Services: | Forum | Review | PDF | Favorites | |
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