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The neutrino program at LAMPF [electronic resource].

Published
Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (17 pages) : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
There are two neutrino experiments that this paper discusses: the first experiment is designed to verify the interference between charged and neutral current amplitudes in ν{sub e}- e scattering. The experiment is situated at 90° to the beam stop, and detected recoil electrons from neutrino electron scattering. The experiment is sensitive to recoil electrons from ν{sub μ}, ν{sub e}, {bar ν}{sub μ} but the cross section for ν{sub e} - e scattering is the dominant contribution. The magnitude of this cross section depends on the size of the interference term between charged and neutral current scattering, and the value for this term is −1.07 {plus minus} 0.017 {plus minus} 0.11 to be compared to −1.08 from standard electroweak theory with sin²θ{sub W} = 0.23. The observation of this interference is unique to this experiment. The second experiment, which is presently finishing data analysis after concluding data taking in 1989, is a search for neutrino oscillations of the type {bar ν}{sub mu} → {bar ν}{sub e}. The experiment was designed to search for the reaction {bar ν}{sub e} + p → e⁺ + n, which has a large relative cross section compared to that on complex nuclei due to the absence of Pauli Suppression of the reaction on free nucleons producing electrons in the energy range 30--50 MeV in contrast to the dominant background from ν{sub e} + ¹²C → e⁺ + ¹²N, in which the electron energies are limited to 30 MeV from the Q value of the reaction. 5 refs., 13 figs.
Report Numbers
E 1.99:la-ur-90-106
E 1.99: conf-8911165--1
conf-8911165--1
la-ur-90-106
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Other Subject(s)
Note
Published through SciTech Connect.
01/01/1989.
"la-ur-90-106"
" conf-8911165--1"
"DE90007888"
International seminar on intermediate energy physics (INES-89), Moscow (USSR), 27-30 Nov 1989.
White, D.H.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14715421