1987/02/01 by L. A. Ahrens, S. H. Aronson, P. L. Connolly +31 · 13 citations
Physics and Astronomy · #Particle physics theoretical and experimental studies #Neutrino Physics Research #Astrophysics and Cosmic Phenomena
paper · doi:10.1103/physrevd.35.785
openalex publication_date 1987/02/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Measurements of the semileptonic weak-neutral-current reactions \ensuremathν_\ensuremathμp\ensuremath→\ensuremathν_\ensuremathμp and \ensuremathν\ifmmode\else\textasciimacron\fi_\ensuremathμp\ensuremath→\ensuremathν\ifmmode\else\textasciimacron\fi_\ensuremathμp are presented. The experiment was performed using a 170-metric-ton high-resolution target detector in the BNL wide-band neutrino beam. High-statistics samples yield the absolute differential cross sections d\ensuremathσ(\ensuremathν_\ensuremathμp)/dQ2 and d\ensuremathσ(\ensuremathν\ifmmode\else\textasciimacron\fi_\ensuremathμp)/dQ2. A measurement of the axial-vector form factor GA(Q2) is also presented. The results are in good agreement with the standard model SU(2)\ifmmode×\else\texttimes\fiU(1). The weak-neutral-current parameter sin2thetaW is determined to be sin2\mathrm\ensuremathθW=0.220\ifmmode±\else\textpm\fi0.016(stat)_\mathrm\ensuremath-0.031+0.023(syst).