The polarization of positive muons produced in charged current interactions of high-energy antineutrinos in iron has been measured at an average momentum transfer of 〈Q2〉 = 3.2 GeV2. The muon spin is found to be oriented forward with respect to the muon momentum vector with an average polarization of 1.09 ± 0.22, consistent with helicity +1. It is concluded that the weak leptonic charged current retains its dominant vector and axial vector structure at high energies.
Polarization of positive muons produced in high-energy antineutrino interactions
FERRONI, Fernando
1979-01-01
Abstract
The polarization of positive muons produced in charged current interactions of high-energy antineutrinos in iron has been measured at an average momentum transfer of 〈Q2〉 = 3.2 GeV2. The muon spin is found to be oriented forward with respect to the muon momentum vector with an average polarization of 1.09 ± 0.22, consistent with helicity +1. It is concluded that the weak leptonic charged current retains its dominant vector and axial vector structure at high energies.File in questo prodotto:
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