Coherent single pion production by antineutrino charged current interactions and test of PCAC
Zeitschrift für Physik C Particles and Fields 31:2 (1986) 191-197
Abstract:
The cross section for coherent production of a single π- meson in charged current antineutrino interactions on neon nuclei has been measured in BEBC to be (175±25) 10-40 cm2/neon nucleus, averaged over the energy spectrum of the antineutrino wide band beam at the CERN SPS; this corresponds to (0.9±0.1) % of the total charged current {Mathematical expression} cross section. The distributions of kinematical variables are in agreement with theoretical predictions based on the PCAC hypothesis and the meson dominance model; in particular, the Q2 dependence is well described by a propagator containing a mass m=(1.35±0.18) GeV. The absolute value of the cross section is also in agreement with the model. This analysis thus provides a test of the PCAC hypothesis in the antineutrino energy range 5-150 GeV. © 1986 Springer-Verlag.Decay D0→φK¯0
Physical Review Letters American Physical Society (APS) 56:18 (1986) 1893-1896
Measurement of the Direct Photon Spectrum from the ϒ(1S)
Physical Review Letters American Physical Society (APS) 56:12 (1986) 1222-1225
Evidence for higher twist effects in fast π- production by antineutrinos in neon
Zeitschrift Fur Physik C Particles and Fields 31:1 (1986) 51-58
Abstract:
Evidence for a significant higher twist contribution to high z π- production in antineutrino scattering is presented. In events with W>3 GeV and Q2>1 GeV2 in our data, it accounts for (51 ±8)% of all π- with z above 0.5. It is consistent with the z-Q2 correlations of Berger's higher twist prediction. The data are inconclusive concerning the predicted y-z correlation and pInclusive φ production in B-meson decay
Physical Review Letters American Physical Society (APS) 56:8 (1986) 800-803