Single pion production in charged currentbar vD interactions at high energies
Abstract
The reactionsbar vD to μ ^ + nπ ^ - (p_s ) andbar vD to μ ^ + pπ (n_s ) have been studied at antineutrino energies varying from 5 to 200 GeV. The cross sections for these reactions were determined from 545 and 300 selected events for each channel respectively. The first reaction was used for the study of the decay properties of the Δ resonance that dominates this channel. The experimental results have been compared with the theoretical predictions of Rein and Sehgal [9] and of Fogli and Nardulli [10]. Using the first model we obtained for the axial form factor parameter M a =1.01±0.05 GeV/c2. With this value the model is in agreement with the experimental dσ/ dQ 2 distributions for Q 2>0.25 GeV2 and with the distributions of the invariant hadronic mass W. The isospin structure of the one-pion production has been investigated and compared with the results of other experiments.
- Publication:
-
Zeitschrift fur Physik C Particles and Fields
- Pub Date:
- June 1983
- DOI:
- 10.1007/BF01573212
- Bibcode:
- 1983ZPhyC..20...95A