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Open Access Publications from the University of California

Measurement of Charged Pions from Neutrino-produced Nuclear Resonance

  • Author(s): Simon, Clifford
  • Advisor(s): Casper, David
  • et al.

A method for identifying stopped pions in a high-resolution scintillator bar detector is presented. I apply my technique to measure the axial mass MAΔ for production of the Δ(1232) resonance by neutrino, with the result MAΔ = 1.16 ± 0.20 GeV (68% CL) (limited by statistics). The result is produced from the measured spectrum of reconstructed momentum-transfer Q2. I proceed by varying the value of MAΔ in a Rein-Sehgal-based Monte Carlo to produce the best agreement, using shape only (not normalization). The consistency of this result with recent reanalyses of previous bubble-chamber experiments is discussed.

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