2011/02/28 by N. Abgrall, A. Aduszkiewicz, B. Andrieu +168 · 177 citations
Physics and Astronomy · #Atomic physics #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Proton #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Spectral line #hep-ex
paper · pdf · doi:10.1103/physrevc.84.034604
published in Physical Review C 84(3) (American Institute of Physics) · updated version; as published by Phys. Rev. C
arxiv created 2011/09/06 · openalex publication_date 2011/09/06 · arxiv updated 2015/03/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large-acceptance NA61/SHINE spectrometer at the CERN SPS. These data are required to improve predictions of the neutrino flux for the T2K long-baseline neutrino oscillation experiment in Japan. A set of data collected during the first NA61/SHINE run in 2007 with an isotropic graphite target with a thickness of 4% of a nuclear interaction length was used for the analysis. The measured p+C inelastic and production cross sections are 257.2 \ifmmode±\else\textpm\fi 1.9 \ifmmode±\else\textpm\fi 8.9 and 229.3 \ifmmode±\else\textpm\fi 1.9 \ifmmode±\else\textpm\fi 9.0 mb, respectively. Inclusive production cross sections for negatively and positively charged pions are presented as functions of laboratory momentum in ten intervals of the laboratory polar angle covering the range from 0 up to 420 mrad. The spectra are compared with predictions of several hadron production models.