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Measurement of $\pi^{-}\gamma \to \pi^{-}\pi^{-}\pi^{+}$ at Low Masses, and Comparison to ChPT Prediction, at COMPASS
This paper presents an analysis of pi- Pb -> X- Pb -> pi-pi-pi+ Pb events at 190 GeV/c beam momentum and very low four-momentum transfer t'<0.001 GeV^2/c^2. Coherent scattering off the nucleus as a whole dominates with contributions from Reggeon, Pomeron and photon exchange. The latter...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2011
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/1378795 |