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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...

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Detalles Bibliográficos
Autores principales:	Grabmuller, Stefanie, Ryabchikov, Dmitry, Friedrich, Jan M.
Lenguaje:	eng
Publicado:	2011
Materias:	Particle Physics - Experiment
Acceso en línea:	http://cds.cern.ch/record/1378795

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