Coherent Production ofπ+π+πin Deuterium by 8-GeV/cπ+

Abstract
A diffractively produced 3π enhancement is observed with mass ∼1.1 GeV and width ∼0.35 GeV. There is no structure observed in the peak in either the mass or angular distributions. The system is predominantly s-wave πρ with a 3π 0 admixture which is essentially constant in percentage and relative phase across the peak.