COMPILATION OF pi- p DATA AT 4-GeV/c: BACKWARD RESONANCE PRODUCTION AND pi pi SCATTERING
Jul, 1968Citations per year
Abstract: (APS)
In π−p single-pion-production reactions near 4 GeV/c, we observe several interesting features. Backward ρ0 production is seen to occur with dσdu=63±21 μb/(GeV/c)2 at 180°. Backward ρ− production is less prominent. We see evidence for production at small u of N*0 (pπ− near 1700 MeV) and Δ− (nπ− at 1236 MeV), and possible evidence for other nπ− structure at about 1800 MeV. The density-matrix elements for peripheral ρ0 production are presented in the Jackson and in the helicity frame. The π+π− elastic cross section is obtained by extrapolation of the data to the mass shell. The S-wave ππ phase shifts are calculated by two methods and compared with previous results. We find evidence in the dipion decay angular distribution for the π+π− decay mode of the S*(1070).References(22)
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