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We report differential cross sections for π − p → n π 0 in the backward hemisphere at incident momenta of 2.6, 3.5, 4.3, 6.0, and 8.0 GeV/c. We observe less pronounced structure than some previous measurements with a shallow dip displaced from that seen in π + p elastic scattering.

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Measurement of polarization pn pi- p ---> pi0 n at 3.5 and 5.0 gev/c

Hill, D. ; Koehler, P. ; Novey, T. ; et al.

Phys.Rev.Lett. 30 (1973) 239-242, 1973.

Inspire Record 84552 DOI 10.17182/hepdata.21395

The polarization parameter P(t) for the reaction π−p→π0n has been measured at 3.5 and 5.0 GeV/c over the range 0.2<~−t<~1.8 (GeV/c)2. The two γ rays from the π0 decay were detected in a large lead-glass hodoscope. The results agree with the positive polarization values found in earlier Argonne National Laboratory data at −t<0.35 (GeV/c)2. P(t) drops to a small value near t=−0.6 (GeV/c)2 and remains the same out to t=−1.8 (GeV/c)2.

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A secondary peak at t = −1 (GeV/c)2 in high energy π-p charge exchange scattering

Differential cross sections for backward π− p → nπ0 from 2.6 to 8 GeV/c

Measurement of polarization pn pi- p ---> pi0 n at 3.5 and 5.0 gev/c