Search for Narrow Baryons in the $\pi^- p$ Total Cross-section Between 2-{GeV}/$c$ and 14-{GeV}/$c$

The CERN-College de France-Ecole Poly collaboration Barrelet, E. ; Baillon, P. ; Benayoun, Maurice ; et al.
Phys.Lett.B 94 (1980) 541-547, 1980.
Inspire Record 153783 DOI 10.17182/hepdata.27168

A high-statistics search for resonances in the π − p total cross section has been carried out over the incident momentum region from 2 to 14 GeV/ c . The measurements were performed with a transmission technique using multiwire proportional chambers in place of the conventional counter arrays. A microprocessor unit was used for the on-line analysis of the data, allowing a total of ≈ 50 000 events to be examined in a 300 ms burst. The search aimed at detecting the possible formation in π − p collisions of narrow non-strange baryon resonances. The momentum region was uniformly scanned with a total of ≈4500 mmeasurements in fixed fractional momentum steps of d P / P = 5 × 10 −4 . The relative statistical precision of each measurement was d σ / σ = ±0.3%. Within these limits no significant structure was detected.

1 data table

ENERGY SCAN IN MOMENTUM STEPS OF D(PLAB)/PLAB OF 5*10**-4.