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Anti-proton He-4 interactions at 200-MeV/c

Balestra, F. ; Batusov, Yu.A. ; Bendiscioli, G. ; et al.

Phys.Lett.B 305 (1993) 18-22, 1993.

Inspire Record 362745 DOI 10.17182/hepdata.28940

The differential cross sections for antiproton elastic scattering on 4 He at 192.8 MeV/ c are measured. The annihilation cross section σ a = (377.6 ± 8.0) mb, the elastic cross section σ el = (206.3 ± 6.6) mb and the total p 4 He interaction cross section σ tot = (583.9 ± 10.4) mb are determined. The ratio of the real to imaginary part of the forward p 4 He amplitude is found: π =−0.17± 0.33 0.24 . Partial wave analysis reveals that the S, P and D waves are essential in this energy region.

7 data tables

Table 1

Charged prong multiplicity distributions in pbar HE annihilation.

Table 2

Mean charged particle multiplicity in pbar HE4 annihilations.

Table 3

No description provided.