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The annihilation process p anti-p ---> 2pi+ 2pi- pi0 at 2.5 gev/c

Clayton, J. ; Mason, P. ; Muirhead, H. ; et al.

Nucl.Phys.B 30 (1971) 605-616, 1971.

Inspire Record 68592 DOI 10.17182/hepdata.33476

Substantial production of the resonances ϱ, f and ω has been observed in this reaction. In contrast with the channel p p → 2π + 2π − , associated production of resonances was found to occur. The behaviour of the associated production of ω-mesons with other resonances is shown to be consistent with some very simple assumptions. Alternative methods of displaying data for p p → ππω are discussed; it is shown that the longitudinal phase plot for this reaction is unlike that obtained for any previously reported reaction. Reasonable agreement for the behaviour of this channel is found with the multiperipheral model of Chan, Łoskiewicz and Allison.

2 data tables

Table 1

STATISTICAL ERRORS ONLY. FOR MULTIPLE PI0 PRODUCTION, RESULTS ARE MODEL DEPENDENT.

Table 2

ANALYSIS OF 5PION FINAL STATE. DISTRIBUTION FITTED WITH FIXED MASS AND WIDTH RESONANCES, THEN ONLY EVENTS ABOVE (FITTED) BACKGROUND TAKEN. CROSS SECTIONS CALCULATED BY PDG (COMPILATION PDG3).

Anti-proton-proton elastic scattering at 3.55 gev/c

Baker, W.F. ; Carlson, P.J. ; Chabaud, V. ; et al.

Nucl.Phys.B 12 (1969) 5-8, 1969.

Inspire Record 56106 DOI 10.17182/hepdata.35577

Antiproton-proton elastic scattering has been measured at 3.55 GeV/ c in the c.m. angular range from 20° to 77° and from 109° to 160°. Forward elastic scattering shows a structure near t = −0.5 (GeV/ c ) 2 . In the backward region two events are observed.

1 data table

Table 1

'1'.