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Experimental study of four-prong events in proton proton interactions at 13.1 gev/c

Le Guyader, J. ; Sene, M. ; Ginestet, J. ; et al.
Nucl.Phys.B 35 (1971) 573-591, 1971.
Inspire Record 75410 DOI 10.17182/hepdata.33033

Approximately 21 000 four-prong pp interactions at 13.1 GeV/ c have been studied using the CERN 2m hydrogen bubble chamber. The following reactions have been analyzed pp→ppπ + π − (1) pp→ppπ + π − π 0 (2) pp→ppπ + π + π − (3) The Δ-production is the dominant feature. We also observed the pππ decay of the N ∗ (1470) and N ∗ (1690). The ϱis weakly produced in the three reactions. The η and the α are observed in the reaction (2) and the presence of a ω isobar is discussed. Then the kinematical characteristics of the final particles are described.

2 data tables
Table 1

NORMALIZED TO A TOTAL CROSS SECTION OF 39.6 +- 0.2 MB.

Table 2

RESONANCE PRODUCTION ESTIMATED BY CUTS WITH MONTE-CARLO AND HAND-DRAWN PHASE SPACE DISTRIBUTIONS.


EXCLUSIVE ANNIHILATION PROCESSES IN 8.8-GEV ANTI-P P INTERACTIONS AND COMPARISONS BETWEEN ANTI-P P NONANNIHILATIONS AND P P INTERACTIONS

Ward, D.R. ; Simmons, A.J. ; Ansorge, R.E. ; et al.
Nucl.Phys.B 172 (1980) 302, 1980.
Inspire Record 158992 DOI 10.17182/hepdata.34487

We give cross sections for annihilation and non-annihilation reactions in p p interactions at 8.8 GeV. The non-annihilation data are compared with pp data from the same experiment. We compare data on resonance production and on the impact parameter structure of the final states in p p annihilation and non-annihilation and pp interactions. We investigate the charge structure of the 2 π + 2 π − π 0 final state, and find it consistent with a simple quark model.

4 data tables
Table 1

NORMALIZED TO A TOTAL AP P CROSS SECTION OF 55.9 MB. ANNIHILATION CROSS SECTIONS.

Table 2

NORMALIZED TO A TOTAL AP P CROSS SECTION OF 55.9 MB. NON-ANNIHILATION CROSS SECTIONS.

Table 3

NORMALIZED TO A TOTAL P P CROSS SECTION OF 40.0 MB.

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Quasi Two Particle Reactions in Proton Proton Interactions at 19.1-GeV/c Momentum

Takibaev, Zh.S. ; Boos, E.G. ; Sanko, L.A. ; et al.
Yad.Fiz. 21 (1975) 1015-1021, 1975.
Inspire Record 103077 DOI 10.17182/hepdata.19095

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.