HEPData Search

Invariant cross sections for hadron production (π±,K±,p and$\bar p$) by protons off C, Al, Cu, Sn and Pb nuclei have been measured at 70 GeV for theP∧ range from 1 up to 4.65 GeV/c. TheA-dependence of the invariant cross section is not described by the exponentialAα(P∧), which points to the presence of secondary hadron absorption in nuclei.

30 data tables

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MEASUREMENT OF INCLUSIVE CROSS-SECTIONS pi-, pi+, p, H-2, H-3, He-3 AT ANGLE of 3.5-degrees IN THE INTERACTION OF 10.1-GeV/c PROTONS WITH Be, Al, Cu, Ta AND COMPARISON WITH THE FUSION MODELS

Vorontsov, I.A. ; Ergakov, V.A. ; Safronov, G.A. ; et al.

ITEP-83-085, 1983.

Inspire Record 192084 DOI 10.17182/hepdata.40192

None

6 data tables

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No description provided.

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PARTICLE PRODUCTION IN THE TARGET RAPIDITY REGION FROM HADRON NUCLEUS REACTIONS AT SEVERAL GEV

Shibata, T.A. ; Nakai, K. ; Enyo, H. ; et al.

Nucl.Phys.A 408 (1983) 525-558, 1983.

Inspire Record 197272 DOI 10.17182/hepdata.8739

Highly inelastic processes in hadron-nucleus reactions at several GeV have been studied by measuring multi-particle emission in the target-rapidity region. Events with no leading particle(s) but with high multiplicities were observed up to 4 GeV. Proton spectra from such events were well reproduced with a single-moving-source model, which implied possible formation of a local source. The number of nucleons involved in the source was estimated to be (3–5)A 1 3 from the source velocity and the multiplicity of emitted protons. In those processes the incident energy flux seemed to be deposited totally or mostly (>62;75%) in the target nucleus to form the local source. The cross sections for the process were about 30% of the geometrical cross sections, with little dependence on incident energies up to 4 GeV and no dependence on projectiles (pions or protons). The E 0 parameter in the invariant-cross-section formula E d 3 σ /d p 3 = A exp (− E / E 0 ) for protons from the source increases with incident energy from 1 to 4 GeV/ c , but seems to saturate above 10 GeV at a value E 0 = 60–70 MeV. Three components in the emitted nucleon spectra were observed which would correspond to three stages of the reaction process: primary, pre-equilibrium and equilibrium.

72 data tables

Table 1

BEAM ERROR D(P)/P = 0.300 PCT. X ERROR D(EKIN)/EKIN = 8.00 PCT.

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BEAM ERROR D(P)/P = 0.300 PCT. X ERROR D(EKIN)/EKIN = 8.00 PCT.

Table 3

BEAM ERROR D(P)/P = 0.300 PCT. X ERROR D(EKIN)/EKIN = 8.00 PCT.