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We report some results on charm photoproduction at γ energies ranging from 20 to 70 GeV. 36 events with pairs of charmed particles have been found in emulsions. The computed total cross section is (230±57)nb/nucleon. Frequencies of different production channels and some distributions are presented and compared with the predictions from a photon-gluon fusion model with string fragmentation.

1 data table

Table 1

No description provided.

Measurement of spallation cross-sections at the synchrocyclotron internal beam

Aleksandrov, A.A. ; Mironov, Yu.T. ;

LENINGRAD-90-1561, 1989.

Inspire Record 289316 DOI 10.17182/hepdata.37960

None

2 data tables

Table 1

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Xi- production by Sigma-, pi- and neutrons in the hyperon beam experiment at CERN.

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Barberis, D. ; et al.

Z.Phys.C 76 (1997) 35-44, 1997.

Inspire Record 448181 DOI 10.17182/hepdata.47352

Inclusive cross sections for Ξ- hyperon production in high-energy Σ-, π- and neutron induced interactions were measured by the experiment WA89 at CERN. Secondary Σ- and π- beams with average momenta of 345 GeV/c and a neutron beam of 260 GeV/c were produced by primary protons of 450 GeV/c from the CERN SPS. The influence of the target mass on the Ξ- cross section is explored by comparing reactions on copper and carbon nuclei. Both single and double differential cross sections are presented as a function of the transverse momentum and the Feynman variable xF. A strong leading effect for Σ- produced by Σ- is observed.

9 data tables

Table 1

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First observation of the Xi- pi+ decay mode of the Xi0(1690) hyperon

The WA89 collaboration Adamovich, M.I. ; Aleksandrov, Yu.A. ; Barberis, D. ; et al.

Eur.Phys.J.C 5 (1998) 621-624, 1998.

Inspire Record 450128 DOI 10.17182/hepdata.47357

We report the first observation of the Xi- pi+ decay mode of the Xi0(1690), confirming the existence of this resonance. The Xi0(1690) were produced by Sigma- of 345 Gev/c mean momentum in copper and carbon targets. The mass and width are close to those observed earlier for the Xi-(1690) in the Lambda K- decay channel. The product of inclusive production cross section and branching ratio is given relative to that of the Xi0(1530).

1 data table

Table 1

The cross setion times branching ratio.

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CM Energies (GeV)

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Photoproduction of positive pions on protons in the region of resonance p-33(1236)

Measurement of Asymmetry of Photoproduction of Positive Pions on Protons by Linearly Polarized Photons in 250-MeV-500-MeV Energy Range

Study of Neutral Pion Photoproduction on Hydrogen in Delta (1232) Vicinity

PHOTOPRODUCTION OF RHO0 MESONS ON HYDROGEN AT GAMMA QUANTA ENERGIES OF 15-GEV - 30-GEV. (IN RUSSIAN)

PHOTOPRODUCTION OF RHO0 MESONS IN H AND BE. (IN RUSSIAN)

Neutron rms radius and electric polarizability from data on the interaction of slow neutrons with bismuth

Cross-sections and Some Features of Charm Photoproduction at $\gamma$ Energies of 20-{GeV} to 70-{GeV}

Measurement of spallation cross-sections at the synchrocyclotron internal beam

Xi- production by Sigma-, pi- and neutrons in the hyperon beam experiment at CERN.

First observation of the Xi- pi+ decay mode of the Xi0(1690) hyperon