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The differential cross section for the reactions γd→pn, γd→π0d, and γd→pX has been measured by using a tagged photon beam in the energy range of dibaryon resonances. The most characteristic feature of the data for γd→pn is a forward nonpeaking angular distribution. This behavior is in complete disagreement with the existing predictions which take into account the dibaryon resonances. A phenomenological analysis is made by slightly modifying the model of the Tokyo group, but no satisfactory result is obtained. The data for γd→π0d at large angles show that the differential cross section decreases exponentially as a function of pion angle. A comparison is made with a Glauber model calculation. The result seems to be rather in favor of the existence of dibaryon resonances, but a clear conclusion is not possible because of a lack of more accurate data. In the process γd→pX, a broad peak due to quasifree pion production is observed, but the limitation of experimental sensitivity does not allow us to have a definite conclusion for the dibaryon resonance of mass 2.23 GeV conjectured by the Saclay group.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

FOR ANGLES >16 DEG THE OVERALL UNCERTAINTY IN ABSOLUTE NORMALIZATION IS ABOUT 10%.

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Differential Cross-sections for $\pi^\pm$ Production at 0-degrees From Proton Proton and Proton - Deuteron Collisions at 1-{GeV}

Abaev, V.V. ; Gridnev, A.B. ; Koptev, V.P. ; et al.

LENINGRAD-80-569, 1980.

Inspire Record 154994 DOI 10.17182/hepdata.37950

None

3 data tables

Table 1

Axis error includes +- 15/15 contribution (DUE TO DATA NORMALISATION ON CROSS SECTION,WHICH IS DEFINED WITH 15% ACCURACY).

Table 2

Axis error includes +- 15/15 contribution (DUE TO DATA NORMALISATION ON CROSS SECTION,WHICH IS DEFINED WITH 15% ACCURACY).

Table 3

Axis error includes +- 15/15 contribution (DUE TO DATA NORMALISATION ON CROSS SECTION,WHICH IS DEFINED WITH 15% ACCURACY).

STUDY OF THE LEADING PROTON SPECTRA IN EXPERIMENTS ON 6.8-GEV/C PROTON SCATTERING ON PROTONS AND C, AL, CU, SN, PB NUCLEI. (IN RUSSIAN)

Ableev, V.G. ; Bodyagin, V.A. ; Vorobev, G.G. ; et al.

Yad.Fiz. 32 (1980) 1351-1356, 1980.

Inspire Record 159804 DOI 10.17182/hepdata.18015

None

2 data tables

Table 1

No description provided.

Table 2

DATA ON THE SUM OF ELASTIC AND QUASIELASTIC CROSS SECTIONS.

Date

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CM Energies (GeV)

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DIFFERENTIAL CROSS-SECTIONS FOR pi PRODUCTION AT THETA (pi) = 60-degrees in 1-GeV PROTON INTERACTION WITH NUCLEI

MEASUREMENTS OF PROTON INCLUSIVE SPECTRA INDUCED BY COLLISIONS OF C-12 NUCLEI WITH C, CU, SN AND PB NUCLEI AT 3.6-GEV/NUCLEON. (IN RUSSIAN)

Measurement of differential cross sections for processes $\gamma d\to p n$, $\pi^0 d$, and $p X$ in the energy range of dibaryon resonances

Differential Cross-sections for $\pi^\pm$ Production at 0-degrees From Proton Proton and Proton - Deuteron Collisions at 1-{GeV}

STUDY OF THE LEADING PROTON SPECTRA IN EXPERIMENTS ON 6.8-GEV/C PROTON SCATTERING ON PROTONS AND C, AL, CU, SN, PB NUCLEI. (IN RUSSIAN)