Elings, V.B.
hep-ex
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Photoproduction cross sections for $\pi^+$ and $K^+$ mesons at 3.4 to 4.0 {GeV} and their comparison with {SU(3)}

Elings, V.B. ; Cohen, K.J. ; Garelick, D.A. ; et al.
Phys.Rev. 156 (1967) 1433-1443, 1967.
Inspire Record 51624 DOI 10.17182/hepdata.406

The differential cross sections for the photoproduction reactions γ+p→π++n, γ+p→K++Λ0, and γ+p→K++Σ0 have ben measured for incident laboratory photon energies between 3.4 and 4.0 GeV and for meson center-of-mass angles from about 25° to 45°. The reactions were studied by observing only the charged mesons. The momenta, velocities, and angles of the mesons were measured with a magnetic spectrometer, and the equivalent of nearly monochromatic gamma rays was obtained by performing bremsstrahlung subtractions. The cross sections agree with the inequality predicted from unbroken SU(3). The measured behavior of dσdt as a function of t shows similarities to that observed in studies of mesonnucleon scattering.

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurements of small angle proton proton elastic scattering at the cern intersecting storage rings

Amaldi, U. ; Biancastelli, R. ; Bosio, C. ; et al.
Phys.Lett.B 36 (1971) 504-508, 1971.
Inspire Record 69145 DOI 10.17182/hepdata.28393

Proton-proton elastic scattering has been measured over the angular range 7 to 16 mrad at centre-of-mass energies of 31, 45 and 53 GeV using the CERN Intersecting Storage Rings. The results indicate that the diffraction peak has continued to shrink with increasing energy, but not as fast as suggested by the results at lower energies.

1 data table
Table 1

No description provided.


Total Hadronic Photoabsorption Cross-Sections on Hydrogen and Complex Nuclei from 4-GeV to 18-GeV

Caldwell, David O. ; Elings, V.B. ; Hesse, W.P. ; et al.
Phys.Rev.D 7 (1973) 1362, 1973.
Inspire Record 83727 DOI 10.17182/hepdata.22181

Final total cross sections are given for a counter experiment at SLAC on hadronic photon absorption in hydrogen, deuterium, carbon, copper, and lead at incident energies from 3.7 to 18.3 GeV. Some of the nucleon cross sections have been revised and the C, Cu, and Pb data from 3.7 to 7.4 GeV have not been reported previously. The cross sections for complex nuclei vary approximately as A0.9 in our energy range, indicating that the photon interacts, at least partially, as a strongly interacting particle. The energy dependences of the proton and neutron cross sections are also similar to those of hadron-nucleon cross sections and hence may be fitted by a typical Regge parametrization, yielding σT(γp)=(98.7±3.6)+(65.0±10.1)ν−12 μb and σT(γn)=(103.4±6.7)+(33.1±19.4)ν−12 μb, where ν is the photon energy in GeV. These extrapolate to the same value at infinite energy, consistent with Pomeranchukon exchange, and the energy-dependent part yields an isovector-to-isoscalar-exchange ratio of 0.18 ± 0.06. While these observations are qualitatively consistent with vector meson dominance, quantitatively vector dominance fails in relating our results to ρ photo-production on hydrogen or to experiments determining the ρ-nucleon cross section. Vector dominance cannot be rescued by assuming that the ρ-photon coupling constant depends on the photon mass. Instead, an additional short-range interaction is apparently required, possibly due to a heavy (≳ 2 GeV / c2) vector meson or to a bare-photon interaction. The additional interaction accounts for approximately 20% of the total photoabsorption cross section.

3 data tables
Table 1

DATA ARE GROUPED IN SETS OF FOUR TAGGING ENERGIES FOR EACH INCIDENT POSITRON ENERGY.

Table 2

CROSS SECTIONS FOR EACH INCIDENT POSITRON ENERGY AVERAGED OVER THE FOUR TAGGING ENERGIES.

Table 3

TOTAL CROSS SECTION, EFFECTIVE NUCLEON NUMBER (A-EFF) AND EFFECTIVE ATTENUATION (A-EFF/A) FOR CARBON, COPPER AND LEAD TARGETS. 'SIG(NUCLEON)' IS THE AVERAGE NUCLEON CROSS SECTION.


pi- C-12 Interactions at E(pi) = 40-GeV and the Hypothesis About Hadron Clusters

Inogamova, T.Ya. ; Kalinkin, B.N. ; Lyubimov, V.B. ; et al.
Sov.J.Nucl.Phys. 22 (1975) 291, 1975.
Inspire Record 91364 DOI 10.17182/hepdata.19081

None

1 data table
Table 1

No description provided.


Study of pi- n and pi- C-12 Interactions Involving Strange Particles at the Momentum of 40-GeV/c

Angelov, N. ; Vishnevskaya, K.P. ; Grishin, V.G. ; et al.
Yad.Fiz. 24 (1976) 732-741, 1976.
Inspire Record 100544 DOI 10.17182/hepdata.18228

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Single Photoproduction of Negative Pions from Neutrons by Linearly Polarized Photons in the Region of the First Pion-Nucleon Resonance

Ganenko, V.B. ; Gorbenko, V.G. ; Zhebrovsky, Yu.V. ; et al.
Sov.J.Nucl.Phys. 23 (1976) 511-515, 1976.
Inspire Record 116406 DOI 10.17182/hepdata.39784

None

6 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////).

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Resonance Production in pi- n Interactions at 5-GeV (Four Particle Final States)

Amaglobeli, N.S. ; Budagov, Yu.A. ; Vinogradov, V.B. ; et al.
Yad.Fiz. 23 (1976) 378-382, 1976.
Inspire Record 112763 DOI 10.17182/hepdata.19076

None

1 data table
Table 1

CORRESPONDING PI+ P CROSS SECTIONS QUOTED. SECONDARY INTERACTIONS OF RHO0 AND DEL- WITH INTRANUCLEAR NUCLEONS SUPPRESSES SIG COMPARED WITH PI+ P DATA.


Determination of the Cross-Sections for Multiple Production of pi0 Mesons in Four Prong pi- p Interactions at 5-GeV/c

Amaglobeli, N.S. ; Budagov, Yu.A. ; Vinogradov, V.B. ; et al.
Sov.J.Nucl.Phys. 23 (1976) 515-517, 1976.
Inspire Record 116407 DOI 10.17182/hepdata.47201

None

2 data tables
Table 1

USING METHOD (A), SEE THE ARTICLE.

Table 2

USING METHOD (B), SEE THE ARTICLE.


Yield of Secondary Particles at an Angle of 188-Mrad at the ITEP Synchrotron

Belikov, Yu.E. ; Buklei, A.E. ; Gavrilov, V.B. ; et al.
ITEP-31-1977, 1977.
Inspire Record 121163 DOI 10.17182/hepdata.40348

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Protons and pi- Generation at 188-Mrad in Proton-Nucleus Interaction for 9-GeV/c

Belikov, Yu.E. ; Buklei, A.E. ; Gavrilov, V.B. ; et al.
ITEP-50-1977, 1977.
Inspire Record 121158 DOI 10.17182/hepdata.40275

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.