Casper, D.
Photoproduction
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Photoproduction of Charged Pi Mesons from Hydrogen and Deuterium

Jenkins, T.L. ; Luckey, D. ; Palfrey, T.R. ; et al.
Phys.Rev. 95 (1954) 179-184, 1954.
Inspire Record 944932 DOI 10.17182/hepdata.26426

Photoproduction cross sections of charged pi mesons from hydrogen and deuterium have been measured as a function of meson angle at gamma-ray energies of 200, 235, and 265 Mev. The angular range extends from 30° to 180° in the laboratory system. Absolute cross sections have been determined. A least-squares fit of the measured cross sections has been made to the expression A+Bcosθ+Csin2θ, which assumes only S and P wave scattering. The coefficients so determined are qualitatively consistent with electric and magnetic dipole absorption together with the assumption of a resonant state of angular momentum 32 and of energy close to 300 Mev. Comparison with neutral meson production indicates some direct charged meson production in the P state.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Photoproduction of $K^+$ mesons in hydrogen

Anderson, R.L. ; Gabathuler, E. ; Jones, D. ; et al.
Phys.Rev.Lett. 9 (1962) 131-133, 1962.
Inspire Record 44754 DOI 10.17182/hepdata.19407

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Polarization of Lambda Hyperons from Photoproduction in Hydrogen

Thom, H. ; Gabathuler, E. ; Jones, D. ; et al.
Phys.Rev.Lett. 11 (1963) 433-435, 1963.
Inspire Record 48006 DOI 10.17182/hepdata.21857

None

1 data table
Table 1

No description provided.


Photoproduction of pi Mesons between 0.9 and 4.0 BeV

Alvarez, R. ; Bar-Yam, Z. ; Kern, W. ; et al.
Phys.Rev.Lett. 12 (1964) 707-710, 1964.
Inspire Record 944926 DOI 10.17182/hepdata.21825

None

1 data table
Table 1

No description provided.


Photoproduction of Charged Mesons from Free Nucleons for Bombarding Gamma-Ray Energies Near 275 MeV

Garelick, D. ; Cooperstein, G. ;
Phys.Rev. 136 (1964) B201-B213, 1964.
Inspire Record 944969 DOI 10.17182/hepdata.26720

The differential cross section for the photoproduction of a π− meson from the neutron bound in the deuteron was measured for pion laboratory angles of 76°, 96°, and 118° at incident gamma-ray energies in the region of 275 MeV. The π− meson and the high-energy proton were detected. The pion momentum and angle were measured by sets of spark chambers situated in front of and behind a magnetic field. The proton angle and range were also measured with spark chambers. To calculate "free" neutron cross sections from our data, we used a modified version of the extrapolation method suggested by Chew and Low. By observing the π+ only, the differential cross section for π+ photoproduction from hydrogen also was measured. As determined by this experiment, the differential cross section for photoproduction of a π− meson from a "free" neutron and the differential cross section for photoproduction of a π+ meson from hydrogen are as follows: Eγlab≃275 MeV These results disagree with the dispersion theory predictions of Chew, Goldberger, Low, and Nambu. They also disagree with McKinley's dispersion theory calculations which include a bipion or ρ-meson term in the production amplitudes.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


PHOTOPRODUCTION OF ETA MESONS FROM 950-MeV TO 1100-MeV

Heusch, C.A. ; Prescott, C.Y. ; Bloom, Elliott D. ; et al.
Phys.Rev.Lett. 17 (1966) 573, 1966.
Inspire Record 50081 DOI 10.17182/hepdata.21826

None

1 data table
Table 1

No description provided.


RECOIL PROTON POLARIZATION IN pi0 PHOTOPRODUCTION

Bloom, Elliott D. ; Heusch, C.A. ; Prescott, C.Y. ; et al.
Phys.Rev.Lett. 19 (1967) 671, 1967.
Inspire Record 51327 DOI 10.17182/hepdata.21757

None

1 data table
Table 1

No description provided.


Eta Photoproduction in the Region from Threshold to 940 MeV

Prepost, R. ; Lundquist, D. ; Quinn, D. ;
Phys.Rev.Lett. 18 (1967) 82-86, 1967.
Inspire Record 52317 DOI 10.17182/hepdata.21768

None

2 data tables
Table 1

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

Table 2

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


5-GeV - 16-GeV SINGLE pi+ PHOTOPRODUCTION FROM HYDROGEN

Boyarski, A. ; Bulos, F. ; Busza, W. ; et al.
Phys.Rev.Lett. 20 (1968) 300-303, 1968.
Inspire Record 51151 DOI 10.17182/hepdata.21730

The differential cross sections for single-π+ photoproduction from hydrogen have been measured over a range of momentum transfers from -2×10−4 to -2 (GeV/c)2, and photon energies from 5 to 16 GeV. The differential cross section increases by roughly a factor of 2 as the magnitude of the square of the momentum transfer decreases from 0.02 (GeV/c)2. The cross section falls approximately as exp(−3|t|) at large momentum transfers, with a similar momentum-transfer dependence of the cross section at all photon energies studied.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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PHOTOPRODUCTION OF eta0 MESONS AT 4-Gev

Bellenger, D. ; Deutsch, S. ; Luckey, David ; et al.
Phys.Rev.Lett. 21 (1968) 1205, 1968.
Inspire Record 53018 DOI 10.17182/hepdata.21703

We have measured η0 photoproduction at 4 GeV. We find our results to be consistent with a theoretical preduction relating this cross section to ω0 production by π mesons using a vector-dominance model; there is no evidence for a dip or change of slope at −t=0.6 as seen in π0 photoproduction.

1 data table
Table 1

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