HEPData Search

The asymmetry ratioA = (σ⊥ -σ∥)/(σ⊥ +σ∥) has been measured by means of linearly polarized γ-rays for π0 and π+ photoproduction. For the reaction γ + p → n + π+, measurements were taken for θc.m. = 135° at γ-ray energies ranging from 390 to 909 MeV. For the reaction γ + p → p + π0, measurements were taken for θc.m. = 60° and 90° at γ-ray energies ranging from 426 to 918 Mev.

2 data tables match query

Table 1

No description provided.

Table 3

No description provided.

Asymmetry ratios in the photoproduction of π + by linearly polarized γ-rays in the energy range 200–400 MeV

Gorenstein, P. ; Grilli, M. ; Soso, F. ; et al.

Phys.Lett. 23 (1966) 394-396, 1966.

Inspire Record 1392866 DOI 10.17182/hepdata.30179

The asymmetry ratio for the process γ + p → n + π + by linearly polarized γ rays are reported for E γ = 200 − 400 MeV and for θ (production angle of π in the c.m. system) = 90°. The experimental results are compared with some recent theoretical predictions.

1 data table match query

Table 4

No description provided.

Charged-Pion Photoproduction from Deuterium with Polarized Bremsstrahlung

Liu, F.F. ; Drickey, D.J. ; Mozley, R.F. ;

Phys.Rev. 136 (1964) B1183-B1186, 1964.

Inspire Record 1186786 DOI 10.17182/hepdata.26721

Measurements have been made on the ratio of pion-production cross sections at right angles to and along the photon electric-field vector. The positive and negative pions were first momentum-analyzed and counted by means of a counter telescope. Data have been taken at 45, 90, and 135° in the c.m. system, and at proton energies of 225, 330, and 450 MeV. A comparison of the data is made with the dispersion-relation calculation of McKinley.

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

EXPERIMENTAL STUDIES OF THE SIGMA, T, P POLARIZATION PARAMETERS AND THE GAMMA P ---> P PI0 REACTION MULTIPOLE ANALYSIS IN THE FIRST RESONANCE REGION

Belyaev, A.a. ; Getman, V.a. ; Gorbenko, V.g. ; et al.

Nucl.Phys.B 213 (1983) 201-222, 1983.

Inspire Record 192457 DOI 10.17182/hepdata.34021

A description is given of the experimental techniques and investigation results of the parameters Σ , T , P for the γ p→p π 0 reaction using linear polarized photons and a polarized proton target. The measurements have been made in the photon energy range 280–450 MeV at pion c.m. angles between 60° and 135°. The new experimental data are used in an energy-independent channel multipole analysis without the Watson theorem.

1 data table match query

Table 8

No description provided.

Forward Photoproduction of Neutral Pions on Polarized Protons in the Third Resonance Region

Herr, H. ; Husmann, D. ; Jansen, W. ; et al.

Nucl.Phys.B 125 (1977) 157-161, 1977.

Inspire Record 118996 DOI 10.17182/hepdata.50398

Angular distributions of the target symmetry for the reaction γ + p → π 0 + p have been measured at the Bonn 2.5 GeV Electron Synchrotron at pion c.m. angles between 13° and 63° and photon energies of 1.0 and 1.1 GeV. The π 0 mesons were detected by their two decay photons with total absorption lead-glass Čerenkov counters. Butanol was used as target material in a continuous flow 3 He cryostat operating at 0.5 K and 25 kG. The π 0 counting rate from free protons in the butanol target was derived from the measurements of the differential cross section on hydrogen. The data are compared with data of other laboratories and the results of two recent partial-wave analyses.

1 data table match query

Table 3

No description provided.

Investigation of polarization of the photoprotons from the c-12 nucleus at the gamma-quanta energy of 550-715 mev

Goncharov, N.V. ; Derebchinskii, A.I. ; Zybalov, A.A. ; et al.

Yad.Fiz. 14 (1971) 673-675, 1971.

Inspire Record 69410 DOI 10.17182/hepdata.19273

None

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Date

Collaboration

Subject_areas

Phrases Reset

Reactions

Observables Reset

CM Energies (GeV)

Authors

ASYMMETRY IN SINGLE pi0 PHOTOPRODUCTION BY POLARIZED gamma RAYS ON PROTONS

ASYMMETRY MEASUREMENTS IN PION PHOTOPRODUCTION BY POLARIZED PHOTONS IN THE ENERGY RANGE FROM 250-MeV TO 600-MeV

Angular dependence of the recoil proton polarization from the reaction $\gamma p \to \pi^0 p$ for photon energies between 360-MeV and 1200-MeV

Angular distributions of the asymmetry of the gamma p ---> p pi0 reaction with the gamma-quanta energies of 400, 450, 500, 550, 650 mev

Asymmetry Measurements for $\pi^0$ and $\pi^+$ Photoproduction by Linearly Polarized $\gamma$ Rays in the Energy Range 400-{MeV} - 900-{MeV}

Asymmetry ratios in the photoproduction of π + by linearly polarized γ-rays in the energy range 200–400 MeV

Charged-Pion Photoproduction from Deuterium with Polarized Bremsstrahlung

EXPERIMENTAL STUDIES OF THE SIGMA, T, P POLARIZATION PARAMETERS AND THE GAMMA P ---> P PI0 REACTION MULTIPOLE ANALYSIS IN THE FIRST RESONANCE REGION

Forward Photoproduction of Neutral Pions on Polarized Protons in the Third Resonance Region

Investigation of polarization of the photoprotons from the c-12 nucleus at the gamma-quanta energy of 550-715 mev