HEPData Search

Showing 10 of 138 results

Single photoproduction of neutral π-mesons on hydrogen at small angles between 1.3 and 3 GeV

Braunschweig, M. ; Husmann, D. ; Lübelsmeyer, K. ; et al.

Phys.Lett. 22 (1966) 705-708, 1966.

Inspire Record 1389452 DOI 10.17182/hepdata.753

The differential cross section of the reaction γ + p → p + πo has been measured at the Deutsches Elektronen- Synchrotron, Hamburg, at mean phonon energies of 1.36, 2.0 and 3.0 GeV and pion center of mass angles between 0o and 70o. The results are compared with some theoretical calculations based on elementary and reggeized 1- meson exchange.

4 data tables match query

Table 1

Axis error includes +- 12/12 contribution.

Table 2

Axis error includes +- 12/12 contribution.

Table 3

Axis error includes +- 12/12 contribution.

More…

Photoproduction of Neutral Pions from Hydrogen in the Energy Range 700-1100 Mev

Bingham, H.H. ; Clegg, A.B. ;

Phys.Rev. 112 (1958) 2053-2061, 1958.

Inspire Record 944994 DOI 10.17182/hepdata.735

Gamma-rays from the decay of neutral pions photoproduced from hydrogen by the bremsstrahlung beam of the Caltech synchrotron have been studied with a thallium chloride crystal total absorption spectrometer. The energy spectrum of the decay gamma-rays produced by a range of incident photon energy is obtained by the photon difference method and this spectrum enables a separation of the gamma-rays into two groups: (i) those from the decay of neutral pions produced singly from hydrogen and (ii) those from the decay of neutral pions from multipleproduction reactions. The cross sections for the single-production reaction are in agreement with the recoil proton experiments at Caltech and Cornell. For the multiple-production reactions we measure the cross section for producing neutral pions within a range of kinetic energies: It is shown that all available multiple-production data can be explained in terms of two compound states, one at about 750 Mev and the other at some higher energy. This is in agreement with an analysis of the single-photoproduction data, which is given in an appendix. These two states are, respectively, (T=12, J=12+) and (T=32, J=12+).

4 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Polarized Target Asymmetry in pi0 Photoproduction Between 0.4-GeV and 1.0-GeV Around 100-Degrees

Feller, P. ; Fukushima, M. ; Horikawa, N. ; et al.

Phys.Lett.B 55 (1975) 241-244, 1975.

Inspire Record 90929 DOI 10.17182/hepdata.35716

The polarized target asymmetry in the reaction γp→π°p has been measured at c.m. angles around 100° for photon energies between 0.4 and 1.0 GeV by detecting both the recoil proton and the π°. The result is compared with recent analyses.

1 data table match query

Table 1

No description provided.