Higuchi, M.
GAMMA N --> PI- P
Photoproduction
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Charged-pi photoproduction at 180 degress in the energy range between 300 and 1200 mev

Fujii, T. ; Okuno, H. ; Orito, S. ; et al.
Phys.Rev.Lett. 26 (1971) 1672-1675, 1971.
Inspire Record 68981 DOI 10.17182/hepdata.21616

The differential cross sections at 180° for the reactions γ+p→π++n and γ+n→π−+p were measured using a magnetic spectrometer to detect π± mesons. In order to reduce the spread of energy resolution due to the nucleon motion inside the deuteron, a photon difference method was employed with a 50-MeV step for the reaction γ+n→π−+p. The data show structures at the second- and the third-resonance regions for both reactions. A simple phenomenological analysis was made for fitting the data, and the results are compared with those of previous analyses.

2 data tables match query
Table 1

No description provided.

Table 2

No description provided.


Total cross-section measurement of $\pi^{-}$ photoproduction on deuteron in the first-resonance region.

Chiefari, G. ; Drago, E. ; Napolitano, M. ; et al.
Lett.Nuovo Cim. 13 (1975) 129-133, 1975.
Inspire Record 1393351 DOI 10.17182/hepdata.37447

None

1 data table match query
Table 2

CROSS SECTION ON NEUTRON CALCULATED FROM DEUTERIUM MEASUREMENTS USING THE NUCLEON SPECTATOR MODEL.


Single pi- photoproduction on neutrons in the energy region of the p(11), d(13), s(11) pion-nucleon resonances

Beneventano, M. ; D' Angelo, S. ; De Notaristefani, F. ; et al.
Nuovo Cim.A 19 (1974) 529-547, 1974.
Inspire Record 96708 DOI 10.17182/hepdata.37753

In this note we report the results obtained in a single-photoproduction experiment on neutrons in deuterium, with an experimental apparatus made of scintillation counters, spark chambers and a magnetic spectrometer; the explored energy region is one around the second resonance, that is (500÷900) MeV indicent γ-ray energy. We briefly describe the present situation of the phenomenological analysis of the single photoproduction in the second resonance region and compare the results of an analysis made by us with the results obtained by other authors; in particular the e.m. coupling of theP11 isobaric state found by us is large, in accordance with the results of some other authors.

1 data table match query
Table 1

No description provided.


Analysis of the reaction gamma n ---> p pi- in the first and second resonance regions

Rossi, V. ; Piazza, A. ; Susinno, G. ; et al.
Nuovo Cim.A 13 (1973) 59-89, 1973.
Inspire Record 87242 DOI 10.17182/hepdata.37785

The final results of an experimental investigation of the reaction γ+n→p+π− performed with a deuterium bubble chamber at the 1 GeV Frascati electrosynchrotron are presented. Total and differential cross-sections on neutrons are extracted by means of the spectator model, the reliability of which has been checked by numerous tests and is extensively discussed. The problems of a possible isotensor component in the electromagnetic current, the time-reversal invariance of the electromagnetic interactions and the photoproduction of the Roper resonance are considered in detail.

2 data tables match query
Table 1

No description provided.

Table 13

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Negative Pion Production from Neutrons by Polarized gamma Rays

Nishikawa, T. ; Hiramatsu, S. ; Kimura, Y. ; et al.
Phys.Rev.Lett. 21 (1968) 1288-1291, 1968.
Inspire Record 944914 DOI 10.17182/hepdata.38534

The differential asymmetry ratio for the process γ+n→p+π− was measured at 90° in the center-of-mass system and for incident photon energies from 352 to 550 MeV. The observed asymmetries are larger than the values predicted from the theory by Berends, Donnachie, and Weaver. A smaller M1- amplitude gives better agreement between the experiment and the theory.

2 data tables match query
Table 1

No description provided.

Table 2

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