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Single-positive-pion photoproduction on hydrogen in the energy range (500÷800) MeV

Beneventano, M. ; Paoluzi, L. ; Sebastiani, F. ; et al.

Nuovo Cim. 54 (1968) 468-474, 1968.

Inspire Record 1185328 DOI 10.17182/hepdata.37565

Cross-sections for the photoproduction of positive pions in hydrogen have been measured at the 1.1 GeV Frascati electron synchrotron for photon energiesE γ between 500 and 800 MeV and for π+ c.m. angles of θ=30o, 90o. The cross-sections exhibit a smooth behavior as a function of energy forE γ=(500÷600) MeV. No immediate evidence is found of a contribution of theP 11 resonance.

1 data table

Table 1

No description provided.

Single-$\pi^{0}$ photoproduction from hydrogen around the «Second resonance»

Bellettini, G. ; Bemporad, C. ; Biggs, P.J. ; et al.

Nuovo Cim. 44 239-252, 1966.

Inspire Record 1185321 DOI 10.17182/hepdata.37693

New results are presented on the differential cross-section for the reaction α+p→π0+p, at energies between 600 and 1000 MeV, and c.m. pion angles Θ*π=40° and Θ*π=60°. The present data, together with that at Θ*π=40° already published (11), show an angle-independent position of the second resonance at about 750 MeV. Rather flat angular distributions in the forward c.m. hemisphere are also favoured by these data. On comparing the cross-sections obtained when detecting both the neutral pion and the recoil proton, and when detecting only the latter, estimates of the background of «ghost protons» are obtained, in agreement with the empirical curve proposed in ref. (11).

1 data table

Table 1

No description provided.

Differential cross-section measurements for pi0 photoproduction in the region of the third nucleon resonance

Booth, P.S.L. ; Butler, M.F. ; Carroll, L.J. ; et al.

Nuovo Cim.A 13 (1973) 235-247, 1973.

Inspire Record 86978 DOI 10.17182/hepdata.37826

Differential cross-sections have been measured for π0 photoproduction over the energy range 0.8 GeV to 1.4 GeV and at angles between 50° and 90° c.m.

1 data table

Table 1

No description provided.

Polarisation of recoil neutrons from single-pion production off protons in the resonance region

Hahn, U. ; Wallraff, W. ; Weingarten, W. ;

521, 1973.

Inspire Record 1501541 DOI 10.17182/hepdata.76249

None

1 data table

Table 1

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

Produzione di mesoni pi nell’urto pi- p at 775 MeV

Bertanza, L. ; Bigi, A. ; Casali, R. ; et al.

Nuovo Cim.Suppl. 2 (1964) 673-674, 1964.

Inspire Record 1498680 DOI 10.17182/hepdata.75451

None

1 data table

Table 1

No description provided.

A resolution study of backward $\pi^- p$ reactions between 0.6 and 1.0 GeV/c

Debenham, Nicholas Charles ;

PhD Thesis, Imperial Coll., London, 1973.

Inspire Record 1499121 DOI 10.17182/hepdata.75616

None

312 data tables

Table 1

No description provided.

Table 2

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Table 3

No description provided.

More…

Real Parts of the Pion-Proton Forward Scattering Amplitude

Engelmann, T.R. ; Hendrick, R.E. ;

Phys.Rev.D 16 (1977) 2891, 1977.

Inspire Record 119142 DOI 10.17182/hepdata.75552

The most recent total-cross-section data are used to calculate real parts of the forward elastic π±p scattering amplitudes from threshold to 240 GeV/c. Using statistical and systematic uncertainties of the total cross sections and their momenta, along with uncertainties of the subtraction and coupling constants, unphysical cuts, and cross-section extrapolations, we calculate the uncertainties of the real amplitudes. Our results are compared to experimental and other theoretical determinations of the π±p forward real amplitudes.

240 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.