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The ration R = σ(e + = p)/σ(e − + p) of the elastic scattering cross section of positrons and electrons on protons was measured at momentum transfers of 11.66 fm −2 and 35.1 fm −2 . The results are consistent with R = 1.

1 data table

Table 1

No description provided.

Single photoproduction of neutral $\pi$-mesons on hydrogen at small angles between 4 and 5.8 GeV

Braunschweig, M. ; Braunschweig, W. ; Husmann, D. ; et al.

Phys.Lett.B 26 (1968) 405-409, 1968.

Inspire Record 1389637 DOI 10.17182/hepdata.29336

The differential cross-section of the reaction γ + p → p + π 0 was measured at the Deutsches Elektronen-Synchrotron, Hamburg, at mean photon energies of 4.0, 5.0 and 5.8 GeV and pion center of mass angles between 0° and 60°. The results are compared wiht theoretical calculations based on Reggeized vector meson exchange.

6 data tables

Table 1

Axis error includes +- 7/7 contribution.

Table 2

Axis error includes +- 7/7 contribution.

Table 3

Axis error includes +- 7/7 contribution.

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The charge exchange $K^- + p \to K^0 + n$ at 9.50 GeV/c

Astbury, P. ; Finocchiaro, G. ; Michelini, A. ; et al.

Phys.Lett. 16 (1965) 328-331, 1965.

Inspire Record 1389639 DOI 10.17182/hepdata.30381

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Elastic scattering and polarisation in 3.0 and 3.6 GeV/c antiproton-proton collisions

Escoubès, B. ; Fedrighini, A. ; Goldschmidt-Clermont, Y. ; et al.

Phys.Lett. 5 (1963) 132-136, 1963.

Inspire Record 1389108 DOI 10.17182/hepdata.751

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

The Charge Form Factor of the Proton at a Momentum Transfer of 75 F$^-^2$

Bartel, W. ; Dudelzak, B. ; Krehbiel, H. ; et al.

Phys.Lett.B 25 (1967) 236-237, 1967.

Inspire Record 1333753 DOI 10.17182/hepdata.29448

The proton form factors GE(q2) and GM(q2) are determined at q2 = 75fm−2.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

$\pi^{-} + p$ elastic scattering in the neighbourhood of $N^{*}_1/2$ (2190)

Busza, W. ; Davis, D.G. ; Duff, B.G. ; et al.

Nuovo Cim.A 52 (1967) 331-341, 1967.

Inspire Record 1185326 DOI 10.17182/hepdata.37568

Elastic π−+p differential cross-section data are presented at the incident-pion momenta 1.72, 1.89, 2.07, 2.27 and 2.46 GeV/c. Resonant behaviour in the coefficients of a Legendre polynomial expansion indicates G- or H-wave resonance. Further analysis using an energy-dependent parametrization of G- and H-waves shows the results to be compatible with the 7−/2 assignment for the , but equally acceptable solutions are obtained with the inclusion of an additional 9+/2 resonance contribution.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Measurement of the invariant mass distributions for the pp -> ppeta' reaction at excess energy of Q = 16.4 MeV

Klaja, P. ; Moskal, P. ; Czerwinski, E. ; et al.

Phys.Lett.B 684 (2010) 11-16, 2010.

Inspire Record 843930 DOI 10.17182/hepdata.55690

The proton-proton and proton-eta' invariant mass distributions have been determined for the pp -> ppeta' reaction at an excess energy of Q = 16.4 MeV. The measurement was carried out using the COSY-11 detector setup and the proton beam of the cooler synchrotron COSY. The shapes of the determined invariant mass distributions are similar to those of the pp -> ppeta reaction and reveal an enhancement for large relative proton-proton momenta. This result, together with the fact that the proton-eta interaction is much stronger that the proton-eta' interaction, excludes the hypothesis that the observed enhancement is caused by the interaction between the proton and the meson.

2 data tables

Table 1

Differential cross section as a function of the squared invariant mass of the proton-proton system.

Table 2

Differential cross section as a function of the squared invariant mass of the proton-etaprime system.

Differential cross section and recoil polarization measurements for the gamma p to K+ Lambda reaction using CLAS at Jefferson Lab

The CLAS collaboration McCracken, M.E. ; Bellis, M. ; Meyer, C.A. ; et al.

Phys.Rev.C 81 (2010) 025201, 2010.

Inspire Record 840934 DOI 10.17182/hepdata.54967

We present measurements of the differential cross section and Lambda recoil polarization for the gamma p to K+ Lambda reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K+ production angles. Independent analyses were performed using the K+ p pi- and K+ p (missing pi -) final-state topologies/ results from these analyses were found to exhibit good agreement. These differential cross section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300 MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500 MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of non-resonant K+ Lambda photoproduction mechanisms at all production angles.

241 data tables

Table 1

Differential cross section as a function of COS(THETA(K)) for the centre-of-mass range 1.62-1.63 GeV.

Table 2

Differential cross section as a function of COS(THETA(K)) for the centre-of-mass range 1.63-1.64 GeV.

Table 3

Differential cross section as a function of COS(THETA(K)) for the centre-of-mass range 1.64-1.65 GeV.

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Invariant mass distributions for the pp to p p eta reaction at Q=10 MeV

Moskal, P. ; Czyżykiewicz, R. ; Czerwiński, E. ; et al.

Eur.Phys.J.A 43 (2010) 131-136, 2010.

Inspire Record 839339 DOI 10.17182/hepdata.54192

Proton-proton and proton-eta invariant mass distributions and the total cross section for the pp to pp eta reaction have been determined near the threshold at an excess energy of Q=10 MeV. The experiment has been conducted using the COSY-11 detector setup and the cooler synchrotron COSY. The determined invariant mass spectra reveal significant enhancements in the region of low proton-proton relative momenta, similarly as observed previously at higher excess energies of Q=15.5 MeV and Q= 40MeV.

3 data tables

Table 1

Total cross section determined from the integral of the invariant mass distribution.

Table 2

Distribution of the square of the invariant mass of the proton-proton system.

Table 3

Distribution of the square of the invariant mass of the proton-eta system.

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Antiproton-proton elastic scattering at 4 GeV/c and derivation of diffraction slope at infinite energy

Scattering of positrons and electrons from protons

Single photoproduction of neutral $\pi$-mesons on hydrogen at small angles between 4 and 5.8 GeV

The charge exchange $K^- + p \to K^0 + n$ at 9.50 GeV/c

Elastic scattering and polarisation in 3.0 and 3.6 GeV/c antiproton-proton collisions

The Charge Form Factor of the Proton at a Momentum Transfer of 75 F$^-^2$

$\pi^{-} + p$ elastic scattering in the neighbourhood of $N^{*}_1/2$ (2190)

Measurement of the invariant mass distributions for the pp -> ppeta' reaction at excess energy of Q = 16.4 MeV

Differential cross section and recoil polarization measurements for the gamma p to K+ Lambda reaction using CLAS at Jefferson Lab

Invariant mass distributions for the pp to p p eta reaction at Q=10 MeV