Total Cross Sections for p, \bar{p}, K + /-, and pi + /- on Hydrogen Between 3 and 10 Gev/c

von Dardel, G. ; Frisch, D.H. ; Mermod, R. ; et al.
Phys.Rev.Lett. 5 (1960) 333-336, 1960.
Inspire Record 944910 DOI 10.17182/hepdata.197

None

2 data tables

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Total Cross Sections for Negative Pions on Protons at 230, 290, 370, 427, and 460 Mev

Caris, John C. ; Goodwin, Lester K. ; Kenney, Robert W. ; et al.
Phys.Rev. 122 (1961) 262-264, 1961.
Inspire Record 944986 DOI 10.17182/hepdata.26810

Total cross sections for negative pions on protons were measured at laboratory energies of 230, 290, 370, 427, and 460 Mev. The measurements were made in the same pion beams as and at energies identical with those of our π−−p differential scattering experiments. Comparisons of the total and differential scattering can be made with the dispersion theory at a given energy without introducing the systematic errors that would normally enter due to uncertainties in the parameters of more than one pion beam. The measured total cross sections are found to agree within statistics with other measured values, and with the sums of elastic, inelastic, and charge-exchange cross sections measured at this laboratory. The results are:

1 data table

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Elastic Scattering of Negative Pions by Protons at 230, 290, 370, and 427 Mev

Goodwin, Lester K. ; Kenney, Robert W. ; Perez-Mendez, Victor ;
Phys.Rev. 122 (1961) 655-664, 1961.
Inspire Record 944985 DOI 10.17182/hepdata.26809

The elastic differential cross section for the scattering of negative pions by hydrogen was measured at laboratory-system pion kinetic energies of 230, 290, 370, and 427 Mev. The elastically scattered pions were detected by a counter telescope which discriminated against recoil protons and inelastic pions on the basis of range. Differential cross sections were obtained at nine angles for each energy and were fitted by a least-squares program to a series of Legendre polynomials. At the three higher energies, D waves are required to give satisfactory fits to the data. The real parts of the forward-scattering amplitudes calculated from this experiment are in agreement with the predictions of dispersion theory. The results of this experiment, in conjunction with data from other pion-nucleon scattering experiments, support the hypothesis of charge independence at these higher energies.

4 data tables

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Neutral Pion Production by 960-Mev Negative Pions

Weinberg, A. ; Brenner, A.E. ; Strauch, K. ;
Phys.Rev.Lett. 8 (1962) 70-72, 1962.
Inspire Record 944905 DOI 10.17182/hepdata.162

None

2 data tables

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n-p Elastic Charge Exchange in the BeV Energy Region

Palevsky, H. ; Moore, J.A. ; Stearns, R.L. ; et al.
Phys.Rev.Lett. 9 (1962) 509-511, 1962.
Inspire Record 46894 DOI 10.17182/hepdata.209

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6 data tables

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Electron-Proton Scattering at High-Momentum Transfer

Berkelman, K. ; Feldman, M. ; Littauer, R.M. ; et al.
Phys.Rev. 130 (1963) 2061-2068, 1963.
Inspire Record 46839 DOI 10.17182/hepdata.26788

The elastic electron-proton scattering cross section has been measured at laboratory angles between 90° and 144° and for values of the four-momentum transfer squared between 25 and 45 F−2 (incident electron laboratory energies from 830 to 1360 MeV). Both the scattered electrons and the recoil protons were momentum analyzed and counted in coincidence, making possible background-free measurements down to cross sections of the order of 10−35 cm2/sr. The data are consistent with the Rosenbluth formula, and the resulting form factors tie on well with previous measurements at lower momentum transfer, continuing the established trend.

6 data tables

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Proton-Proton Elastic Scattering at 90-degrees and Structure Within the Proton

Akerlof, C.W. ; Hieber, R.H. ; Krisch, A.D. ; et al.
Phys.Rev.Lett. 17 (1966) 1105-1109, 1966.
Inspire Record 945161 DOI 10.17182/hepdata.26580

None

1 data table

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Photoproduction of Charged Pions by 2- to 5-GeV Tagged gamma Rays

Dowd, J.P. ; Caldwell, David O. ; Heinloth, K. ; et al.
Phys.Rev.Lett. 18 (1967) 414-417, 1967.
Inspire Record 52488 DOI 10.17182/hepdata.21766

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4 data tables

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Pion-Proton Charge-Exchange Scattering from 500 to 1300 MeV

Chiu, Charles B. ; Eandi, Richard D. ; Helmholz, A.Carl ; et al.
Phys.Rev. 156 (1967) 1415-1426, 1967.
Inspire Record 52278 DOI 10.17182/hepdata.750

Differential cross sections for the reaction π−p→π0n were measured at nine incident-pion kinetic energies in the interval from 500 to 1300 MeV. The negative pion beam from the bevatron was focused on a liquidhydrogen target completely surrounded by a cubic array of six steel-plate spark chambers. The spark chambers were triggered on events with neutral final states. Charge-exchange events were identified from the one-shower and two-shower events in the spark-chamber pictures. By the Monte Carlo technique, the π0 distributions were calculated from the bisector distributions of the two-shower π0 events together with the observed γ-ray distributions of the one-shower π0 events. These π0 distributions were fitted with both Legendre-polynomial expansions and power-series expansions by the method of least squares. The extrapolated forward differential cross sections are in good agreement with the dispersion calculations. The Legendre coefficients for the differential cross sections in isospin state T=12 were obtained by combining our results with available data on π±p elastic scattering. In the light of existing phase-shift solutions, the behavior of these coefficients is discussed. The D5F5 interference term that peaks near 900 MeV is verified to be in isospin state T=12 only. We report here also the total neutral cross sections and the cross sections for the production of neutral multipion final states 2π0n and 3π0n. The 4π solid angle and the calibrated energy response of the spark chambers contribute to the accuracy of the results.

19 data tables

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Elastic Differential Cross Sections for pi + /- + p Scattering from 2.3-6.0 BeVc

Coffin, C.T. ; Dikmen, N. ; Ettlinger, L. ; et al.
Phys.Rev. 159 (1967) 1169-1175, 1967.
Inspire Record 52242 DOI 10.17182/hepdata.26578

Elastic differential cross sections were measured at 6 energies between 2.3 and 6 BeVc for π++p and π−+p. The behavior of the secondary peak as a function of energy and charge is shown. Evidence for considerable resonance structure is seen in the angular distributions.

1 data table

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