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Approximately 60 000 events have been collected in a spark chamber experiment at the CERN Proton Synchrotron which studied elastic diffraction scattering of π--p and p-p at incident momenta of 8.5, 12.4 and 18.4 GeV/c and of π+-p at 8.5 and 12.4 GeV/c. Magnetic analysis of the incoming and diffraction scattered particle, together with measurement of all angles, permitted each event to be determined as elastic subject to three constraints, so that the inelastic background was rejected with. high efficiency, even at the larger momentum, transfers. Much of the data have been processed by the CERN Automatic Flying-Spot DigitizerHPD. A detailed description of the experimental technique and of the methods of analysis is given. The results, together with data from lower energies, confirm the remarkable energy-independence of the shape of the pion-proton diffraction scattering peak up to |t| = 1.5 (GeV/c)2, wheret is the square of the four-momentum transfer, over a range of pion energies from 2 to 18 GeV. Proton-proton scattering does however appear to show a shrinking diffraction peak. In general, the data agree with other experiments using both counter and bubble chamber techniques, but some differences do appear. During the experiment, data were taken which set an upper limit of 2·102 μb/(GeV/c)2 on the differential elastic cross-section dσ/dt over a range of |t| from 20.9 to 23.4 (GeV/c)2 at 13.4 GeV/c incident pion momentum.

18 data tables

Table 1

'1'. '2'. '3'. '4'.

Table 2

'1'.

Table 3

'1'.

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The slope parameter of the differential cross-section of elastic p-p scattering in energy range 12-70 gev

Beznogikh, G.G. ; Buyak, A. ; Iovchev, K.I. ; et al.

Phys.Lett.B 30 (1969) 274-275, 1969.

Inspire Record 56659 DOI 10.17182/hepdata.28895

The measurements of the differential cross section of elastic p-p scattering in relative units were performed in the energy range of 12–70 GeV. The values of the slope parameter were obtained from this data. It was shown that the slope parameter of the differential p-p scattering is monotonously increasing when the proton energy rises in the range 12–70 GeV. We have obtained the slope Pomeranchuk's pole trajectory from this data: α′ p = 0.40 ± 0.09.

1 data table

Table 1

No description provided.

High-Energy Inelastic e p Scattering at 6-Degrees and 10-Degrees

Bloom, Elliott D. ; Coward, D.H. ; DeStaebler, H.C. ; et al.

Phys.Rev.Lett. 23 (1969) 930-934, 1969.

Inspire Record 54874 DOI 10.17182/hepdata.21635

Cross sections for inelastic scattering of electrons from hydrogen were measured for incident energies from 7 to 17 GeV at scattering angles of 6° to 10° covering a range of squared four-momentum transfers up to 7.4 (GeV/c)2. For low center-of-mass energies of the final hadronic system the cross section shows prominent resonances at low momentum transfer and diminishes markedly at higher momentum transfer. For high excitations the cross section shows only a weak momentum-transfer dependence.

9 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////FROM UNCERTAINTY IN ELECTRON-DETECTION EFFICIENCY).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////FROM UNCERTAINTY IN ELECTRON-DETECTION EFFICIENCY).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////FROM UNCERTAINTY IN ELECTRON-DETECTION EFFICIENCY).

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Upper limits on rare two-body processes in k- p and anti-p p scattering at high energies

Birnbaum, D. ; Edelstein, R.M. ; Hien, N.C. ; et al.

Phys.Lett.B 31 (1970) 36-39, 1970.

Inspire Record 63230 DOI 10.17182/hepdata.6079

A missing mass spectrometer search was made for several two-body, double charge exchange reactions, including backward K −p and p̄p elastic scattering at 8 and 16 GeV/ c and small momentum transfer. No examples of any of these processes were observed.

2 data tables

Table 1

'1'. '2'. '3'.

Table 2

No description provided.

Neutron-proton total cross-sections between 8 gev/c and 21 gev/c

Engler, J. ; Horn, K. ; Moennig, F. ; et al.

Phys.Lett.B 31 (1970) 669-672, 1970.

Inspire Record 63153 DOI 10.17182/hepdata.27111

Neutron-proton total cross-sections were measured in the momentum range from 8 GeV/ c to 21 GeV/ c with an accuracy of better than 2% using a 0 o neutron beam at the CERN Proton Synchrotron. The np total cross-section drops from 39.7 mb at 8 GeV/ c at 21 GeV/ c , and thus follows closely the pp total cross-sections in this momentum interval.

1 data table

Table 1

No description provided.

Observation of small angle proton proton elastic scattering at 30 gev and 45 gev center-of-mass energies

Holder, M. ; Radermacher, E. ; Staude, A. ; et al.

Phys.Lett.B 35 (1971) 355-360, 1971.

Inspire Record 69228 DOI 10.17182/hepdata.5781

Small angle elastic scattering events have been observed at the CERN Intersecting Storage Rings. Directions of both particles as well as the collision vertex are reconstructed with the help of four sets of spark chambers, two for each of the two arms. The elastic nature of the events is demonstrated by a collinearity requirement. We find values for the (diffraction) slope parameter in disagreement with the simple linear extrapolation of lower energy (Surpukov) data.

4 data tables

Table 1

NUMBER OF EVENTS 87364.

Table 2

NUMBER OF EVENTS 8305.

Table 3

No description provided.

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THE REACTION pi+ p ---> f0 DELTA++ AT 13.1-GeV/c

Gaidos, J.A. ; Ezell, C.R. ; Lamsa, J.W. ; et al.

Nucl.Phys.B 26 (1971) 225-230, 1971.

Inspire Record 67679 DOI 10.17182/hepdata.33719

Data for the reactionπ + p→f o Δ ++ at 13.1 GeV/ c is presented and discussed within a Reggeized pion exchange model with absorption.

3 data tables

Table 1

No description provided.

Table 2

NUMERICAL VALUES TAKEN FROM THE COMPILATION PDG2 (CHEW 73B). READ FROM GRAPH.

Table 3

No description provided.

Neutron-proton elastic scattering from 5 to 30 gev/c

Gibbard, B.G. ; Longo, M.J. ; Jones, Lawrence W. ; et al.

Nucl.Phys.B 30 (1971) 77-115, 1971.

Inspire Record 68614 DOI 10.17182/hepdata.33298

The differential cross section for neutron-proton elastic scattering was measured in the diffraction region with incident neutron momenta between 5 and 30 GeV/ c . The experiment was an optical-spark-chamber-counter experiment conducted at the Brookhaven National Laboratory alternating gradient synchrotron. A well collimated neutron beam with a broad energy spectrum was incident on a liquid hydrogen target. The scattered neutrons were detected in a thick-plate spark-chamber array while the recoil protons were detected and momentum analyzed in a magnetic spectrometer with thin-foil spark chambers.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.