Kraybill, H.L.
DSIG/DOMEGA
[2.0, 5.0]
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Elastic differential cross sections for $\pi^+ p$ at 1.76 and 2.08 GeV/c

James, F.E. ; Johnson, J.A. ; Kraybill, H.L. ;
Phys.Lett. 19 (1965) 72-74, 1965.
Inspire Record 1400913 DOI 10.17182/hepdata.30157

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Measurements of the differential cross-section of the reaction p p ---> d pi+ from 3.0 to 5.0 gev/c

Anderson, H.L. ; Larson, D.A. ; Myrianthopoulos, L.C. ; et al.
Phys.Rev.D 9 (1974) 580-596, 1974.
Inspire Record 93111 DOI 10.17182/hepdata.21941

A measurement of the complete differential cross section for the reaction pp→dπ+ at 3.00, 3.20, 3.43, 3.65, 3.83, 4.00, 4.20, and 5.05 GeVc incident proton momentum has been made in an attempt to establish the role of the Δ (1950) in this region. The data show that the previously observed enhancement in the forward cross section between 3 and 4 GeVc due to this isobar is an effect which damps out quickly as the production angle departs from zero degrees, in contrast with the well-known enhancement at 1.35 GeVc, which is evident at all angles. In particular, the one-pion-exchange model is in poor agreement with the extended set of data. A detailed description is given of a novel proportional-wire-chamber system which facilitated the selection of this rather rare reaction from a very high competing background.

3 data tables
Table 1

Axis error includes +- 6/6 contribution.

Table 2

Axis error includes +- 6/6 contribution.

Table 3

No description provided.


Elastic Scattering and Single Meson Production in Proton-Proton Collisions at 2.85 Bev

Smith, G.A. ; Courant, H. ; Fowler, E.C. ; et al.
Phys.Rev. 123 (1961) 2160-2167, 1961.
Inspire Record 47571 DOI 10.17182/hepdata.734

The Brookhaven National Laboratory twenty-inch liquid hydrogen bubble chamber was exposed to a monoenergetic beam of 2.85-Bev protons, elastically scattered from a carbon target in the internal beam of the Cosmotron. All two-prong events, excluding strange particle events, have been studied by the Yale High-Energy Group. The remaining interactions have been studied by the Brookhaven Bubble Chamber Group. Elastic scattering was found to be mostly pure diffraction scattering at center-of-mass angles up to about thirty-five degrees. Some phase shift and/or tapering of the proton edge was required to fit the data at larger angles. No polarization effects in the proton-carbon scattering were observed using hydrogen as an analyzer of polarized protons. Nucleonic isobar formation in the T=32, J=32 state was found to account for a large part of single pion production. High-orbital angular-momentum states were found to be greatly favored in single pion production. The isobar model of Lindenbaum and Sternheimer gave good agreement with the observed nucleon and pion energy spectra. No polarization or alignment effects were observed for the isobar assumed in this model.

3 data tables
Table 1

No description provided.

Table 3

No description provided.