Fisk, H.E.
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Measurement of sigma(tot) in proton proton scattering in pure spin states

Parker, E.F. ; Ratner, L.G. ; Brown, B.C. ; et al.
Phys.Rev.Lett. 31 (1973) 783-786, 1973.
Inspire Record 83779 DOI 10.17182/hepdata.21350

An experiment was done using the new accelerated polarized proton beam at the Argonne National Laboratory zero-gradient synchrotron and a polarized proton target. The total cross section for proton-proton scattering at 3.5 GeV/c was measured in the spin states ↑↑ and ↑↓ perpendicular to the beam direction. The two cross sections were found to be equal within the experimental error of ±5%.

1 data table
Table 1

TOTAL CROSS SECTION DIFFERENCE FOR PURE TRANSVERSE SPIN STATES.


Photoproduction of pi0 Mesons from Hydrogen in the Region 900 to 1200 Mev

Jackson, H.E. ; DeWire, J.W. ; Littauer, R.M. ;
Phys.Rev. 119 (1960) 1381-1384, 1960.
Inspire Record 944989 DOI 10.17182/hepdata.26849

The reaction γ+p→π0+p has been studied in three adjacent 100-Mev energy intervals between 900 and 1200 Mev and at pion center-of-mass angles of 47°, 90°, and 125°. The reaction was observed as a coincidence between the recoil proton and one of the photons from the meson's decay. The kinematics were determined by the energy of the incident photon and the angle of the recoil proton. The differential cross sections at the forward and backward angles show pronounced maxima near 1050 Mev, while the 90° cross sections decrease slowly with energy. The estimated total cross sections suggest a narrow maximum near 1050 Mev. These features are consistent with the previously proposed existence of a resonant state in the pion-nucleon system of total angular momentum 52.

1 data table
Table 1

No description provided.


High-Energy Photoproduction of pi0 Mesons from Hydrogen

DeWire, J.W. ; Jackson, H.E. ; Littauer, Raphael ;
Phys.Rev. 110 (1958) 1208-1209, 1958.
Inspire Record 944997 DOI 10.17182/hepdata.26907

None

1 data table
Table 1

No description provided.