Til, E.A.
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POLARIZATION OF RECOIL PROTONS FROM THE REACTION GAMMA P ---> PI0 P IN THE PHOTON ENERGY RANGE 450-MEV - 800-MEV

Bratashevsky, A.S. ; Gorbenko, V.G. ; Derebchinsky, A.I. ; et al.
Nucl.Phys.B 166 (1980) 525-533, 1980.
Inspire Record 157933 DOI 10.17182/hepdata.34552

Measurement of secondary-proton polarization from the reaction γ p → π 0 p have been performed in the proton energy range 500–800 MeV at c.m. pion emission angles 100°, 120°, 140°. The experiment was carried out using an optical spark chamber telescope at the output of the magnetic spectrometer. The obtained experimental data are included in a Walker-type analysis in order to verify the parameters of the resonances P 11 (1470), D 13 (1570) and S 11 (1535). Proton polarization in the reaction γ p → π 0 p was measured for a photon energy of 450 MeV at a c.m. pion emission angle of 105° using photons linearly polarized at 45° to the reaction plane. A liquid hydrogen target in the field of a superconducting magnet was used for the separation of the P x ′ and P z ′ components of the secondary-proton polarization vector.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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PRODUCTION OF POSITIVE PIONS ON POLARIZED PROTONS BY LINEARLY POLARIZED PHOTONS IN THE ENERGY REGION 300-MEV - 420-MEV. (IN RUSSIAN)

Getman, V.A. ; Gorbenko, V.G. ; Grushin, V.F. ; et al.
Yad.Fiz. 32 (1980) 1008-1019, 1980.
Inspire Record 159789 DOI 10.17182/hepdata.18891

None

6 data tables
Table 1

SEE ABBREVIATIONS IN CR.

Table 2

SEE ABBREVIATIONS IN CR.

Table 3

SEE ABBREVIATIONS IN CR.

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STUDY OF PHOTOPRODUCTION OF POSITIVE PIONS ON POLARIZED PROTONS IN THE REGION OF THE FIRST RESONANCE. (IN RUSSIAN)

Getman, V.A. ; Gorbenko, V.G. ; Derkach, A.Ya. ; et al.
Yad.Fiz. 31 (1980) 930-936, 1980.
Inspire Record 157617 DOI 10.17182/hepdata.18976

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


MEASUREMENT OF POLARIZATION PARAMETER P IN ELASTIC PI- P SCATTERING FOR ENERGIES OF 490-MeV AND 600-MeV. (IN RUSSIAN)

Bekrenev, V.S. ; Gaditsky, V.G. ; Kovalev, A.I. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 31 (1980) 197-201, 1980.
Inspire Record 157168 DOI 10.17182/hepdata.16995

None

1 data table
Table 1

No description provided.


Phi Production in pi- p Collisions Near Threshold

Courant, H. ; Makdisi, Y.I. ; Marshak, M.L. ; et al.
Phys.Rev.D 16 (1977) 1-6, 1977.
Inspire Record 125080 DOI 10.17182/hepdata.24607

Using a secondary pion beam from the Argonne Zero Gradient Synchrotron we have studied the process π−p→φn in the region of the cross-section enhancement near kinematic threshold. For incident momenta between 1.6 and 2 GeV/c, we have determined production and decay angular distributions and extrapolated total cross sections from a sample of about 160 φ's above background. The production and decay distributions are consistent with isotropy over this entire incident-momentum range. The extrapolated total cross section varies between 19 and 25 μb.

2 data tables
Table 1

Axis error includes +- 16/16 contribution (RES-DEF(RES=PHI,BACK=CORRECTED)).

Table 2

Axis error includes +- 16/16 contribution (RES-DEF(RES=PHI,BACK=CORRECTED)).