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Polarization measurement of antiproton scattered elastically from proton at 220 mev

Ohsugi, T. ; Fujisaki, M. ; Kaneko, S. ; et al.

Nuovo Cim.A 17 (1973) 456-463, 1973.

Inspire Record 87646 DOI 10.17182/hepdata.37771

The polarization of scattered antiproton in$\bar pp$ elastic scattering has been measured at the kinetic energy of 220MeV by means of double scattering in a bubble chamber. The polarizations obtained are 0.28±0.11, 0.46±0.12, 0.51±0.19 and 0.38±0.31 at the scattering angles 28°, 42°, 56° and 73° in the c.m. system, respectively. These results do not seem to be in good agreement with a prediction given by Bryan and Phillips. We have also compared these data with a modified diffraction model.

1 data table

Table 1

POLARIZATION ASSUMED POSITIVE.

Polarization in elastic anti-proton-proton scattering between 0.9 and 2.5 gev/c

Albrow, M.G. ; Andersson-Almehed, S. ; Bosnjakovic, B. ; et al.

Nucl.Phys.B 37 (1972) 349-363, 1972.

Inspire Record 75332 DOI 10.17182/hepdata.32973

Polarization and differential cross-section data are presented for elastic scattering of antiprotons on polarized protons at eight momenta between 0.9 and 2.5 GeV/ c . The data are fitted with a diffraction model.

8 data tables

Table 1

COMBINED 0.88 AND 0.95 GEV/C DATA.

Table 2

COMBINED 1.00 AND 1.04 GEV/C DATA.

Table 3

COMBINED 1.01 AND 1.055 GEV/C DATA.

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Measurements of the symmetries in the differential cross sections for anti-p p ---> anti-p p and anti-p p ---> pi- pi+ using polarized protons

Ehrlich, R.D. ; Etkin, A. ; Glodis, P. ; et al.

Phys.Rev.Lett. 28 (1972) 1147-1150, 1972.

Inspire Record 75507 DOI 10.17182/hepdata.21461

We report measured asymmetries as a function of polar scattering angle for the reactions p¯p→π−π+ and p¯p→p¯p, using a polarized proton target. The annihilation data, obtained at a p¯ momentum of 1.64 GeV/c, are the first asymmetry data to be collected for this channel. A fit of these data and published differential cross section data is made by a partial-wave expansion, and the results are compared with a previous analysis. The elastic scattering data, obtained at 1.64 and 2.55 GeV/c, are fitted with an eight-parameter strong-absorption model.

1 data table

Table 1

No description provided.

Elastic scattering of anti-protons on protons at 5 gev/c evidence for a backward peak

Chabaud, V. ; Eide, A. ; Lehmann, P. ; et al.

Phys.Lett.B 38 (1972) 449-451, 1972.

Inspire Record 75820 DOI 10.17182/hepdata.5678

Antiproton-proton elastic scattering has been measured at 5 GeV/c. A total of 30 000 events were observed in the angular range 17° < θ cm < 136°, corresponding to 0.3 < − t < 7.7 (GeV/ c 2 ). In addition to the known dip at − t = 0.5 ( GeV / c ) 2 , we observe a structure at about − t = 2 (GeV/ c ) 2 and a backward peak with a slope4.1 ± 0.6 (GeV/ c ) 2 . The extrapolated differential cross-section at u = 0 is 1.3 ± 0.8 μ b/(GeV/ c ) 2 .

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Anti-p p elastic and charge exchange scattering at 230 mev

Kohno, H. ; Kaneko, S. ; Murata, Y. ; et al.

Nucl.Phys.B 41 (1972) 485-492, 1972.

Inspire Record 75157 DOI 10.17182/hepdata.6879

Reactions p p → p p and p p → n n were studied at the kinetic energy 230 MeV of incident p by using bubble chamber films. Total cross sections for both of the reactions were found to be 51.2 ± 1.6 mb and 9.1 ± 0.6 mb, respectively. Differential cross sections are well explained by the phenomenological theory given by Bryan and Phillips.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Polarization measurements in medium-energy elastic scattering and high-energy models

Andersson, S. ; Daum, C. ; Erne, F.C. ; et al.

Conf.Proc.C 690905 (1969) 21-49, 1969.

Inspire Record 1091653 DOI 10.17182/hepdata.21876

None

2 data tables

Table 1

'1'.

Table 2

'2'. 'N1'. '3'.

$\bar{p} -p$ Elastic Scattering at 6.9 GeV/c

Kitagaki, T. ; Takahashi, K. ; Tanaka, S. ; et al.

Phys.Rev.Lett. 21 (1968) 175-177, 1968.

Inspire Record 54434 DOI 10.17182/hepdata.198

The p¯−p elastic scattering at 6.9 GeV/c was studied by the analysis of antiproton film taken by the Brookhaven National Laboratory 80-in. hydrogen bubble chamber. The cross section of the elastic scattering was 14.7 ± 1.5 mb. The angular distribution showed a dip in the region of −t≈0.6 (GeV/c)2 and a secondary maximum at −t≈0.8 (GeV/c)2.

2 data tables

Table 1

No description provided.

Table 2

No description provided.