Prakash, Y.
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Differential cross-section and recoil proton polarization of eta-meson photoproduction at 890 mev

Hongoh, M. ; Kikuchi, K. ; Kobayakawa, H. ; et al.
Lett.Nuovo Cim. 2S2 (1971) 317-320, 1971.
Inspire Record 70913 DOI 10.17182/hepdata.37410

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Charged-pi photoproduction at 180 degress in the energy range between 300 and 1200 mev

Fujii, T. ; Okuno, H. ; Orito, S. ; et al.
Phys.Rev.Lett. 26 (1971) 1672-1675, 1971.
Inspire Record 68981 DOI 10.17182/hepdata.21616

The differential cross sections at 180° for the reactions γ+p→π++n and γ+n→π−+p were measured using a magnetic spectrometer to detect π± mesons. In order to reduce the spread of energy resolution due to the nucleon motion inside the deuteron, a photon difference method was employed with a 50-MeV step for the reaction γ+n→π−+p. The data show structures at the second- and the third-resonance regions for both reactions. A simple phenomenological analysis was made for fitting the data, and the results are compared with those of previous analyses.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Anti-p p annihilation into pi+ rho at small angles between 1 and 2 gev/c

Yoh, J.K. ; Barish, B. ; Nicholson, H.W. ; et al.
Phys.Rev.Lett. 26 (1971) 922-925, 1971.
Inspire Record 69017 DOI 10.17182/hepdata.21588

We have studied the process p¯p into π+X− using wire spark chambers. The data cover the angular range of cosθp¯π+* between 0.96 and 1.0 at several incident momenta between 1 and 2 GeVc. The reaction p¯p→π+ρ− was observed with (dσdΩ)* of the order of 100 μb/sr at several momenta.

1 data table
Table 1

READ FROM GRAPH.


Photoproduction of ϱ0 and ω in γd interactions at 4.3 GeV

Eisenberg, Y. ; Haber, B. ; Kogan, E. ; et al.
Nucl.Phys.B 42 (1972) 349-368, 1972.
Inspire Record 67692 DOI 10.17182/hepdata.69930

Coherent photoproduction of ϱ 0 and ω at E γ = 4.3 GeV is observed. The ratios ϱ 0 d/ ω d and ϱ 0 d/ ϱ 0 p are discussed and compared with theoretical predictions. By comparing our data with total photoabsorption cross sections we determine the direct vector meson-photon coupling to be γ ϱ 2 /4 π = 0.29 ± 0.06. With this value we find the VDM relations between photoproduction and Compton scattering well satisfied.

7 data tables
Table 3

No description provided.

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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 in elastic pi- p scattering at 16 momenta between 865 and 2732 mev/c

Albrow, M.G. ; Andersson-Almehed, S. ; Bosnjakovic, B. ; et al.
Nucl.Phys.B 37 (1972) 594-620, 1972.
Inspire Record 75295 DOI 10.17182/hepdata.8091

Polarization distributions and differential cross section data for elastic scattering of negative pions on protons between 865 and 2732 MeV/ c are presented. They are compared with published phase-shift analyses.

48 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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The reactions $k^{+}d \to k^{+}d, k^{+}d \to k^{+}pn$ and $k^{+}d \to k^{0}pp$ at 3 Gev/$c$ with an investigation of $k^+n$ scattering

Buchner, K. ; Dehm, G. ; Geist, Walter M. ; et al.
Nucl.Phys.B 44 (1972) 110-124, 1972.
Inspire Record 75078 DOI 10.17182/hepdata.32864

As a partial result of an analysis of K + d interactions at 3 GeV/ c produced in the 81 cm Saclay bubble chamber, we present data on K + differential cross sections for the following reactions: K + d → K + d, K + d → K + pn, K + d → K 0 pp . A set of parameters describing the K + n elastic scattering has been obtained from a simulataneous fit, based on the Glauber model. to the three experimental differential cross sections and to the K + d total cross section, giving α n = 1.7 ± 0.5 GeV −2 for the slope α n of the differential cross section, and ρ n = −0.16 ± 0.3 for the ratio of the real to the imaginary part of the forward scattering amplitude. The D-wave function of the deuteron has been found to give a non-negligible contribution to the coherent reaction.

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of the k- pi+ pi- n final state in k- d interactions at 5.5 gev/c

Davis, R. ; Ammar, R. ; Kropac, W. ; et al.
Nucl.Phys.B 44 (1972) 45-82, 1972.
Inspire Record 75079 DOI 10.17182/hepdata.32866

The reaction K − d → K − π + π − n p s was studied in a bubble chamber experiment. The cross section was measured to be 1.3 ± 0.2 mb. The final state is dominated by K ∗0 (890) , K ∗0 (1420) and Δ − (1236) production. Partial cross sections, differential cross sections and decay angular distributions of the K ∗0 (890) δ − (1236) final state were found to give good agreement with the predictions of Białas and Zalewski obtained from the quark model. The final state K − π + Δ − (1236) is analyzed by use of the Van Hove plot.

9 data tables
Table 1

DEUTERIUM CROSS SECTIONS WITH SPECTATOR PROTON. PROBABLY NOT CORRECTED FOR K* BRANCHING RATIO INTO <K- PI+>.

Table 2

SLOPE IS 5.75 +- 0.46 GEV**2 FOR -TP < 0.4 GEV**2.

Table 3

GOTTFRIED-JACKSON FRAME.

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Isobar production and diffraction dissociation in p n ---> p p pi- at 7.0 gev/c

Yekutieli, G. ; Yaffe, D. ; Shapira, A. ; et al.
Nucl.Phys.B 40 (1972) 77-97, 1972.
Inspire Record 75249 DOI 10.17182/hepdata.32894

The reaction pn → pp π − at 7.0 GeV/ c is studied in a pd experiment. Observations on isobar production and low-mass enhancement are reported. The I = 1 2 isobars and the low-mass enhancement produced at the neutron vertex are discussed in terms of the diffraction dissociation plus duality model.

1 data table
Table 1

PART OF THE DIFFERENCE BETWEEN DEL PRODUCTION AT THE NEUTRON AND AT THE PROTON VERTICES COULD ARISE FROM DEUTERON EFFECTS.


Study of four-prong events in pi+ p interactions at 3.5 gev/c

Ronat, E.E. ; Eisenberg, Y. ; Lyons, L. ; et al.
Nucl.Phys.B 38 (1972) 20-36, 1972.
Inspire Record 75333 DOI 10.17182/hepdata.32958

The non-strange four-prong events of π + p interactions at 3.5 GeV/ c are studied. Cross sections are calculated for all resonance productions in the channels π + p → p π + π + π − ( σ T = 3.18 ± 0.13 mb) and π + p → p π + π + π − π o ( σ T = 4.03 ± 0.16 mb). The dominant two body reactions Δ ++ ϱ o and Δ ++ ω o are investigated in detail, and production and decay distributions are presented as well as joint decay density matrix elements and joint correlation terms. The Δ ++ ϱ o reaction is compared to predictions of OPE with absorption and the Δ ++ ω o is compared to rho-exchange with sharp cutoff.

7 data tables
Table 1

FOUR-PRONG, NON-STRANGE CROSS SECTIONS. SYSTEMATIC ERROR INCLUDED.

Table 2

BREIT-WIGNER RESONANCE FITS, ALLOWING FOR PHASE SPACE AND RELEVANT REFLECTIONS, TO <P PI+ PI+ PI-> FINAL STATE.

Table 3

BREIT-WIGNER RESONANCE FITS, ALLOWING FOR PHASE SPACE AND RELEVANT REFLECTIONS, TO <P PI+ PI+ PI- PI0> FINAL STATE.

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