de Barbaro, Pawel
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General characteristics of the annihilation reaction p p ---> 3pi+ 3pi- (pi0) at 3.6 gev/c

Atherton, H.W. ; Blair, W.M.R. ; Celnikier, L.M. ; et al.
Nucl.Phys.B 18 (1970) 221-245, 1970.
Inspire Record 62649 DOI 10.17182/hepdata.34415

In the reaction p p → 3π + 3π − 2227 events, and in the reaction p p → 3π + 3π − π 0 6578 events have been analyzed. The general characteristics of the reactions, such as total cross sections, angular and momentum distributions, the production of ϱ, f, ω and η mesons, and angular correlations are presented.

4 data tables
Table 1

No description provided.

Table 2

THETA being the angle between PI+ and P (or PI- and PBAR) in CMS.

Table 3

THETA being the angle between PI+ and P (or PI- and PBAR) in CMS.

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Observation of small angle proton proton elastic scattering at 30 gev and 45 gev center-of-mass energies

Holder, M. ; Radermacher, E. ; Staude, A. ; et al.
Phys.Lett.B 35 (1971) 355-360, 1971.
Inspire Record 69228 DOI 10.17182/hepdata.5781

Small angle elastic scattering events have been observed at the CERN Intersecting Storage Rings. Directions of both particles as well as the collision vertex are reconstructed with the help of four sets of spark chambers, two for each of the two arms. The elastic nature of the events is demonstrated by a collinearity requirement. We find values for the (diffraction) slope parameter in disagreement with the simple linear extrapolation of lower energy (Surpukov) data.

4 data tables
Table 1

NUMBER OF EVENTS 87364.

Table 2

NUMBER OF EVENTS 8305.

Table 3

No description provided.

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Determination of the proton proton elastic cross-section at 30-GeV center-of-mass energy

Holder, M. ; Radermacher, E. ; Staude, A. ; et al.
Phys.Lett.B 35 (1971) 361-364, 1971.
Inspire Record 69227 DOI 10.17182/hepdata.28484

The absolute luminosity of the CERN Intersecting Storage Rings has been determined by the Van der Meer method. Combining the measurement with small angle proton-proton elastic events, we find σ elastic = (6.8±0.6)mb.

1 data table
Table 1

No description provided.


Further results on small angle elastic proton proton scattering at very high energies

Holder, M. ; Radermacher, E. ; Staude, A. ; et al.
Phys.Lett.B 36 (1971) 400-402, 1971.
Inspire Record 69148 DOI 10.17182/hepdata.28407

This work extends our previous investigations at the CERN Intersecting Storage Rings, with improved statistics at three different energies, wider angular range and a better control over systematic errors. Values for the (diffraction) shape parameter b are given.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Evidence for b(1220) production in an analysis of the reaction k- d ---> p(s) lambda pi+ pi- pi- pi0 at 3 gev/c

The SABRE collaboration Hoogland, W. ; Kluyver, J.C. ; De Vries, T. ; et al.
Phys.Lett.B 33 (1970) 631-634, 1970.
Inspire Record 69351 DOI 10.17182/hepdata.28535

In an analysis of the reaction K − n →Λ4π at 3 GeV c we find evidence for the production of the B(1220) resonance, mainly decaying in ωπ. For the mass and width we find (1236 ± 15) MeV c 2 and (132±20) MeV c 2 respectively. The cross section for the reaction K − n→ Λ +B(1220) is found to be (102±26) μ b.

1 data table
Table 1

No description provided.


Decay distributions in the reaction k+ p ---> k*0(1420) delta++ at 5 gev/c and quark model predictions

Eskreys, A. ; Malecki, P. ; Zalewski, K. ; et al.
Nucl.Phys.B 29 (1971) 587-600, 1971.
Inspire Record 68631 DOI 10.17182/hepdata.33559

Joint decay distributions have been studied in the reaction K + p → K ∗o (1420)Δ ++ at 5.0 GeV/ c in the transversity spin reference frame. Two alternative spin-parity assignments 2 + and 3 − for the K ∗ resonance have been considered and a comparison with the quark-model predictions has been made. The predictions of the quark model are equally well satisfied by the experimental results for both the 2 + and 3 − spin-parity assignments.

1 data table
Table 1

No description provided.


Study of k*0(892) delta++(1236) production from k+ p interactions at 3 gev/c

Buchner, K. ; Dehm, G. ; Goebel, G. ; et al.
Nucl.Phys.B 29 (1971) 381-397, 1971.
Inspire Record 68636 DOI 10.17182/hepdata.33527

The reaction K + p → K ∗o (892) Δ ++ (1236) has been studied at 3 GeV/ c in both a hydrogen and a deuterium bubble chamber experiment. The production mechanism is described by a Regge-type model using π- and B-exchange. The joint decay distributions are analysed in various frames and compared with quark-model predictions.

19 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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K*-(890) p and k*-(1400) p final states in k- p interactions at 3.95 gev/c

Rouge, A. ; Videau, H. ; Volte, A. ; et al.
Nucl.Phys.B 46 (1972) 29-45, 1972.
Inspire Record 74954 DOI 10.17182/hepdata.32777

Differential cross sections and density matrix elements are presented for K ∗− (890) and K ∗− (1400) produced in the reaction K − p→K O π − p at 3.95 GeV/ c . The cross sections are decomposed into contributions due to different exchange mechanisms.

5 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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Study of the reaction k- p ---> anti-k n pi at 4.2 gev/c

Tiecke, H.G.J M. ; Crijns, F.J.G H. ; Heinen, P.M. ; et al.
Nucl.Phys.B 39 (1972) 596-615, 1972.
Inspire Record 75240 DOI 10.17182/hepdata.32931

Results are presented on effective-mass distributions, differentisl cross sections and longitudinal c.m. momentum distributions for the channels K − p → K − p π o , K o p π − and K − π + n , obtained from a sample of approximately 28 000 inelastic two-pronged interactions at 4.2 GeV/ c incident momentum. The results are in satisfactory agreement with the prediction of a generalized Veneziano-model corrected for (non-dual) π -and pomeron exchange. For the channel K − pπ o pomeron exchange contributes about 20% of the cross section. In the channel K − π + n the dual, pion and pomeron contributions are responsible for resp. 15%, 65% and 20% of the total cross section.

5 data tables
Table 1

BREIT-WIGNER FITS.

Table 2

MEASURED OFF GRAPH.

Table 3

MEASURED OFF GRAPH.

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