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Study of the Reactions pi+ p --> pi+ p pi0 pi0 and pi+ p --> pi+ p pi0 pi0 pi0 at 3.5-GeV

Mine, P. ; Irwin, G. ; Jacquet, F. ; et al.

Nucl.Phys.B 124 (1977) 365-390, 1977.

Inspire Record 125737 DOI 10.17182/hepdata.35428

We study the reactions π + p → π + p nπ 0 ( n = 2, 3) at 3.5 GeV/ c , with 940 and 143 events, respectively. Complete final states are recorded and measured in a heavy liquid bubble chamber. We find the cross sections: sigma;(π + p → π + p 2π 0 ) = 1300 ± 210 μ b , σ(π + p → π + p 3π 0 ) = 320 ± 70 μ b , below the values predicted by statistical models from charged pion data. The mass spectra are given and channel separations are performed using Van Hove variables. Our results are in agreement with charged pion experiments. We present a description of the 3 π 0 system, with 61 events. Under certain hypotheses a spin-parity analysis favours 0 − at low mass and 1 − at high mass.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Investigation of the reaction pi- p ---> eta n at momenta up to 40-GeV/c

The Serpukhov-CERN collaboration Apel, W.D. ; Bertolucci, E. ; Bushnin, Yu.B. ; et al.

Sov.J.Nucl.Phys. 25 (1977) 194-197, 1977.

Inspire Record 118649 DOI 10.17182/hepdata.19079

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Study of the Reaction d (p, pi+) t at t(p) = 410-MeV, 605-MeV and 809-MeV

Aslanides, E. ; Bertini, R. ; Bing, O. ; et al.

Phys.Rev.Lett. 39 (1977) 1654-1656, 1977.

Inspire Record 126515 DOI 10.17182/hepdata.20981

Pion production on a CD2 target has been measured using the high-resolution magnetic spectrometer SPES I. Differential cross sections for the reaction D(p, π+)T have been determed at Tp=410, 605, and 809 MeV. The present data, together with previous results establish a complete angular distribution of the reaction D(p, π+)T at ∼ 600 MeV and the energy dependence of the differential cross section for this reaction at several constant momentum transfers.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Search for xi* Production in K- p Interactions at 2.87-GeV/c

Briefel, E. ; Gourevitch, S.A. ; Kirsch, L. ; et al.

Phys.Rev.D 16 (1977) 2706, 1977.

Inspire Record 118843 DOI 10.17182/hepdata.24494

Evidence is presented for production of Ξ* resonances, decaying into Ξπ, Ξ(1530)π, ΛK¯, and ΣK¯, in K−p interactions at 2.87 Gev/c. The data represent final combined results from a 30-events/μb hydrogen exposure and an 18-events/μb exposure in deuterium designed to study Ξ* production in the mass interval 1.46-2.07 GeV/c2. In addition to Ξ(1820) and Ξ(1940), signals have been observed at masses of 1630 MeV/c2 and 1860 MeV/c2 decaying into Ξ−π+ and YK¯, respectively. Reaction cross sections have been measured for all final states containing two visible signs of strangeness, and for the final states ΛK−K+ and Σ0K−K+.

4 data tables

Table 1

CROSS SECTIONS ARISING FROM VARIOUS TOPOLOGIES.

Table 2

K- P CROSS SECTIONS FROM DEUTERIUM TARGET EXPERIMENT. RESULTS ARE IN GOOD AGREEMENT WITH THE HYDROGEN DATA.

Table 3

No description provided.

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Inclusive Hadron Production by e+ e- Annihilation for s Between 13-GeV2 and 25-GeV2

The DASP collaboration Brandelik, R. ; Braunschweig, W. ; Martyn, H.-U. ; et al.

Phys.Lett.B 67 (1977) 358-362, 1977.

Inspire Record 118820 DOI 10.17182/hepdata.27573

Charged hadron production via e + e − → h ± X where h ± = π ± , K ± , p ̄ has been measured for s values between 13 and 25 GeV 2 . Inclusive cross sections and the evidence for scaling are presented.

1 data table

Table 1

No description provided.

rivet Analysis
Inclusive K0(s) Production in e+ e- Annihilation at Energies of 3.6-GeV to 5.0-GeV

The PLUTO collaboration Burmester, J. ; Criegee, L. ; Dehne, H.C. ; et al.

Phys.Lett.B 67 (1977) 367-370, 1977.

Inspire Record 118873 DOI 10.17182/hepdata.27568

We have measured the production cross section for K s 0 in e + e − annihilation from 3.6 to 5.0 GeV center of mass energy. A substantial increase of the K s 0 yield is observed around 4 GeV in qualitative agreement with the charm hypothesis.

4 data tables

Table 1

THE DATA GIVEN HERE AT 9.3 GEV AND ABOVE ARE REPORTED IN C. BERGER ET AL., PL 104B, 79 (1981). THE 12.0 AND 30 GEV DATA WERE TAKEN AT PETRA.

Table 2

No description provided.

Table 3

No description provided.

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Production of Charged Kaons by e+ e- Collisions Between s**(1/2) = 3.6-GeV and 5-GeV

The DASP collaboration Brandelik, R. ; Braunschweig, W. ; Martyn, H.-U. ; et al.

Phys.Lett.B 67 (1977) 363-366, 1977.

Inspire Record 118821 DOI 10.17182/hepdata.27582

The total cross section for K ± production in e + e − collisions was measured for cms energies between 3.6 and 5 GeV and was found to increase by a factor of 2–3 from 3.6 to 4.1 GeV.

1 data table

Table 1

No description provided.

Inclusive Production of Charged Pions in K- p Interactions at 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Faccini, M.L. ; Barloutaud, R. ; Berard, A. ; et al.

Nucl.Phys.B 127 (1977) 109, 1977.

Inspire Record 119612 DOI 10.17182/hepdata.35284

Results are presented on the inclusive π ± production in K − p interactions at 32.1 GeV/ c . The invariant longitudinal distributions have been calculated both for π + and π − in the backward c.m. hemisphere and extrapolated in the forward hemisphere under some physical assumptions. The inclusive cross sections for π + and π − amount to 32.9 ± 1.5 mb and 35.0 ± 0.7 mb respectively. The energy dependence of the inclusive pion production has been analyzed in the framework of Mueller-Regge phenomenology both in the proton fragmentation and in the central region.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Inclusive phi Production in pi- p Interactions at 16-GeV/c

The Bari-Bonn-CERN-Daresbury-Glasgow-Liverpool-Milan-Vienna collaboration Ghidini, B. ; Navach, F. ; Palano, A. ; et al.

Phys.Lett.B 68 (1977) 186, 1977.

Inspire Record 119248 DOI 10.17182/hepdata.48929

Inclusive φ production is studied in π − p collisions at 16 GeV/ c . The φ cross section for Feynman variable x φ > 0.2 is found to be (15.5 ± 3.6) μb. This leads to an extrapolated cross section of (29.9 ± 7.0) μb for x φ > 0.0. Fitting the momentum transfer squared distribution of the φ to the form e −bp 2 T gives an average slope of b = (2.4 ± 0.3) (GeV/ c −2 for x φ > 0.5.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

DATA OBTAINED FROM FIGURE BY A.A. LEBEDEV.

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