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INCLUSIVE ETA PRODUCTION IN P P COLLISION AT ISR ENERGIES

Amaldi, E. ; Beneventano, M. ; Borgia, B. ; et al.
Nucl.Phys.B 158 (1979) 1-10, 1979.
Inspire Record 145095 DOI 10.17182/hepdata.34663

We report on the experimental results obtained at the ISR for the η particle production at 90° and √ s = 30.6 and 53.2 GeV. We determine the invariant cross section and the p t distribution in the interval 1 ⩽ p t ⩽ 5 GeV/ c . We find that the p t distribution has the same shape of the π 0 production and differ from it by a constant factor R 90° = 0.5 ± 0.07.

1 data table
Table 1

No description provided.


NONDIFFRACTIVE TWO-BODY CHANNELS IN REACTIONS K+ P ---> K0 PI+ P AND K+ P ---> K+ PI- PI+ P AT 32-GeV/c. FRANCE-SOVIET UNION AND CERN-SOVIET UNION COLLABORATIONS

Givernaud, A. ; Cochet, C. ; Denegri, D. ; et al.
Nucl.Phys.B 153 (1979) 280-298, 1979.
Inspire Record 146578 DOI 10.17182/hepdata.34765

We present results on a number of non-diffractive two-body channels contributing to reactions K + p→K 0 π + p and K + p→K + π − π + p. The data come from an exposure of the Mirabelle bubble chamber to an r.f. separated K + beam of 32 GeV/ c at the Serpukhov accelerator. Total cross sections are given for the final states K ∗+ (890) p , K ∗+ (1420) p , K 0 Δ ++ (1232), K ∗+ (890) p , Δ ++ (1232), K ∗0 (1420) Δ ++ (1232), K ∗0 (1780) Δ ++ (1232) and K ∗0 (890) Δ ++ (1950) . The differential cross sections are given for all channels with sufficient statistics. The energy dependence of the total and differential cross sections is studied.

3 data tables
Table 1

FROM K0 P PI+ FINAL STATE.

Table 2

DOUBLE RESONANCE CHANNEL CROSS SECTIONS CORRECTED FOR BACKGROUND, BREIT-WIGNER TAILS AND DIFFRACTIVE PROCESSES.

Table 3

No description provided.


Polarization Measurements in π p+ p and K p+ p elastic scattering at 6 and 12 GeV/ c with the CERN polarized deuteron target

Fujisaki, M. ; Babou, M. ; Bystricky, J. ; et al.
Nucl.Phys.B 151 (1979) 206-212, 1979.
Inspire Record 145595 DOI 10.17182/hepdata.34795

The polarization in π + p → π + p and K + p → K + p has been measured at 6 and 12 GeV/ c in the four-momentum transfer interval 0.1 ⩽ | t | ⩽ 2.0 (GeV/ c ) 2 by scattering on protons of a polarized deuteron target. Comparison with existing results obtained with polarized proton targets shows good general agreement and no evidence for asymmetry effects due to the presence of the spectator neutron. For K + p elastic scattering polarization the experiment yields improved statistics, especially at 6 GeV/ c

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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SINGLE DIRECT PHOTON PRODUCTION IN P P COLLISIONS AT S**(1/2) = 53.2-GEV IN THE P(T) INTERVAL 2.3-GEV/C TO 5.7-GEV/C

Amaldi, E. ; Beneventano, M. ; Borgia, B. ; et al.
Nucl.Phys.B 150 (1979) 326-344, 1979.
Inspire Record 145596 DOI 10.17182/hepdata.34796

We report the results of an experiment made at the CERN ISR to investigate the possible diret production of single photons in pp collisions at √ s = 53.2 GeV at 90° and in the p t interval 2.3 to 5.7 GeV/ c . The value of the ratio R = n γ / n π 0 is compatible with zero for low p t ⪅ 3 GeV/ c but, in spite of the large error, shows a trend to increase for larger p t .

3 data tables
Table 1

THIS USES THE SO-CALLED D2L TRIGGER (SEE PAPER).

Table 2

THIS USES THE SO-CALLED D2MAX TRIGGER (SEE PAPER).

Table 3

THIS USES THE SO-CALLED D2MAX TRIGGER (SEE PAPER).


MULTI - HADRON PRODUCTION IN E+ E- ANNIHILATION AT 1.45-GEV - 1.61-GEV center-of-mass ENERGY

Esposito, B. ; Marini, A. ; Pallotta, M. ; et al.
Lett.Nuovo Cim. 25 (1979) 5-12, 1979.
Inspire Record 145867 DOI 10.17182/hepdata.37370

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


ENERGY DEPENDENCE OF THE REACTIONS K- N ---> ANTI-K* DELTA AND K+ N ---> K* DELTA

Berny, L. ; Dado, S. ; Goldberg, J. ; et al.
Lett.Nuovo Cim. 25 (1979) 185-189, 1979.
Inspire Record 146261 DOI 10.17182/hepdata.37382

None

1 data table
Table 1

FIRST CROSS SECTION GIVEN WITH MORE DETAILS IN S. TOAFF ET AL., NP B146, 368 (1978). THE SECOND CROSS SECTION IS CALCULATED FROM THE FIRST USING ISOSPIN SYMMETRY.


K+ P AND K- P ELASTIC SCATTERING AT 32.1-GEV/C. FRANCE-SOVIET UNION AND CERN-SOVIET UNION COLLABORATIONS

Lewin, C. ; Denegri, D. ; Givernaud, A. ; et al.
Z.Phys.C 3 (1979) 275-284, 1979.
Inspire Record 148166 DOI 10.17182/hepdata.15899

None

2 data tables
Table 1

CROSS-OVER IS AT -T = 0.17 +- 0.02 GEV**2. DIVIDE BY 20 TO GET D(SIG)/DT IN MB/GEV**2. CORRECTED FOR LOST EVENTS FOR -T < 0.12 GEV**2.

Table 2

FROM QUADRATIC EXPONENTIAL FIT TO D(SIG)/DT. BOTH STATISTICAL AND SYSTEMATIC ERRORS INCLUDED IN VALUES.


INCLUSIVE DELTA++ (1232) AND SIGMA+- (1385) PRODUCTION IN K- P INTERACTIONS AT 32-GEV/C. FRANCE-SOVIET UNION AND CERN-SOVIET UNION COLLABORATIONS

Walter, M. ; Becker, L. ; Klabuhn, J. ; et al.
Z.Phys.C 3 (1979) 89-95, 1979.
Inspire Record 148164 DOI 10.17182/hepdata.15987

We have studied inclusiveΔ++ (1232),∑+ (1385), and∑− (1385) baryon resonance production inK−p interactions at 32 GeV/c. The inclusive and topological cross sections are estimated and compared with published results at lower energies. No energy variation of the cross section is observed forΔ++ (1232) and only a slight decrease is seen in case of∑± (1385). The production properties are investigated through longitudinal and transverse momentum distributions. TheΔ++ (1232) is dominantly produced in the target fragmentation region. The∑+ (1385) is produced both in the target fragmentation region and in the central region, while the∑− (1385) is predominantly produced in the central region. About 20% of the final state protons are produced via aΔ++ (1232) decay and about 25% of the Λ produced come from the decay of∑+ (1385) and∑− (1385).

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Measurement of the Elastic Scattering of Neutrinos and Anti-neutrinos by Protons

Entenberg, A. ; Horstkotte, J. ; Kozanecki, W. ; et al.
Phys.Rev.Lett. 42 (1979) 1198, 1979.
Inspire Record 140053 DOI 10.17182/hepdata.20799

We have observed 217 (66) events of the process νp→νp (ν¯p→ν¯p) with an estimated background of 82 (28). The neutral-to-charged-current ratios are σ(νp→νp)σ(νn→μ−p)=0.11±0.02 and σ(ν¯p→ν¯p)σ(ν¯p→μ+n)=0.19±0.05 for 0.40<Q2<0.90 (GeV/c)2, where -Q2 is the square of the momentum transfer to the nucleon. These yield σ(ν¯p→ν¯p)σ(νp→νp)=0.53±0.17. The neutral-current form factors at Q2=0 are GE=0.5−0.5+0.25, GM=1.0−0.04+0.35, and gA=0.5−0.15+0.2.

1 data table
Table 1

No description provided.


STUDY OF INCLUSIVE REACTIONS K- P ---> ANTI-K0 X AND K- P ---> LAMBDA0 X AT 6.5-GeV/c

De Clercq, C. ; Johnson, D.P. ; Lemonne, J. ; et al.
Phys.Rev.D 19 (1979) 3197-3209, 1979.
Inspire Record 146772 DOI 10.17182/hepdata.24272

Inclusive V0 production in 6.5-GeV/c K−p interactions is studied using the ANL 12-ft-diameter hydrogen bubble chamber. The total cross sections for inclusive K¯0 and Λ0 production are σ(K¯0)=7.98±0.49 mb and σ(Λ0)=3.94±0.24 mb. Semi-inclusive differential cross sections are determined as functions of Feynman x and transverse momentum squared of the V0's and of four-momentum transfer to the V0. The average charge multiplicity, the ratio 〈nc〉D, and the correlation function f2cc for the neutrally charged hadronic system recoiling from the V0 are determined as functions of the mass of the recoiling system. Results are used to examine universal aspects of multiparticle production.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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