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

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.


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

No description provided.

No description provided.


GENERAL FEATURES OF CHARGED PARTICLE PRODUCTION IN ANTI-P P INTERACTIONS AT 100-GEV/C

Ward, C.P. ; Ward, D.R. ; Ansorge, R.E. ; et al.
Nucl.Phys.B 153 (1979) 299-333, 1979.
Inspire Record 146577 DOI 10.17182/hepdata.8129

We present new data on charged particle production in p p interactions at 100 GeV/ c . Comparisons are made between p p annihilations (estimated by differences) between corresponding p p and pp data samples) and e + e − annihilation into hadrons. A technique for separating the inclusive proton and pion spectra is described and the resulting pion spectra are studied in terms of Feynman x , rapidity and p T . Comparison with pp data allows us to estimate the pion spectra in p p annihilations and we find agreement with predictions of Mueller-Regge theory. We also present results on semi-inclusive π ± and proton production, give updated topological cross sections and describe further attempts to isolate effects due to annihilations. Finally we investigate the diffractive excitation of the antiproton into low-mass states by studying events with a slow recoil proton.

5 data tables

No description provided.

No description provided.

No description provided.

More…

Results from pluto at petra

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
1 (1979) 343-349, 1979.
Inspire Record 148976 DOI 10.17182/hepdata.45229

None

1 data table

No description provided.


Inclusive $\rho^0$ Production in $p p$ Collisions at the {CERN} {ISR}

The British-French-Scandinavian collaboration Albrow, M.G. ; Almehed, S. ; Booth, P.S.L. ; et al.
Nucl.Phys.B 155 (1979) 39-51, 1979.
Inspire Record 133360 DOI 10.17182/hepdata.34664

The inclusive production of ϱ 0 mesons in pp collisions has been measured at five c.m. energies from √ s = 23.6 to 63.0 GeV. The cross sections and the production spectra as a function of transverse momentum and rapidity are discussed.

2 data tables

No description provided.

No description provided.


SPECTROMETER STUDY OF PHI MESON ELECTROPRODUCTION

Dixon, Roger L. ; Galik, R. ; Larson, D. ; et al.
Phys.Rev.D 19 (1979) 3185, 1979.
Inspire Record 133151 DOI 10.17182/hepdata.24302

We report measurements of the electroproduction of φ mesons from hydrogen at Q2 values of 0.23, 0.43, and 0.97 GeV2 with |t| varying from 0.125 to 1.3 GeV2 at each Q2 point. The data show no evidence for a Q2 dependence of the slope of the t distribution, the forward cross section falls with increasing Q2 as the square of the φ propagator, the decay angular distributions agree with the predictions of s-channel helicity conservation, and the ratio of the longitudinal to the transverse component increases linearly with Q2.

1 data table

No description provided.


Hadron Production in Muon - Proton and Muon - Deuteron Collisions

Loomis, W.A. ; Gordon, B.A. ; Pipkin, F.M. ; et al.
Phys.Rev.D 19 (1979) 2543-2571, 1979.
Inspire Record 132759 DOI 10.17182/hepdata.24303

This paper reports measurements of the hadrons produced in the inelastic scattering of 147-GeV muons by protons and deuterons in an experiment carried out at Fermi National Accelerator Laboratory. Both the scattered muon and the hadrons were measured in a large spectrometer. Properties of the hadron spectra are presented for proton, deuteron, and neutron targets and compared with theoretical models and with hadron spectra from related processes. Emphasis is placed on the quark-parton model and the data are found to be in substantial agreement with it. The average transverse momentum of the hadrons with respect to the virtual photon direction shows no dependence on the muon scattering variables. The data display "jet behavior" of the inclusive hadrons comparable to that found in e+e− annihilations.

2 data tables

No description provided.

No description provided.


Production and Decay Properties of the $D(1285)$ Meson in $K^- p$ Interactions at 4.2-{GeV}/$c$

The Amsterdam-CERN-Nijmegen-Oxford collaboration Gurtu, A. ; Gavillet, P. ; Armenteros, R. ; et al.
Nucl.Phys.B 151 (1979) 181-192, 1979.
Inspire Record 133183 DOI 10.17182/hepdata.34791

We have studied the production and decay of the D(1285) meson in the reaction K − p→ Λ D at an incident K − momentum of 4.2 GeV/ c . The cross section for this reaction is 11 ± 3 μ b and the branching ratios D→ KK π /D → ηππ and D → 4 π /D → ηππ are found to be 0.42 ± 0.15 and 0.7 ± 0.5, respectively. The proportion of D → ηπ + π − going through the intermediate δ ± π ∓ states is 0.72 ± 0.15. Forward and backward exchange mechanisms are found to contribute in the ratio 3 : 2.

1 data table

ABOUT 60 PCT OF THE D(1285) PRODUCTION OCCURS IN THE FORWARD HEMISPHERE.


$\rho^0$ Production in $\pi^- p$ Interactions at 100-{GeV}/$c$, 200-{GeV}/$c$ and 360-{GeV}/$c$

Higgins, P.D. ; Shephard, W.D. ; Biswas, N.N. ; et al.
Phys.Rev.D 19 (1979) 65, 1979.
Inspire Record 7275 DOI 10.17182/hepdata.4591

Inclusive and semi-inclusive cross sections for gp0 production in 100, 200, and 360 GeV/c π−p interactions are presented. Differential cross sections for ρ0 production as functions of c.m. rapidity and transverse momentum are compared with the corresponding differential cross sections for pion production. Effects of various methods of estimating background on the values obtained for ρ0 production cross sections are discussed. About 10% of the final-state charged pions appear to come from ρ0 decay. Thus, while ρ0 production and decay is a significant source of final-state pions, other sources must contribute the majority of the produced pions.

14 data tables

No description provided.

No description provided.

No description provided.

More…

Neutral Strange Particle Production by 300-GeV Protons

Skubic, P. ; Overseth, O.E. ; Heller, Kenneth J. ; et al.
Phys.Rev.D 18 (1978) 3115-3144, 1978.
Inspire Record 136908 DOI 10.17182/hepdata.24371

A neutral beam designed to transmit a high flux of Λ0 hyperons with momenta above 50 GeV/c has been built and operated at Fermilab. Inclusive production cross sections per target nucleus have been measured for p+A→Λ0+X, p+A→KS0+X, and p+A→Λ¯0+X with 300-GeV protons incident on solid targets A=berylium,copper,andlead. The region of phase space covered is predominantly projectile fragmentation: 0.2<~x<~1, 0<~p⊥<~2 GeV/c. The A dependence of the inclusive cross sections is analyzed. The cross sections are compared to other work in pp collisions by extrapolating the A dependence to A=1. The results of measurements of Λ0 and Λ¯0 polarization from the beryllium target are presented.

9 data tables

No description provided.

No description provided.

No description provided.

More…