Cooper-Sarkar, A.M.
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Inclusive Photoproduction of Neutral Strange Particles at 20-{GeV}

The SLAC Hybrid Facility Photon collaboration Abe, K. ; Bacon, T.C. ; Ballam, Joseph ; et al.
Phys.Rev.D 29 (1984) 1877, 1984.
Inspire Record 190724 DOI 10.17182/hepdata.23774

We have studied inclusive production of KS0, Λ, and Λ¯ particles in 20-GeV γp interactions and have found features similar to those observed in both hadronic and leptonic interactions. The production cross sections, charged-particle multiplicities, and average Λ polarization are reported. Inclusive distributions of x and pT are shown and discussed in terms of quark fragmentation models. Production cross sections for K*(890) and Σ*(1385) are also reported.

9 data tables
Table 1

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Table 2

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Table 3

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Neutral Strange Particle Production in $K^+ p$ Interactions

The CERN-Soviet collaboration Ajinenko, I.V. ; Chliapnikov, P.V. ; Falaleev, V.P. ; et al.
Z.Phys.C 23 (1984) 307, 1984.
Inspire Record 193424 DOI 10.17182/hepdata.10722

The production properties ofKs0,\(\bar \Lambda\) andK+p interactions at 32 GeV/c are investigated using the final statistics of the experiment. We present total and semi-inclusive cross sections and aver-age multiplicities. Estimates are given of the diffractive dissociation contributions to total and differential cross sections. Thex-,pT−, and transverse mass dependence of inclusive and semi-inclusive distributions is discussed as well as properties of “prompt”Ks0's. The ratio of “prompt”K890+ (K8900) to “prompt”K0 cross sections is measured to be 1.03±0.12 (0.98±0.17). From a comparison of\(\bar \Lambda\) production inK±p interactions at 32 GeV/c, we estimate a strange sea-quark suppression of 0.26 ±0.02. The double differential cross sections ofKs0's is studied as a function of Feynman-x andpT2, and a Triple-Regge fit performed. The data are compared in detail to versions of the Lund-model for low-pT hadronic collisions.

27 data tables
Table 1

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Table 2

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Measurement of Hadronic Azimuthal Distributions in Deep Inelastic Muon Proton Scattering

The European Muon collaboration Aubert, J.J. ; Bassompierre, G. ; Becks, K.H. ; et al.
Phys.Lett.B 130 (1983) 118-122, 1983.
Inspire Record 191233 DOI 10.17182/hepdata.30663

Results on moments of the azimuthal angle ϕ of final state hadrons from 120 GeV and 280 GeV μp scattering are presented. A ϕ asymmetry is observed and its W 2 , Q 2 , z and p T dependences compared with model calculations which include intrinsic transverse momentum and first order QCD corrections. These studies indicate that the observed asymmetry is mainly due to intrinsic transverse momentum k T .

8 data tables
Table 1

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Table 2

Typical phi distribution.

Table 3

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MEASUREMENT OF CROSS-SECTIONS FOR NEUTRAL STRANGE PARTICLE PRODUCTION IN anti-p p INTERACTIONS AT 32-GeV/c AND COMPARISON WITH THE p p INTERACTION DATA

Ermolov, P.F. ; Kruglov, N.A. ; Proskuryakov, A.S. ; et al.
Sov.J.Nucl.Phys. 39 (1984) 738, 1984.
Inspire Record 192737 DOI 10.17182/hepdata.40993

None

3 data tables
Table 1

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ESTIMATION OF CROSS-SECTIONS OF DIFFERENT CHANNELS OF STRANGE PARTICLE PRODUCTION IN anti-p p INTERACTIONS AT 32-GeV/c

Ermolov, P.F. ; Kruglov, N.A. ; Proskuryakov, A.S. ; et al.
IFVE-83-93, 1983.
Inspire Record 193862 DOI 10.17182/hepdata.41021

None

0 data tables

INCLUSIVE PHOTOPRODUCTION OF pi0 AND eta0 MESONS FOR PHOTONS IN THE 100-GeV ENERGY RANGE

Breakstone, A.M. ; Cheng, D.C. ; Dorfan, D.E. ; et al.
Phys.Rev.Lett. 51 (1983) 1617, 1983.
Inspire Record 13620 DOI 10.17182/hepdata.20521

Inclusive distributions are presented for final-state π0 and η0 mesons produced in γp interactions. For photon energies from 50 to 130 GeV, both cross sections scale for fractional momenta xF>~0.30. The average transverse momentum for both mesons is approximately constant with energy and equal to 0.51±0.05 GeV/c at large xF. The η0π0 ratio similarly rises from 0.07±0.03 at xF=0.38 to 0.30±0.09 at xF=0.90. The π0 distributions are in good agreement with those seen in the scattering of highly virtual incident photons.

1 data table
Table 1

No description provided.


A STUDY OF JET LIKE STRUCTURE OF LOW P(T) K- p AND anti-p p INTERACTIONS AT 32-GeV/c

The CERN-Soviet collaboration Babintsev, V.V. ; Bumazhnov, V.A. ; Gensch, U. ; et al.
IFVE-83-95, 1983.
Inspire Record 191940 DOI 10.17182/hepdata.10579

None

29 data tables
Table 1

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Differences in Leading Baryon Production From $p \bar{p}$ and $p p$ Collisions With $\sqrt{s}=31$-{GeV} at the {CERN} {ISR}

Chauvat, P. ; Cousins, R.D. ; Erhan, S. ; et al.
Phys.Lett.B 127 (1983) 384-388, 1983.
Inspire Record 190333 DOI 10.17182/hepdata.30717

Significant differences are observed between forward-produced Δ ++ (1232) and Λ 0 's in pp interactions and their corresponding anti-particles in p p interactions, as expected from quark counting and single q q annihilation. A possible relationship between these results and the p p -pp total cross section difference is discussed.

2 data tables
Table 1

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INCLUSIVE eta MESONS PRODUCTION BY POSITIVE HADRONS AT 10.5-GeV/c

Akimenko, S.A. ; Bannikov, A.V. ; Belousov, V.I. ; et al.
Sov.J.Nucl.Phys. 39 (1984) 411, 1984.
Inspire Record 191941 DOI 10.17182/hepdata.10652

None

12 data tables
Table 1

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Limits on $J/\psi$ and $\Upsilon$ Production in $e^+ e^-$ Interactions at $\sqrt{s}=29$-{GeV}

Matteuzzi, C. ; Abrams, G.S. ; Amidei, D. ; et al.
Phys.Lett.B 129 (1983) 141-144, 1983.
Inspire Record 189580 DOI 10.17182/hepdata.30662

A search has been made for the inclusive production of J ψ (3.1) and ϒ (9.4) mesons in e + e − interactions at 29 GeV, via their decay into two leptons. No signal is observed in the J ψ region, nor in the ϒ region. The limits on the cross sections are σ ( e + e − → ψX ) < 4.4 × 10 −36 cm 2 , and σ ( e + e − → ϒX ) < 4.7 × 10 −36 cm 2 . The same data yield limits on the branching ratios for the b quark BR ( b → ψX ) < 4.9% and BR ( b → ℓ + ℓ − X ) < 0.8%.

2 data tables
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Table 2

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