HEPData Search

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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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GENERAL FEATURES AND CLUSTER - LIKE PROPERTIES OF REACTION K+ p ---> K+ p 2 pi+ 2 pi- AT 32-GeV/c

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Chliapnikov, P.V. ; et al.

Sov.J.Nucl.Phys. 34 (1981) 584, 1981.

Inspire Record 165495 DOI 10.17182/hepdata.10705

None

58 data tables

Table 1

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Difference of nonannihilation anti-p p interactions at 22.4-GeV/c from p p interactions at close energy

Batyunya, B.V. ;

JINR-1-89-28, 1989.

Inspire Record 292242 DOI 10.17182/hepdata.54979

The longitudinal and transverse momentum distributions of protons and π±-mesons, produced and pp interactions at close energy (22-24 GeV), are compared. The existence of a difference between these (P<1.2 GeV/c in laboratory system) and for mesons accompaying them, is shown. The observed difference increases with increasing the multiplicity of charged particles. For π+ mesons it increases with decreasing the momentum of accompaying protons. These effects do not practically exist for π- mesons

34 data tables

Table 1

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Inclusive Resonance Production in $K^+ p$ Interactions at 70-{GeV}/$c$

The Brussels-Genoa-Mons-Nijmegen-Serpukhov-CERN collaboration Barth, M. ; De Clercq, C. ; De Wolf, E.A. ; et al.

Nucl.Phys.B 223 (1983) 296, 1983.

Inspire Record 183148 DOI 10.17182/hepdata.33962

None

20 data tables

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Study of D*+ production in nu/mu charged current interactions in the NOMAD experiment.

The NOMAD collaboration Astier, P. ; Autiero, D. ; Baldisseri, A. ; et al.

Phys.Lett.B 526 (2002) 278-286, 2002.

Inspire Record 567771 DOI 10.17182/hepdata.49701

A search was made among ν μ charged current events collected in the NOMAD experiment for the reaction: ν μ +N→μ − +D ★+ + hadrons ↪ D 0 +π + ↪ K − +π + . A high purity D ★+ sample composed of 35 events was extracted. The D ★+ yield in ν μ charged current interactions was measured to be T =(0.79±0.17(stat.)±0.10(syst.))%. The mean fraction of the hadronic jet energy taken by the D ★+ is 0.67±0.02(stat.)±0.02(syst.). The distributions of the fragmentation variables z, P T 2 and x F for D ★+ are also presented.

5 data tables

Table 1

Distribution in Feynman X.

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Distribution in transverse momentum.

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Distribution in fractional energy Z.

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A Study of b quark fragmentation into B0 and B+ mesons at LEP

The OPAL collaboration Alexander, G. ; Allison, J. ; Altekamp, N. ; et al.

Phys.Lett.B 364 (1995) 93-106, 1995.

Inspire Record 400812 DOI 10.17182/hepdata.48093

A study of b quark fragmentation at LEP is presented using a sample of semileptonic B decays containing a fully reconstructed charm meson. The data are compared to several theoretical models for heavy quark fragmentation; the free parameters in these models are fitted and the sensitivity of the model parameters to the rate of P-wave B meson production is studied. The mean scaled energy fraction of B 0 and B + mesons has been determined to be < x E > = 0.695 ± 0.006 ± 0.003 ± 0.007, where the errors are statistical, systematic and model dependence respectively. This result is consistent with previous, less direct measurements from inclusive leptonic B decays. Also presented is a model independent fit to the shape of the energy distribution of weakly decaying B mesons at LEP.

1 data table

Table 1

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rivet Analysis
B* production in Z decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adye, T. ; et al.

Z.Phys.C 68 (1995) 353-362, 1995.

Inspire Record 395026 DOI 10.17182/hepdata.52359

None

2 data tables

Table 1

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Inclusive Characteristics of $\pi^-$ Mesons Produced in $p$ C and $p$ Ta Interactions at 10-{GeV}/$c$ Proton Momentum

Armutliisky, D.D. ; Akhababian, N.O. ; Grishin, V.G. ; et al.

Sov.J.Nucl.Phys. 48 (1988) 101-107, 1988.

Inspire Record 251090 DOI 10.17182/hepdata.9502

None

8 data tables

Table 1

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MOMENTUM SPECTRA IN THE WINDOW P=0.1-6.0 HAVE BEEN FITTED BY THE FORMULA: (1/N)*D(N)/D(P)=CONST(Q=1)*EXP(-SLOPE(Q=1)*P)+CONST(Q=2)*EXP (-SLOPE(Q=2)*P).