HEPData Search

The results of a study of strange particle production in charged current $\bar{\nu}_{\mu} N$ interactions in the Fermilab 15 ft bubble chamber filled with a heavy $Ne-H_2$ mixture are presented. Production rates and average multiplicities of $K^0$'s and Λ's as functions of W 2 and Q 2 are given. The experimental data agree well with the quark-parton model predictions if a yield of 0.06 ± 0.02 of $K^0$'s and Λ's from charm production is included. Upper limits for D-meson production are given and the shape of the charmed quark fragmentation function is discussed. Inclusive production of the K ∗ (890) and Σ(1385) resonances is measured and it is shown that only about 5% of the K 0 mesons and Λ hyperons results from resonance decays. Relative production rates of neutral strange particles on proton and neutron targets are studied.

11 data tables

Table 1

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DELTA (1236) PRODUCTION IN ANTI-NEUTRINO n ---> mu+ n pi- REACTION AT HIGH-ENERGIES

Efremenko, V.I. ; Fedotov, A.V. ; Gorichev, P.A. ; et al.

ITEP-83-1981, 1981.

Inspire Record 167553 DOI 10.17182/hepdata.40191

None

5 data tables

Table 1

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SOURCES OF LEADING PIONS IN pi+ p AND pi- p INTERACTIONS AT 16-GeV/c AND 40-GeV/c

Becker, L. ; Grishin, V.G. ; Kvatadze, R.A. ;

Sov.J.Nucl.Phys. 35 (1982) 543, 1982.

Inspire Record 166978 DOI 10.17182/hepdata.39232

None

10 data tables

Table 1

P=4 IS 'LEADING'.

Table 2

P=5 IS 'LEADING'.

Table 3

P=5 IS 'LEADING'.

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Multiplicity Distributions in Anti-muon Neutrino $p$ Interactions

Derrick, M. ; Gregory, P. ; LoPinto, F. ; et al.

Phys.Rev.D 25 (1982) 624, 1982.

Inspire Record 11189 DOI 10.17182/hepdata.23975

We present the multiplicity distributions of the hadrons produced in antineutrinoproton interactions. The data sample, which consists of 2025 charged-current events with antineutrino energy greater than 5 GeV, comes from exposures of the 15-foot hydrogen bubble chamber to the broad-band antineutrino beam at Fermilab. The distribution in hadronic mass W has an average value of 3.7 GeV but extends up to 10 GeV. The mean multiplicity of charged hadrons depends on the hadronic mass W and varies as 〈nch〉=(−0.44±0.13)+(1.48±0.06)lnW2 for W2>4 GeV2. The mean multiplicities for events with three or more charged tracks averaged over the total data sample are 〈n−〉=1.68±0.03 and 〈n0〉=1.11±0.07 for π− and π0 production, respectively. The mean π0 multiplicity is found to increase slowly with n−. The integrated correlation coefficient f2−− and the dispersion D− are given as a function of n−. When compared to the distributions characteristic of other leptonic and hadronic reactions, we find a similarity between the ν¯ data and results from hadronic reactions that have no diffractive component. Multiplicity data for the heavier particles K0, ρ0, and Λ are also summarized. The pion multiplicities in the current fragmentation region exceed those for the target fragmentation at all W values. They also satisfy the isospin relation 2〈n0〉=〈n+〉+〈n−〉 required for the fragmentation of an I=12 quark when a W>4 GeV selection is imposed.

6 data tables

Table 1

No description provided.

Table 2

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Table 3

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