Quark and diquark fragmentation into strange particles in. pi. /sup -/p interactions at p = 40 GeV/c

Journal Article · Fri Mar 01 04:00:00 EST 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5222008

Grishin, V G; Didenko, L A; Karnaukhov, V M; Koka, K; Kuznetsov, A A; Metreveli, S V

Quark and diquark fragmentation into neutral kaons and ..lambda.. hyperons in soft hadron-hadron interactions is studied. The fragmentation functions (1/..beta..)(dsigma/dx/sub E/) are analyzed. The results are compared to the analogous data on e/sup +/e/sup -/ interactions. It is shown that in hadron-hadron collisions, in diquark fragmentation processes the function (1/..beta..)(dsigma/dx/sub E/) displays scaling behavior for netural kaons and ..lambda.. hyperons in the momentum range 16--405 GeV/c within the experimental error. The x/sub E/ dependence of the functions describing the fragmentation of quarks and diquarks into neutral kaons and ..lambda.. hyperons in soft ..pi../sup -/p and pp collisions has the same behavior as that in e/sup +/e/sup -/ annihilation. The coefficients describing the suppression of strange s(s-bar) quark (lambda/sub s/) pickup and diquark (lambda/sub q/q) pickup from the sea are found to be lambda/sub s/approx. =0.17 and lambda/sub q/q = 0.14 +- 0.03. The results obtained indicate that quark and diquark fragmentation into strange particles in soft hadron-hadron collisions and in e/sup +/e/sup -/ interactions is universal.

• Research Organization: Joint Institute for Nuclear Research
• OSTI ID: 5222008
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 41:3; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
COMPOSITE MODELS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INTERACTIONS
KAONS
KAONS NEUTRAL
LAMBDA PARTICLES
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARK MODEL
QUARKS
SCALING LAWS
STRANGE PARTICLES