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Title: Neutral strange particle production in high energy charged current neutrino deuterium interactions

Abstract

In an exposure of the Fermilab 15-foot deuterium filled bubble chamber to a single horn focused wide band neutrino beam with energies between 10 and 250 GeV, 311 K/sub s/, 219 lambda and 7 Anti lambda are observed. These correspond to K/sup 0/anti(K/sup 0/), lambda(..sigma../sup 0/) and anti lambda production rates per charged current interaction of 0.170 +/- 0.010, 0.060 +/- 0.004, and 0.002 +/- 0.001, respectively, in 18.9 +/- 0.09% V/sup 0/ events of total charged current events. The inclusive lambda rate in nun interactions is significantly higher than that in nup interactions. The multiplicity of K/sup 0/ increases (or decreases) with increasing E/sub nu/, W, and Q/sup 2/ (or x/sub BETA), while that of lambda shows no significant variations. From a detailed study of lambda, lambda K/sup 0/), lambda K/sup *//sup +0/ systems, the production rate of lambda from the charm quark decay is found to be (2.1 +/- 1.0)% of the total charged current, which leads to a small cross section for charmed baryon quasielastic production < 5 X 10/sup -40/ cm/sup 2/ (90% CL) and a small semileptonic branching ratio of lambda/sub c/ + decay, B(lambda/sub c/ + ..-->.. e + lambda x <6%(95%CL). The lambdamore » ..pi../sup +/, K/sup 0/p, lambda ..pi../sup +/..pi../sup +/..pi../sup -/, and antiK/sup 0/p..pi../sup +/..pi../sup -/ decay modes of lambda/sub c//sup +/ are studied and found consistent with our previous results. The gross probability that an (ss) pair is produced in lambda S = 0 neutrino reactions is estimated to be 0.19 +/- 0.06, which agrees well with that in hadronic experiments. The inclusive x/sub F/ and p/sub T/sup 2// distributions and their average values are very similar to those in hadronic experiments, which suggest that the majority of neutral strange particles are produced in neutrino reactions via the associated production mechanism.« less

Authors:
Publication Date:
Research Org.:
Maryland Univ., College Park (USA)
OSTI Identifier:
5072498
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; KAONS NEUTRAL SHORT-LIVED; PARTICLE PRODUCTION; LAMBDA-2250 RESONANCES; NEUTRINO-DEUTERON INTERACTIONS; CHARGED-CURRENT INTERACTIONS; NEUTRINO REACTIONS; BRANCHING RATIO; CROSS SECTIONS; DEUTERIUM TARGET; EXPERIMENTAL DATA; FERMILAB ACCELERATOR; GEV RANGE 10-100; GEV RANGE 100-1000; MULTIPLICITY; PARTICLE DECAY; STRANGE PARTICLES; ACCELERATORS; BARYON RESONANCES; BARYONS; BOSONS; CHARM PARTICLES; CHARMED BARYON RESONANCES; CYCLIC ACCELERATORS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; KAONS; KAONS NEUTRAL; LEPTON REACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; MESONS; NUCLEAR REACTIONS; NUMERICAL DATA; PARTICLE INTERACTIONS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; SYNCHROTRONS; TARGETS; 645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties

Citation Formats

Son, D. Neutral strange particle production in high energy charged current neutrino deuterium interactions. United States: N. p., 1982. Web.
Son, D. Neutral strange particle production in high energy charged current neutrino deuterium interactions. United States.
Son, D. Fri . "Neutral strange particle production in high energy charged current neutrino deuterium interactions". United States.
@article{osti_5072498,
title = {Neutral strange particle production in high energy charged current neutrino deuterium interactions},
author = {Son, D},
abstractNote = {In an exposure of the Fermilab 15-foot deuterium filled bubble chamber to a single horn focused wide band neutrino beam with energies between 10 and 250 GeV, 311 K/sub s/, 219 lambda and 7 Anti lambda are observed. These correspond to K/sup 0/anti(K/sup 0/), lambda(..sigma../sup 0/) and anti lambda production rates per charged current interaction of 0.170 +/- 0.010, 0.060 +/- 0.004, and 0.002 +/- 0.001, respectively, in 18.9 +/- 0.09% V/sup 0/ events of total charged current events. The inclusive lambda rate in nun interactions is significantly higher than that in nup interactions. The multiplicity of K/sup 0/ increases (or decreases) with increasing E/sub nu/, W, and Q/sup 2/ (or x/sub BETA), while that of lambda shows no significant variations. From a detailed study of lambda, lambda K/sup 0/), lambda K/sup *//sup +0/ systems, the production rate of lambda from the charm quark decay is found to be (2.1 +/- 1.0)% of the total charged current, which leads to a small cross section for charmed baryon quasielastic production < 5 X 10/sup -40/ cm/sup 2/ (90% CL) and a small semileptonic branching ratio of lambda/sub c/ + decay, B(lambda/sub c/ + ..-->.. e + lambda x <6%(95%CL). The lambda ..pi../sup +/, K/sup 0/p, lambda ..pi../sup +/..pi../sup +/..pi../sup -/, and antiK/sup 0/p..pi../sup +/..pi../sup -/ decay modes of lambda/sub c//sup +/ are studied and found consistent with our previous results. The gross probability that an (ss) pair is produced in lambda S = 0 neutrino reactions is estimated to be 0.19 +/- 0.06, which agrees well with that in hadronic experiments. The inclusive x/sub F/ and p/sub T/sup 2// distributions and their average values are very similar to those in hadronic experiments, which suggest that the majority of neutral strange particles are produced in neutrino reactions via the associated production mechanism.},
doi = {},
url = {https://www.osti.gov/biblio/5072498}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Thesis/Dissertation:
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