Hyperon electroproduction in a crossing and duality constrained model

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.1617· OSTI ID:7199222

Williams, R A; Ji, C; Cotanch, S R ^[1]

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1. North Carolina State University, Raleigh, North Carolina 27695 (United States)

Using our previously developed crossing and duality consistent model for kaon photoproduction and radiative capture, we investigate the kaon electroproduction processes {ital p}({ital e},{ital e}{prime}{ital K}{sup +}){ital Y} for {ital Y}={Lambda}, {Sigma}{sup 0}, and {Lambda}(1405). Because there is no electroproduction data near threshold, consistency requires extending the energy range of our photoproduction model parametrization from an upper bound of {ital E}{sub {gamma}}{sup lab}=1.4 to 2.2 GeV. We find that baryon resonances with spin greater than 1/2 are necessary to describe the higher energy photoproduction data (1.4{le}{ital E}{sub {gamma}}{sup lab}{le}2.2 GeV). We also extend our use of duality by representing these higher-spin {ital s}- and {ital u}-channel baryon resonances with the low-lying {ital t}-channel vector, {ital K}{sup *}(890), and pseudovector, {ital K}{sub 1}(1270), mesons. Using this extended crossing and duality consistent model, we obtain reasonable agreement with the data for both photoproduction and electroproduction processes.

• DOE Contract Number: FG05-88ER40461; FG05-90ER40589
• OSTI ID: 7199222
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663420* -- Lepton-Induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BASIC INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELECTRON REACTIONS
ELECTRON-NUCLEON INTERACTIONS
ELECTRON-PROTON INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRONS
HYPERONS
INFORMATION
INTERACTIONS
KAONS
KAONS PLUS
LAMBDA BARYONS
LEPTON REACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MESONS
NUCLEAR REACTIONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROTONS
PSEUDOSCALAR MESONS
SIGMA BARYONS
SIGMA NEUTRAL PARTICLES
SIGMA PARTICLES
STRANGE MESONS
STRANGE PARTICLES
THEORETICAL DATA