Measurement of the Induced Polarization of {Lambda}(1116) in Kaon Electroproduction with CLAS

Journal Article · Thu Aug 05 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3483414· OSTI ID:21426477

Gabrielyan, Marianna; Raue, Brian; Dhamija, Seema ^[1]; Carman, Daniel S ^[2]

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1. Florida International University, Miami, FL 33199 (United States)
2. Jefferson Laboratory, Newport News, VA 23606 (United States)

The CLAS Collaboration is using the p(e, e'K{sup +}p){pi}{sup -} reaction to measure the induced polarization of the electroproduced {Lambda}(1116). In this experiment a 5.499-GeV electron beam was incident upon an unpolarized liquid-hydrogen target. The CEBAF Large Acceptance Spectrometer (CLAS) was used to detect the scattered electron, the kaon, and the decay proton from the {Lambda} hyperon. CLAS allowed for a large kinematic acceptance in Q{sup 2}(0.75{<=}Q{sup 2{<=}}3.5 GeV{sup 2}) and W(1.6{<=}W{<=}3.0 GeV), as well as the kaon center-of-mass scattering angle. The goal is to map out the kinematic dependencies for the induced polarization in order to provide new constraints on models of K-hyperon production. Along with previously published photo- and electroproduction cross sections and polarization observables from CLAS, LEPS, SAPHIR, and GRAAL, these new induced polarization data are needed in coupled-channel analyses to search for previously unobserved s-channel resonances. Preliminary polarization results are presented.

• OSTI ID: 21426477
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1257; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYONS
BASIC INTERACTIONS
BOSONS
CEBAF ACCELERATOR
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON REACTIONS
ELECTRONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FOUR MOMENTUM TRANSFER
GEV RANGE
HADRONS
HYDROGEN 1 TARGET
HYPERONS
INTERACTIONS
KAONS
LAMBDA BARYONS
LEPTON REACTIONS
LEPTONS
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MESONS
MOMENTUM TRANSFER
MULTIPARTICLE SPECTROMETERS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS MINUS
POLARIZATION
PROTONS
PSEUDOSCALAR MESONS
S CHANNEL
SPECTROMETERS
STRANGE MESONS
STRANGE PARTICLES
TARGETS