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

Journal Article · Thu Aug 05 00:00:00 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, Vol. 1257, Issue 1; Conference: HADRON 2009: 13. international conference on hadron spectroscopy, Tallahassee, FL (United States), 29 Nov - 4 Dec 2009; Other Information: DOI: 10.1063/1.3483414; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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