Polarization of. Lambda. hyperons produced by the quasifree (. pi. sup + , K sup + ) reaction on sup 12 C

Journal Article · Mon Apr 06 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.2137· OSTI ID:7235153

Ajimura, S; Ejiri, H; Higashi, A; Inoue, G; Iseki, Y; Kishimoto, T; Nakamura, F; Noumi, H; Ohsumi, H; Sano, H; Gill, D R; Lee, L; Olin, A; Yen, S; Fukuda, T; Hashimoto, O; Shibata, T; Nomachi, M; Kimura, Y; Maeda, K ^[1]

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1. Department of Physics, Faculty of Science, Osaka University, Toyonaka, Osaka 560 (Japan) TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada) Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188 (Japan) National Laboratory for High Energy Physics (KEK), Oho, Tsukuba (Japan) Department of Physics, Faculty of Science, Kyushu University, Fukuoka (Japan) College of General Education Tohoku University, Sendai, Miyagi (Japan)

The polarization of quasifree {Lambda} hyperons produced by the ({pi}{sup +}{ital K+}) reaction on {sup 12}C and on the deuteron was measured for the first time. The asymmetry of pions from weak decay of the {Lambda} hyperon was used to determine the polarization. The polarization for the deuterium target was found to be consistent with that for the elementary {ital n}({pi}{sup +},{ital K}{sup +}){Lambda} reaction. The polarization of the {Lambda} produced by the quasifree process from {sup 12}C is consistent with that for the elementary reaction, which demonstrates that the spin characteristics of the elementary reaction are not modified by the nuclear medium.

• OSTI ID: 7235153
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:14; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
BARYONS
BOSONS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
DATA
ELEMENTARY PARTICLES
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
HYPERONS
INELASTIC SCATTERING
INFORMATION
KAONS
KAONS PLUS
LAMBDA BARYONS
MESON REACTIONS
MESONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE IDENTIFICATION
PION MINUS REACTIONS
PION REACTIONS
POLARIZATION
PSEUDOSCALAR MESONS
SCATTERING
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
TARGETS