Hypernuclear and [Lambda]-spin polarizations produced in the ([pi][sup +],[ital K][sup +]) reaction

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.1045· OSTI ID:5192302

Itonaga, K ^[1]; Motoba, T ^[2]; Richter, O; Sotona, M ^[3]

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1. Laboratory of Physics, Miyazaki Medical College, Kiyotake, Miyazaki 889-16 (Japan)
2. Laboratory of Physics, Osaka Electro-Communication University, Neyagawa, Osaka 572 (Japan)
3. Nuclear Physics Insittute, Czech Academy of Sciences, 250 68 Rez/Prague, Czech Republic ( )

Starting with the elementary amplitudes having spin-flip and spin-nonflip interactions for [pi][sup +][ital n][r arrow][Lambda][ital K][sup +], hypernuclear production cross sections and polarizations have been estimated in detail for the ([pi][sup +],[ital K][sup +]) reaction on available [ital p]-shell nuclear targets ([sup 10,11]B, [sup 12,13]C, [sup 14]N, [sup 16]O). The experimental excitation spectra of [sup 1][sub [Lambda]][sup 2]C, [sup 1][sub [Lambda]][sup 3]C, and [sup 1][sub [Lambda]][sup 6]O, including the typical cross section data, are satisfactorily reproduced in the distorted wave impulse approximation with the configuration-mixed wave functions. The angular dependence of hypernuclear polarization is predicted for each typical state, showing, for example, that the use of the mixed wave functions changes appreciably the previous estimate with the simple one-particle--one-hole wave function for [sub [Lambda]][sup 12]C. The [Lambda]-spin polarization in nuclear medium is also estimated. Typical states are shown to have large polarizations at the hypernuclear production stage.

• OSTI ID: 5192302
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRONS
HYPERNUCLEI
HYPERONS
IMPULSE APPROXIMATION
KAONS
KAONS PLUS
LAMBDA BARYONS
MESON REACTIONS
MESONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
PION REACTIONS
PIONS
PIONS PLUS
POLARIZATION
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES