Polarization observables in pion photoproduction on light nuclei

Conference · Fri Jul 01 04:00:00 EDT 1994

OSTI ID:10169329

Tiator, L ^[1]; Kamalov, S S ^[2]; Bennhold, C ^[3]

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1. Universitaet Mainz (Germany). Institut fuer Kernphysik
2. Laboratory of Theoretical Physics, Dubna (Russian Federation)
3. George Washington Univ., Washington, DC (United States)

Single polarization observables {Sigma}, P, and T are investigated for the nucleon (p, n) and the trinucleon ({sup 3}He, {sup 3}H). The threshold E{sub 0+} and the resonance M{sub 1+} and E{sub 1+} multipoles are particularly studied. For the reaction {sup 3}He({gamma}, {pi}{sup +}){sup 3}H a recently developed nonlocal coupled-channel approach is presented that employs three-body Faddeev amplitudes and incorporates two-step processes such as {sup 3}He({gamma}, {pi}{sup o}){sup 3}He({pi}{sup o}, {pi}{sup +}){sup 3}H. Enhancement effects of the contributions from small components of the {sup 3}He wave function as well as from the {Delta} resonance E2 transition to the polarization observables have been found.

• Research Organization: George Washington Univ., Washington, DC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); Deutsche Forschungsgemeinschaft, Bonn (Germany)
• DOE Contract Number: FG05-86ER40270
• OSTI ID: 10169329
• Report Number(s): DOE/ER/40270--53; CONF-9305241--5; ON: DE94015488; IN: MKPH-T--93-11
• Country of Publication: United States
• Language: English

Related Subjects

663410
663510
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
A = 1-5
HELIUM 3 TARGET
NEUTRONS
PHOTONUCLEAR REACTIONS
PHOTONUCLEAR REACTIONS AND PHOTON SCATTERING
PHOTOPRODUCTION
PIONS
POLARIZATION
PROTONS
TRITIUM