Measurement of spin-density matrix elements for -meson photoproduction from protons and deuterons near threshold

Chang, W. C.*; Imai, Kenichi; LEPS Collaboration*

At SPring-8 LEPS facility, a measurement of the spin density elements of -meson production has been made with a linearly polarized photon beam at $_{gamma}$ = 1.6-2.4 GeV. The Pomeron exchange processes remain dominant near the threshold. The pseudoscalar exchange process is visible in the -meson production. A small but finite values of the spin-density matrix elements reflecting helicity-nonconserving amplitudes have been observed.

Language	:	English
Journal	:	Physical Review C
Volume	:	82
Number	:	1
Pages	:	p.015205_1 - 015205_11
Publication Year/Month	:	2010/07
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Paper URL	:	https://doi.org/10.1103/PhysRevC.82.015205
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Keywords	:	no keyword
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Registration No. : AA20101043
JAEA Abstracts No. :
Paper Submission No. : 10805

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