Polarized Proton Pionic Capture in Deuterium as a Probe of 3N Dynamics

Details Polarized Proton Pionic Capture in Deuterium as a Probe of 3N Dynamics Polarized Proton Pionic Capture in Deuterium as a Probe of 3N Dynamics

2004-11-08

arxiv.org/abs/nucl-th/0411030v1

Phys.Rev. C71 (2005) 041001

Physics

Nuclear Physics

Nuclear Theory

9 pages, 5 figures

Scientific paper

10.1103/PhysRevC.71.041001

The proton analyzing power Ay in pion production reaction pd --> pi0 3He has been calculated including one- and two-body meson production mechanisms with a proper treatment of the three-nucleon dynamics and an accurate solution of the 3N bound-state problem for phenomenological two-nucleon potentials. In the region around the Delta resonance, the structure of the analyzing power can be understood once interference effects among amplitudes describing intermediate Delta N formation in different orbital states are considered along with the additional interference with the S-wave pion production amplitudes. Then, the inclusion of three-nucleon dynamics in the initial state produces the structure of the analyzing power that has been observed experimentally.

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