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Polarization phenomena in the reaction p+alpha -> p+pi(0)+alpha
Date
2001-05-01
Author
Rekalo, MP
Tomasi-Gustafsson, E
Metadata
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We present a general analysis of polarization phenomena for three-body processes tin noncoplanar kinematics), in terms of a P- and T-odd acoplanarity parameter. The spin structure of the matrix element and the polarization phenomena contain new contributions, with respect to binary processes, which can be conveniently expressed as functions of this parameter. We apply this formalism to the reaction p+alpha-->p+pi (o) + alpha, in view of characterizing the different mechanisms involved and studying the, excitation of the Roper resonance. We find that the polarization transfer coefficient D-nn, where (n) over right arrow is normal to the proton scattering plane, is especially sensitive to the spin of the exchanged particle.
Subject Keywords
Mondynamıc formalısm
,
Roper excıtatıon
,
Particles
,
Resonance
,
Tests
URI
https://hdl.handle.net/11511/64726
Journal
PHYSICAL REVIEW C
DOI
https://doi.org/10.1103/physrevc.63.054001
Collections
Department of Physics, Article
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BibTeX
M. Rekalo and E. Tomasi-Gustafsson, “Polarization phenomena in the reaction p+alpha -> p+pi(0)+alpha,”
PHYSICAL REVIEW C
, pp. 0–0, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64726.