학술논문
Helicity Components of the Cross Section for Double Charged-Pion Production by Real Photons on Protons.
Document Type
Article
Author
Source
Subject
*PION beams
*PHOTONS
*PARTICLES (Nuclear physics)
*
*
Language
ISSN
1063-7788
Abstract
The helicity components σ[sub ½] and σ[sub 3/2] of the cross section for double charged-pion production by real photons on a nucleon are calculated within a phenomenological approach developed previously. A high sensitivity of the σ[sub ½]-σ[sub 3/2] asymmetry to the contribution of nucleon resonances having strongly different electromagnetic helicity amplitudes A[sub ½] and A[sub 3/2] is demonstrated. This feature is of importance for seeking "missing" baryon states. [ABSTRACT FROM AUTHOR]