학술논문
Evidence for a narrow N*(1685) resonance in quasifree Compton scattering on the neutron.
Document Type
Article
Author
Source
Subject
*RESONANCE Raman effect
*COMPTON effect
*COLLISIONS (Nuclear physics)
*NEUTRON scattering
*PARTICLES (Nuclear physics)
*NUCLEAR excitation
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Language
ISSN
0556-2813
Abstract
The study of quasifree Compton scattering on the neutron in the energy range of Eγ=0.75-1.5 GeV is presented. The data reveal a narrow peak at W~1.685 GeV. This result, being considered in conjunction with the recent evidence for a narrow structure at W~1.68 GeV in η photoproduction on the neutron, suggests the existence of a nucleon resonance with unusual properties: a mass M~1.685 GeV, a narrow width Γ ⩽30 MeV, and the much stronger photoexcitation on the neutron than on the proton. [ABSTRACT FROM AUTHOR]