TL;DR
This paper reviews recent evidence for a narrow nucleon excitation near 1680 MeV, highlighting its strong photocoupling to neutrons and potential as an anti-decuplet member.
Contribution
It provides a concise discussion of experimental evidence supporting the existence and properties of a narrow nucleon resonance around 1680 MeV.
Findings
Strong photocoupling to the neutron
Candidate for anti-decuplet member
Supports existence of narrow N* resonance
Abstract
We briefly discuss the most recent evidences for narrow nucleon excitation with mass around 1680 MeV. The data show that the N* should have much stronger photocoupling to the neutron than to the proton. That makes it a good candidate for the anti-decuplet member.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Nuclear physics research studies · Particle physics theoretical and experimental studies