Possibility of narrow resonances in nucleon-nucleon channels

TL;DR

This paper explores how electromagnetic interactions can transform primitives in nucleon-nucleon channels into narrow resonances, specifically demonstrating this effect in the 1S0 proton-proton channel using the Simonov-Dyson model.

Contribution

It provides a theoretical analysis showing electromagnetic effects can create narrow dibaryon resonances from primitives in nucleon-nucleon scattering.

Findings

Electromagnetic interaction shifts a primitive at 2000 MeV into a narrow resonance with 260 keV width.

Narrow resonances may occur in other nucleon-nucleon channels.

Confirmation of these resonances would impact nucleon-nucleon interaction theories.

Abstract

Compound states manifest themselves as bound states, resonances, or primitives, and their character is determined by their interaction with the continuum. If the interaction experiences a perturbation, a compound state can change its manifestation. Phase analysis of nucleon-nucleon scattering indicates the existence of primitives in the 3S1, 1S0, and 3P0 channels. Electromagnetic interaction can shift primitives from the unitary cut, turning them into narrow resonances. We evaluate this effect on the 1S0 proton-proton scattering channel within the framework of the Simonov-Dyson model. We show that electromagnetic interaction turns a primitve with a mass of 2000 MeV into a dibaryon resonance of approximately the same mass and a width of 260 keV. Narrow resonances of a similar nature may occur in other nucleon-nucleon channels. Experimental confirmation of the existence of narrow resonances would have important implications for the theory of nucleon-nucleon interaction.