Possibility of narrow resonances in nucleon-nucleon channels
- Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25 117218 Moscow (Russian Federation) and Department of Nano-, Bio-, Information and Cognitive Technologies Moscow Institute of Physics and Technology, 9 Institutskii per. 141700 Dolgoprudny, Moscow Region (Russian Federation)
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 {sup 3}S{sub 1}, {sup 1}S{sub 0}, and {sup 3}P{sub 0} channels. Electromagnetic interaction can shift primitives from the unitary cut, turning them into narrow resonances. We evaluate this effect on the {sup 1}S{sub 0} proton-proton scattering channel in the framework of the Simonov-Dyson model. We show that electromagnetic interaction turns a primitve with a mass of 2 000 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.
- OSTI ID:
- 21596611
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.015206; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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