Three-particle systems with resonant subprocesses in a finite volume
In previous work, we have developed a relativistic, model-independent three-particle quantization condition, but only under the assumption that no poles are present in the two-particle K matrices that appear as scattering subprocesses. Here we lift this restriction, by deriving the quantization condition for identical scalar particles with a G-parity symmetry, in the case that the two-particle K matrix has a pole in the kinematic regime of interest. As in earlier work, our result involves intermediate infinite-volume quantities with no direct physical interpretation, and we show how these are related to the physical three-to-three scattering amplitude by integral equations. This work opens the door to study processes such as a2→ρπ→πππ, in which the ρ is rigorously treated as a resonance state.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Univ. of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- SC0011637; AC05-06OR23177
- OSTI ID:
- 1492914
- Alternate ID(s):
- OSTI ID: 1493163; OSTI ID: 1595123
- Report Number(s):
- JLAB-THY-18-2819; DOE/OR/-23177-4553; arXiv:1810.01429; CERN-TH-2018-216; PRVDAQ; 014516
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Vol. 99 Journal Issue: 1; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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