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Title: Phenomenology of relativistic $$$$\mathbf {3}\rightarrow \mathbf {3}$$$$ reaction amplitudes within the isobar approximation

Journal Article · · European Physical Journal. C, Particles and Fields

Further progress in hadron spectroscopy necessitates the phenomenological description of three particle reactions. We consider the isobar approximation, where the connected part of the $$\mathbf{3}\to\mathbf{3}$$ amplitude is first expressed as a sum over initial and final pairs, and then expanded into a truncated partial wave series. The resulting unitarity equation is automatically fulfilled by the $$B$$-matrix solution, which is an integral equation for the partial wave amplitudes, analogous to the $$K$$-matrix parameterization used to describe $$\mathbf{2}\to\mathbf{2}$$ amplitudes. We study the one particle exchange and how its analytic structure impacts rescattering solutions such as the triangle diagram. The analytic structure is compared to other parameterizations discussed in the literature. We briefly discuss the analogies with recent formalisms for extracting $$\mathbf{3}\to\mathbf{3}$$ scattering amplitudes in lattice QCD.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
Joint Physics Analysis Center
Grant/Contract Number:
AC05-06OR23177; FG02- 87ER40365; IA101717; IA101819; PHY-1415459; 251817; FG02-87ER40365
OSTI ID:
1619890
Alternate ID(s):
OSTI ID: 1574436
Report Number(s):
JLAB-THY-18-2817; DOE/OR/23177-4550; arXiv:1809.10523; 56; PII: 6566
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 79 Journal Issue: 1; ISSN 1434-6044
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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