Meson spectroscopy with unitary coupled-channels model for heavy-meson decay into three mesons
Jun, 20126 pages
Published in:
- PoS QNP2012 (2012) 081
Contribution to:
e-Print:
- 1206.5310 [hep-ph]
DOI:
Report number:
- JLAB-THY-12-1592
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Abstract: (arXiv)
We develop a model for describing excited mesons decay into three mesons. The properties of the excited mesons can be extracted with this model. The model maintains the three-body unitarity that has been missed in previous data analyses based on the conventional isobar models. We study an importance of the three-body unitarity in extracting hadron properties from data. For this purpose, we use the unitary and isobar models to analyze the same pseudo data of gamma p -> pi+pi+pi-n, and extract the properties of excited mesons. We find a significant difference between the unitary and isobar models in the extracted properties of excited mesons, such as the mass, width and coupling strength to decay channels.Note:
- 6 pages, 8 figures, Contribution to the Sixth International Conference on Quarks and Nuclear Physics (QNP2012), April 16-20, 2012, Ecole Polytechnique, Palaiseau, France
- meson: decay
- meson: hadron spectroscopy
- coupled channel: unitarity
- model: coupled channel
- isobar model
- coupling constant
- nuclear physics
- quark
- pi n
References(7)
Figures(9)
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