Journal
EUROPEAN PHYSICAL JOURNAL A
Volume 47, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1140/epja/i2011-11101-9
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Funding
- Helmholtz Association [VH-NG-222, VH-VI-231]
- DFG [SFB/TR 16, 436 RUS 113/991/0-1]
- EU
- RFFI [RFFI-09-02-91342-NNIOa, RFFI-09-02-00629a]
- State Corporation of the Russian Federation Rosatom
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We investigate the interplay of quark and meson degrees of freedom in a physical state representing a near-threshold resonance for the case of multiple continuum channels. The aim is to demonstrate the full complexity of possible near-threshold phenomena. It turns out that those are especially rich, if both quark and meson dynamics generate simultaneously weakly coupled near-threshold poles in the S-matrix. We study the properties of this scenario in detail, such as t-matrix and production amplitude zeros, as well as various effects of the continuum channels interplay.
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