This title appears in the Scientific Report :
2018
Please use the identifier:
http://hdl.handle.net/2128/21239 in citations.
Please use the identifier: http://dx.doi.org/10.1140/epjc/s10052-018-6475-8 in citations.
Interactions between vector mesons and dynamically generated resonances
Interactions between vector mesons and dynamically generated resonances
The ρρ interaction and the corresponding dynamically generated bound states are revisited. We demonstrate that an improved unitarization method is necessary to study the pole structures of amplitudes outside the near-threshold region. In this work, we extend the study of the covariant ρρ scattering...
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Personal Name(s): | Du, Meng-Lin (Corresponding author) |
---|---|
Gülmez, Dilege / Guo, Feng-Kun / Meißner, Ulf-G. / Wang, Qian | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 Theorie der starken Wechselwirkung; IKP-3 |
Published in: | The European physical journal / C Particles and fields C, 78 (2018) 12, S. 988 |
Imprint: |
Heidelberg
Springer72609
2018
|
DOI: |
10.1140/epjc/s10052-018-6475-8 |
Document Type: |
Journal Article |
Research Program: |
TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1140/epjc/s10052-018-6475-8 in citations.
The ρρ interaction and the corresponding dynamically generated bound states are revisited. We demonstrate that an improved unitarization method is necessary to study the pole structures of amplitudes outside the near-threshold region. In this work, we extend the study of the covariant ρρ scattering in a unitarized chiral theory to the S-wave interactions for the whole vector-meson nonet. We demonstrate that there are unphysical left-hand cuts in the on-shell factorization approach of the Bethe–Salpeter equation. This is in conflict with the correct analytic behavior and makes the so-obtained poles, corresponding to possible bound states or resonances, unreliable. To avoid this difficulty, we employ the first iterated solution of the N / D method and investigate the possible dynamically generated resonances from vector-vector interactions. A comparison with the results from the nonrelativistic calculation is provided as well. |