dorsal/arxiv
View SchemaClues to the nature of the Delta^*(1700) resonance from pion- and photon-induced reactions
| Authors | M. Doring, E. Oset, D. Strottman |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0602055 |
| URL | https://arxiv.org/abs/nucl-th/0602055 |
| DOI | 10.1016/j.physletb.2006.06.022 |
| Journal | Phys.Lett. B639 (2006) 59-67 |
Abstract
We make a study of the (pi^- p --> K^0 pi^0 Lambda), (pi^+ p --> K^+ pi^+ Lambda), (K^+\bar{K}^0 p), (K^+ pi^+ Sigma^0), (K^+ pi^0 Sigma^+), and (eta pi^+ p) reactions, in which the basic dynamics is given by the excitation of the Delta^*(1700) resonance which subsequently decays into (K Sigma^*(1385)) or (Delta(1232) eta). In a similar way we also study the (gamma p --> K^0 pi^+ Lambda), (K^+ pi^- Sigma^+), (K^+ pi^+ Sigma^-), (K^0 pi^0 Sigma^+), and (eta pi^0 p) related reactions. The cross sections are proportional to the square of the coupling of Delta^*(1700) to (Sigma^*K), (Delta eta) for which there is no experimental information but which is provided in the context of coupled channels chiral unitary theory where the Delta^*(1700) is dynamically generated. Within present theoretical and experimental uncertainties one can claim a global qualitative agreement between theory and experiment. We provide a list of items which need to be improved in order to make further progress along these lines.
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"abstract": "We make a study of the (pi^- p --\u003e K^0 pi^0 Lambda), (pi^+ p --\u003e K^+ pi^+\nLambda), (K^+\\bar{K}^0 p), (K^+ pi^+ Sigma^0), (K^+ pi^0 Sigma^+), and (eta\npi^+ p) reactions, in which the basic dynamics is given by the excitation of\nthe Delta^*(1700) resonance which subsequently decays into (K Sigma^*(1385)) or\n(Delta(1232) eta). In a similar way we also study the (gamma p --\u003e K^0 pi^+\nLambda), (K^+ pi^- Sigma^+), (K^+ pi^+ Sigma^-), (K^0 pi^0 Sigma^+), and (eta\npi^0 p) related reactions. The cross sections are proportional to the square of\nthe coupling of Delta^*(1700) to (Sigma^*K), (Delta eta) for which there is no\nexperimental information but which is provided in the context of coupled\nchannels chiral unitary theory where the Delta^*(1700) is dynamically\ngenerated. Within present theoretical and experimental uncertainties one can\nclaim a global qualitative agreement between theory and experiment. We provide\na list of items which need to be improved in order to make further progress\nalong these lines.",
"arxiv_id": "nucl-th/0602055",
"authors": [
"M. Doring",
"E. Oset",
"D. Strottman"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.physletb.2006.06.022",
"journal_ref": "Phys.Lett. B639 (2006) 59-67",
"title": "Clues to the nature of the Delta^*(1700) resonance from pion- and photon-induced reactions",
"url": "https://arxiv.org/abs/nucl-th/0602055"
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