dorsal/arxiv
View SchemaAntikaon angular distributions in the reaction ${\gamma}d \to K^-{\Theta}^+p \to K^-K^+np$ near the threshold and the parity of the ${\Theta}^+$ pentaquark
| Authors | E. Ya. Paryev |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0602015 |
| URL | https://arxiv.org/abs/nucl-th/0602015 |
| DOI | 10.1134/S1063778806040168 |
| Journal | Phys.Atom.Nucl.69:721-733,2006 |
Abstract
Within spectator model we study the reaction ${\gamma}d \to K^-{\Theta}^+p \to K^-K^+np$ in the threshold energy region. We present the predictions for the exclusive and inclusive antikaon angular distributions in the laboratory system for this reaction calculated for two possible parity states of the ${\Theta}^+$ resonance at 1.5 and 1.75 GeV beam energies with and without imposing the relevant kinematical cuts on those parts of the sampled phase space where contribution from the main background sources associated with the ${\phi}(1020)$, ${\Lambda}(1520)$ production as well as with the $K^-p$--rescattering in the final state, is expected to be dominant. We show that under chosen kinematics these distributions are sensitive to the ${\Theta}^+$ parity and, therefore, can be used as a filter for the determination of its parity.
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"abstract": "Within spectator model we study the reaction ${\\gamma}d \\to K^-{\\Theta}^+p\n\\to K^-K^+np$ in the threshold energy region. We present the predictions for\nthe exclusive and inclusive antikaon angular distributions in the laboratory\nsystem for this reaction calculated for two possible parity states of the\n${\\Theta}^+$ resonance at 1.5 and 1.75 GeV beam energies with and without\nimposing the relevant kinematical cuts on those parts of the sampled phase\nspace where contribution from the main background sources associated with the\n${\\phi}(1020)$, ${\\Lambda}(1520)$ production as well as with the\n$K^-p$--rescattering in the final state, is expected to be dominant. We show\nthat under chosen kinematics these distributions are sensitive to the\n${\\Theta}^+$ parity and, therefore, can be used as a filter for the\ndetermination of its parity.",
"arxiv_id": "nucl-th/0602015",
"authors": [
"E. Ya. Paryev"
],
"categories": [
"nucl-th"
],
"doi": "10.1134/S1063778806040168",
"journal_ref": "Phys.Atom.Nucl.69:721-733,2006",
"title": "Antikaon angular distributions in the reaction ${\\gamma}d \\to K^-{\\Theta}^+p \\to K^-K^+np$ near the threshold and the parity of the ${\\Theta}^+$ pentaquark",
"url": "https://arxiv.org/abs/nucl-th/0602015"
},
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