File:PhysRevC.100.015208.pdf
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Hyperon resonances coupled to pseudoscalar- and vector-baryon channels
Summary[edit]
| Description |
English: We study hyperon resonances by solving coupled channel scattering equations. The coupled systems include pseudoscalar- and vector-baryon channels. The parameters of the model are restricted by making a χ2-fit to the cross-section data on processes: K−p→K−p, K−p→¯¯¯¯K0n, K−p→ηΛ, K−p→π0Λ, K−p→π0Σ0, K−p→π±Σ∓. Data on the energy-level shift and width of the 1s state of the kaonic hydrogen, as well as some cross-section ratios near the threshold are also considered in the fit. Two types of fit are found as a result. In both cases, the properties of Λ(1405) are well reproduced. In addition to this, a Σ state is also found with mass around 1400 MeV. Cross sections, obtained with one of the two fits, are found to stay close to the data at energies away from the thresholds too, and as a result resonances with higher masses have also been studied. |
| Date | |
| Source |
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.100.015208 https://doi.org/10.1103/PhysRevC.100.015208 |
| Author | K. P. Khemchandani, A. Martínez Torres, and J. A. Oller |
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| current | 15:14, 6 August 2019 |  | 1,227 × 1,650, 16 pages (2.3 MB) | Pamputt (talk | contribs) | User created page with UploadWizard |
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