Hyperon III: $$$$K^{-}p - \pi \varSigma $$$$ coupled-channel dynamics in the $$$$\varLambda (1405)$$$$ mass region
Abstract
Abstract Low-energy data on the three charge states in $$$$\gamma p \rightarrow K^+(\varSigma \pi )$$$$ from CLAS at JLab, on $$$$K^-p\rightarrow \pi ^0\pi ^0\varLambda $$$$ and $$$$\pi ^0\pi ^0\varSigma $$$$ from the Crystal Ball at BNL, bubble chamber data on $$$$K^-p\rightarrow \pi ^-\pi ^+\pi ^{\pm }\varSigma ^{\mp }$$$$ , low-energy total cross sections on $$K^-$$ induced reactions, and data on the $$K^-p$$ atom are fitted with the BnGa partial-wave-analysis program. We find that the data can be fitted well with just one isoscalar spin-1/2 negative-parity pole, the $$$$\varLambda (1405)$$$$ , and background contributions. In a fit with one isocsalar state, the $$$$\varLambda (1405)$$$$ structure can be determined as a dominantly SU(3) singlet state. A fit with two isoscalar singlet states, with imposed properties of the low-mass state, is, however, also not incompatible with data.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1783419
- Alternate Identifier(s):
- OSTI ID: 1646614
- Report Number(s):
- JLAB-PHY-20-3218; DOE/OR-23177-5019
Journal ID: ISSN 1434-6001; 139; PII: 142
- Grant/Contract Number:
- AC05-06OR23177; FG02-87ER40315; RSF 16-12-10267; SFB/TR110
- Resource Type:
- Published Article
- Journal Name:
- European Physical Journal. A
- Additional Journal Information:
- Journal Name: European Physical Journal. A Journal Volume: 56 Journal Issue: 5; Journal ID: ISSN 1434-6001
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Anisovich, A. V., Sarantsev, A. V., Nikonov, V. A., Burkert, V., Schumacher, R. A., Thoma, U., and Klempt, E. Hyperon III: $$K^{-}p - \pi \varSigma $$ coupled-channel dynamics in the $$\varLambda (1405)$$ mass region. Germany: N. p., 2020.
Web. doi:10.1140/epja/s10050-020-00142-8.
Anisovich, A. V., Sarantsev, A. V., Nikonov, V. A., Burkert, V., Schumacher, R. A., Thoma, U., & Klempt, E. Hyperon III: $$K^{-}p - \pi \varSigma $$ coupled-channel dynamics in the $$\varLambda (1405)$$ mass region. Germany. https://doi.org/10.1140/epja/s10050-020-00142-8
Anisovich, A. V., Sarantsev, A. V., Nikonov, V. A., Burkert, V., Schumacher, R. A., Thoma, U., and Klempt, E. Tue .
"Hyperon III: $$K^{-}p - \pi \varSigma $$ coupled-channel dynamics in the $$\varLambda (1405)$$ mass region". Germany. https://doi.org/10.1140/epja/s10050-020-00142-8.
@article{osti_1783419,
title = {Hyperon III: $$K^{-}p - \pi \varSigma $$ coupled-channel dynamics in the $$\varLambda (1405)$$ mass region},
author = {Anisovich, A. V. and Sarantsev, A. V. and Nikonov, V. A. and Burkert, V. and Schumacher, R. A. and Thoma, U. and Klempt, E.},
abstractNote = {Abstract Low-energy data on the three charge states in $$\gamma p \rightarrow K^+(\varSigma \pi )$$ γ p → K + ( Σ π ) from CLAS at JLab, on $$K^-p\rightarrow \pi ^0\pi ^0\varLambda $$ K - p → π 0 π 0 Λ and $$\pi ^0\pi ^0\varSigma $$ π 0 π 0 Σ from the Crystal Ball at BNL, bubble chamber data on $$K^-p\rightarrow \pi ^-\pi ^+\pi ^{\pm }\varSigma ^{\mp }$$ K - p → π - π + π ± Σ ∓ , low-energy total cross sections on $$K^-$$ K - induced reactions, and data on the $$K^-p$$ K - p atom are fitted with the BnGa partial-wave-analysis program. We find that the data can be fitted well with just one isoscalar spin-1/2 negative-parity pole, the $$\varLambda (1405)$$ Λ ( 1405 ) , and background contributions. In a fit with one isocsalar state, the $$\varLambda (1405)$$ Λ ( 1405 ) structure can be determined as a dominantly SU(3) singlet state. A fit with two isoscalar singlet states, with imposed properties of the low-mass state, is, however, also not incompatible with data.},
doi = {10.1140/epja/s10050-020-00142-8},
journal = {European Physical Journal. A},
number = 5,
volume = 56,
place = {Germany},
year = {Tue May 19 00:00:00 EDT 2020},
month = {Tue May 19 00:00:00 EDT 2020}
}
https://doi.org/10.1140/epja/s10050-020-00142-8
Web of Science
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