Lightest flavor-singlet qqq baryons as witnesses to color
We present a new computation in a field-theoretical model of Coulomb-gauge QCD of the first radial and angular excitations of a qqq system in an SU(3) flavor-singlet state, ΛS. The traditional motivation for the study is that the absence of flavor singlets in the lowest-lying spectrum is a direct co...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
22 December 2020
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| In: |
Physical review
Year: 2020, Volume: 102, Issue: 11, Pages: 1-19 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.102.114032 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.102.114032 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.102.114032 
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| Author Notes: | Jonathan Estévez and Felipe J. Llanes-Estrada (Universidad Complutense de Madrid, Departamento de Física Teórica and IPARCOS); Víctor Martínez-Fernández (National Centre for Nuclear Research (NCBJ)); Álvaro Pastor-Gutiérrez (Institut für Theoretische Physik, Universität Heidelberg) |
| Summary: | We present a new computation in a field-theoretical model of Coulomb-gauge QCD of the first radial and angular excitations of a qqq system in an SU(3) flavor-singlet state, ΛS. The traditional motivation for the study is that the absence of flavor singlets in the lowest-lying spectrum is a direct consequence of the color degree of freedom. [The calculation is tested with decuplet baryons Δ(1232) and Ω(1672).] We also analyze decay branching fractions of the flavor-singlet baryon for various masses with the simplest effective Lagrangians. |
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| Item Description: | Gesehen am 08.02.2022 |
| Physical Description: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.102.114032 |