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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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Hauptverfasser: Estévez, Jonathan (VerfasserIn) , Llanes-Estrada, Felipe J. (VerfasserIn) , Martínez-Fernández, Víctor (VerfasserIn) , Pastor-Gutiérrez, Álvaro (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 22 December 2020
In: Physical review
Year: 2020, Jahrgang: 102, Heft: 11, Pages: 1-19
ISSN:2470-0029
DOI:10.1103/PhysRevD.102.114032
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.102.114032
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.102.114032
Volltext
Verfasserangaben: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)
Beschreibung
Zusammenfassung: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.
Beschreibung:Gesehen am 08.02.2022
Beschreibung:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.102.114032

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