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Journal Article

The lightest flavor--singlet qqq baryons as witnesses to color

MPS-Authors
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Pastor-Gutiérrez,  A.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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2009.11020.pdf
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Citation

Estévez, J., Llanes-Estrada, F. J., Martínez-Fernández, V., & Pastor-Gutiérrez, A. (2020). The lightest flavor--singlet qqq baryons as witnesses to color. Physical Review D, 102: 114032. doi:10.1103/PhysRevD.102.114032.


Cite as: https://hdl.handle.net/21.11116/0000-0009-E0BB-7
Abstract
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 a SU(3)
flavor singlet state, Lambda_S. 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 Delta(1232) and Omega(1672).) We also analyze decay branching
fractions of the flavor singlet baryon for various masses with the simplest
effective Lagrangians.