Excited Baryons Phenomenology from Large-Nc QCD
Dan Pirjol, Tung-Mow Yan
Abstract
We present a phenomenological analysis of the strong couplings of the negative-parity L=1 baryons from the perspective of the large-Nc expansion. In the large-Nc limit the mass spectrum and mixing pattern of these states are constrained in a very specific way. The mixing angles are completely determined in this limit, with predictions in good agreement with experiment. In the combined large-Nc and SU(3) limits the pion couplings of the five negative-parity octets to the ground state baryons are given in terms of only 3 independent couplings. The large-Nc predictions for the ratios of strong couplings are tested against experimental data.
Create a lesson
Related papers
Comment on "Long-range magnetic fields in the ground state of the Standard Model plasma"
Jingwei Wang, Yiming Liu, Ligong Bian
Semiparametric Estimation of Physics Parameters and Parton Distribution Functions
Huanbiao Zhu, Jaco ter Hoeve, Mikael Kuusela et al.
Observable gravitational waves from unstable ALP catastrogenesis
Graciela B. Gelmini, Jonah Hyman, Yu Watanabe
Revisiting the gamma-ray signal from light ALPs emitted during the evaporation of memory-burdened PBHs
Cheng-Rui Jiang, Tong Li
Holographic spin alignment of vector mesons in a spinning black-hole background
Fei Wang, Zi-qiang Zhang
Modeling a Framework for Comprehensive Analysis of p\!A Transverse Analyzing Power Measurements at the RHIC HJET
Andrei Poblaguev