Work

Flavor S U ( 4 ) breaking between effective couplings

Year: 2012

Type: article

Abstract: Using a framework in which all elements are constrained by Dyson-Schwinger equation studies in QCD, and therefore incorporate a consistent, direct and simultaneous description of light- and heavy-quarks and the states they constitute, we analyze the accuracy of $SU(4)$-flavor symmetry relations between $\ensuremath{\pi}\ensuremath{\rho}\ensuremath{\pi}$, $K\ensuremath{\rho}K$, and $D\ensuremath{\rho}D$ couplings. Such relations are widely used in phenomenological analyses of the interactions between matter and charmed mesons. We find that while $SU(3)$-flavor symmetry is accurate to 20%, $SU(4)$ relations underestimate the $D\ensuremath{\rho}D$ coupling by a factor of 5.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.85.031502

Authors: Bruno El-Bennich, Gastão Krein, Lei Chang, Craig D. Roberts, David J. Wilson

Institutions: Universidade Cruzeiro do Sul, Universidade Estadual Paulista (Unesp), Argonne National Laboratory, Forschungszentrum Jülich, Illinois Institute of Technology

Language: Latvian

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: U.S. Department of Energy

OpenAlex ID: W1968548467

FWCI: 2.303

Cites: 44

Cited by: 38

Related to: 10