Work

Heavy-quark symmetries in the light of nonperturbative QCD approaches

Year: 2012

Type: article

Abstract: We critically review the validity of heavy-quark spin and flavor symmetries in heavy-light decay constants, form factors and effective couplings obtained within a nonperturbative framework, the ingredients of which are all motivated by Dyson-Schwinger equations studies of QCD. Along the way, we make new predictions for two effective nonphysical couplings: g_{DsDK} = 24.1+2.5/-1.6 and g_{BsBK} = 33.3+4.0/-3.7.

Source: Acervo Digital da Universidade Estadual Paulista (Universidade Estadual Paulista)

DOI: 10.48550/arxiv.1202.0454

Authors: El-Bennich, Bruno, Roberts, Craig D., Ivanov, Mikhail A.

Institutions: Universidade Cruzeiro do Sul, Argonne National Laboratory, Joint Institute for Nuclear Research

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Fundação de Amparo à Pesquisa do Estado de São Paulo, Nuclear Physics