Heavy-quark symmetries in the light of nonperturbative QCD approaches


Autoria(s): El-Bennich, Bruno; Roberts, Craig D.; Ivanov, Mikhail A.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/12/2011

Resumo

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: gDsDK = 24.1-1.6 +2.5 and gBsBK = 33.3 -3.7 +4.0. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Identificador

http://arxiv.org/abs/1202.0454

Proceedings of Science.

1824-8039

http://hdl.handle.net/11449/72821

2-s2.0-84882950018

2-s2.0-84882950018.pdf

Idioma(s)

eng

Relação

Proceedings of Science

Direitos

openAccess

Palavras-Chave #Decay constants #Effective coupling #Flavor symmetry #Form factors #Heavy-quark #Nonperturbative #Couplings #Green's function #High energy physics
Tipo

info:eu-repo/semantics/conferencePaper