QCD sum rule approach to the new mesons and the gDsJDK coupling constant
Document title: QCD sum rule approach to the new mesons and the gDsJDK coupling constant
Journal: Brazilian journal of physics
Database: PERIÓDICA
System number: 000408182
ISSN: 0103-9733
Authors: 1
Institutions: 1Universidade de Sao Paulo, Instituto de Fisica, Sao Paulo. Brasil
Year:
Season: Jun
Volumen: 37
Number: 2C
Pages: 742-744
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract We use diquark-antidiquark currents to investigate the masses and partial decay widths of the recently observed mesons D+sJ(2317), D*00(2308) and X(3872), considered as four-quark states, in a QCD sum rule approach. In particular we investigate the coupling constant gDsJDK. We found that the gDsJDK obtained in this four-quark scenario is smaller than the coupling constant obtained when D+sJ(2317) is considered as a conventional cs state
Disciplines: Física y astronomía
Keyword: Física,
Física de partículas y campos cuánticos,
Mecánica cuántica,
Partículas elementales,
Sabor,
Cromodinámica cuántica,
Quarks
Keyword: Physics and astronomy,
Particle physics and quantum fields,
Physics,
Quantum mechanics,
Elementary particles,
Flavour,
Quantum chromodynamics (QCD),
Quarks
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