Form Factors and Coupling Constant for KD{sub s}*D vertex from QCD Sum Rules

Journal Article · Thu Dec 02 00:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1843649· OSTI ID:20630384

Cunha, A.C. Jr. da; Bracco, M E ^[1]; Lozea, A ^[2]

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1. UERJ - Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-013 Maracana, Rio de Janeiro (Brazil)
2. UFRJ - Universidade Federal do Rio de Janeiro, C.P. 68528, 21945-970, Rio de Janeiro (Brazil)

The KD{sub s}*D form factor is evaluated in a QCD Sum Rule calculation using a three point function. We have also estimated the KD{sub s}*D coupling constant. For these purpose we have computed the form factors momentum dependence in the cases where the K is off-shell, the D{sub s}{sup *} is off-shell and introduce also the case of D off-shell. We conclude that this momentum dependence is very different, but they lead the same coupling constant.

• OSTI ID: 20630384
• Journal Information: AIP Conference Proceedings, Vol. 739, Issue 1; Conference: Joint meeting on QCD and QCP: 9. hadron physics and 7. relativistic aspects of nuclear physics, Rio de Janeiro (Brazil), 28 Mar - 3 Apr 2004; Other Information: DOI: 10.1063/1.1843649; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COUPLING CONSTANTS
D MESONS
FORM FACTORS
KAONS
MESON-MESON INTERACTIONS
QUANTUM CHROMODYNAMICS
SUM RULES
VERTEX FUNCTIONS