Possible explanation of the discrepancy of the light-cone QCD sum rule calculation ofgD*Dπcoupling with experiment | Zendy

Damir Bečirević | Zendy; Jérôme Charles | Zendy; Alain Le Yaouanc | Zendy; L. Oliver | Zendy; O. Pène | Zendy; J.C. Raynal | Zendy

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Possible explanation of the discrepancy of the light-cone QCD sum rule calculation ofg_D*Dπcoupling with experiment

Author(s) -

Damir Bečirević,

Jérôme Charles,

Alain Le Yaouanc,

L. Oliver,

O. Pène,

J.C. Raynal

Publication year - 2003

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2003/01/009

Subject(s) - physics , sum rule in quantum mechanics , light cone , particle physics , quantum chromodynamics , coupling (piping) , cone (formal languages) , mathematical physics , algorithm , mechanical engineering , computer science , engineering

The introduction of an explicit negative radial excitation contribution inthe hadronic side of the light cone QCD sum rule (LCSR) of Belyaev, Braun,Khodjamirian and Ruckl, can explain the large experimental value of g(D*Dpi),recently measured by CLEO. At the same time, it considerably improves thestability of the sum rule when varying the Borel parameter.Comment: 9 pages, 1 PostScript figure

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