D*-->Dpi and D*-->Dgamma decays: Axial coupling and Magnetic moment of D* meson

Abstract

The axial coupling and the magnetic moment of D*-meson or, more specifically, the couplings g(D*Dpi) and g(D*Dgamma), encode the non-perturbative QCD effects describing the decays D*-->Dpi and D*-->Dgamma. We compute these quantities by means of lattice QCD with Nf=2 dynamical quarks, by employing the Wilson ("clover") action. On our finer lattice (a=0.065 fm) we obtain: g(D*Dpi)=20 +/- 2, and g(D0*D0gamma)=[2.0 +/- 0.6]/GeV. This is the first determination of g(D0*D0gamma) on the lattice. We also provide a short phenomenological discussion and the comparison of our result with experiment and with the results quoted in the literature.

22 pages, 3 figures

References in corpus (9)

• Decay constants and radiative decays of heavy mesons in light-front quark model
• Axial coupling constant of the nucleon for two flavours of dynamical quarks in finite and infinite volume
• Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays
• Kl3 semileptonic form factor from 2+1 flavour lattice QCD
• Determination of B*B pi coupling in unquenched QCD
• On cutoff effects in lattice QCD from short to long distances
• Chiral loop corrections to strong decays of positive and negative parity charmed mesons
• Semileptonic D-decays and Lattice QCD
• D-decays with unquenched Lattice QCD

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