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Paper detail

g(B*Bpi)-coupling in the static heavy quark limit

By means of QCD simulations on the lattice, we compute the coupling of the heavy-light mesons to a soft pion in the static heavy quark limit. The gauge field configurations used in this calculations include the effect of N_f=2 dynamical Wilson quarks, while for the static quark propagator we use its improved form (so called HYP). On the basis of our results we obtain that the coupling g=0.44 +/- 0.03 (+0.07/-0.00), where the second error is flat (not gaussian).

preprint2009arXivOpen access
Damir BecirevicBenoit BlossierEmmanuel ChangBenjamin Haas
hep-phhep-lat
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Damir BecirevicBenoit BlossierEmmanuel ChangBenjamin Haas

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