2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 4, 503-511
DOI 10.1007/s100529800787

QCD interactions of heavy mesons with pions
by light-cone sum rules

P. Colangelo1 - F. De Fazio1,2

1 I.N.F.N., Sezione di Bari, I-70126 Bari, Italy
2 Dipartimento di Fisica, Universitá di Bari, I-70126 Bari, Italy

Received: 30 May 1997 / Revised version: 7 October 1997 / Published online: 23 February 1998

Light-cone QCD sum rules are employed to compute the strong coupling constants: $g_{B^* B^* \pi}$, $g_{B_1 B_0 \pi}$ and $g_{B_1 B^* \pi}$, where (B,B*) and (B0,B1) are negative and positive parity (0-,1-) and (0+,1+) $\bar q Q$ doublets. The couplings are calculated both for finite values of the heavy quark mass and in the infinite heavy quark mass limit, deriving sum rules for $m_Q \to \infty$.

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