Rho decay widths of excited heavy mesons from light-cone QCD sum rules in the leading order of HQET

Details Rho decay widths of excited heavy mesons from light-cone QCD sum rules in the leading order of HQET Rho decay widths of excited heavy mesons from light-cone QCD sum rules in the leading order of HQET

1998-02-03

arxiv.org/abs/hep-ph/9802225v2

Phys.Rev. D58 (1998) 094033

Physics

High Energy Physics

High Energy Physics - Phenomenology

Several references and a paragraph discussing the choice of the parameter $u_0$ are added. Final version to appear in Phys. Re

Scientific paper

10.1103/PhysRevD.58.094033

The couplings and decay widths of the proceses (1^+,2^+)->(0^-,1^-)+rho are studied with ligh-cone QCD sum rules in the leading order of heavy quark effective theory. These processes are employed to estimate the two pion transition widths of the (1^+,2^+) doublet through the low mass tail of the rho resonance. Our calculation shows that the two pion decay widths are much smaller than the single pion decay widths. However, B_1 and B_2^* mesons should also have significant two pion decay widths around 1.5 MeV.

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