a Department of Physics, Huaibei Coal Industry Teacher's College, Huaibei 235000, China; b Institute of Physics, Nankai University, Tianjin 300071, China; c Institute of High Energy Physics, Beijing 100039, China
Abstract We have analyzed the D0→$\pi^+\pi^-$ decay with $\alpha$s corrections in quantum chromodynamic (QCD) factorization and with the soft-gluon corrections in the light cone QCD sum rules. The soft-gluon effects are firstly calculated in the decay channel. The results show that once the factorization contributions, the $\alpha$s corrections, and the soft-gluon effects are all considered, we can satisfactorily explain the experimental data in the decay channel.
Received: 06 June 2003
Revised: 11 November 2003
Accepted manuscript online:
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