中国物理B ›› 2004, Vol. 13 ›› Issue (4): 469-472.doi: 10.1088/1009-1963/13/4/010

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Non-factorizable contributions in D0→π+π- decay

尹新国1, 吴向尧2, 郭义庆3   

  1. (1)Department of Physics, Huaibei Coal Industry Teacher's College, Huaibei 235000, China; (2)Department of Physics, Huaibei Coal Industry Teacher's College, Huaibei 235000, China; Institute of Physics, Nankai University, Tianjin 300071, China; (3)Institute of High Energy Physics, Beijing 100039, China
  • 收稿日期:2003-06-06 修回日期:2003-11-11 出版日期:2004-04-22 发布日期:2004-04-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Department of Education, Anhui Province, China (Grant No 2001kj200zc).

Non-factorizable contributions in D0→$\pi^+\pi^-$ decay

Wu Xiang-Yao (吴向尧)ab, Yin Xin-Guo (尹新国)a, Guo Yi-Qing (郭义庆)c   

  1. 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
  • Received:2003-06-06 Revised:2003-11-11 Online:2004-04-22 Published:2004-04-20
  • Supported by:
    Project supported by the Natural Science Foundation of Department of Education, Anhui Province, China (Grant No 2001kj200zc).

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摘要： We have analyzed the D0→$\pi^+\pi^-$ decay with α_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 α_s corrections, and the soft-gluon effects are all considered, we can satisfactorily explain the experimental data in the decay channel.

关键词: D meson decay, soft-gluon effects, branching ratio

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.

Key words: D meson decay, soft-gluon effects, branching ratio

中图分类号:  (Decays of charmed mesons)

  • 13.25.Ft
14.40.Lb (Charmed mesons (|C|>0, B=0)) 12.38.Bx (Perturbative calculations) 14.70.Dj (Gluons) 11.55.Hx (Sum rules) 13.40.Ks (Electromagnetic corrections to strong- and weak-interaction processes)