Impacts of the Soft-Gluon Exchanges on B →ππ Decays
WU Xiang-Yao1,2, LI Zuo-Hong3, CUI Jian-Ying3, HUANG Tao1
1Institute of High Energy Physics, Chinese Academy of
Sciences, PO Box 918(4), Beijing 100039
2Department of Physics, Huaibei Coal Industry Teachers College, Huangshan 235000
3Department of Physics, Yantai University, Yantai 264005
Impacts of the Soft-Gluon Exchanges on B →ππ Decays
1Institute of High Energy Physics, Chinese Academy of
Sciences, PO Box 918(4), Beijing 100039
2Department of Physics, Huaibei Coal Industry Teachers College, Huangshan 235000
3Department of Physics, Yantai University, Yantai 264005
Abstract： We have investigated the role of soft-gluon exchanges in B →ππ, using the light-cone sum rules in quantum chromodynamics. The calculations are carried out not only for the tree operators but also for the penguin operators. We conclude that soft-gluon exchanges contribute to the decay amplitudes, noticeably on some decay channels, and thus cannot be neglected.
WU Xiang-Yao;LI Zuo-Hong;CUI Jian-Ying;HUANG Tao. Impacts of the Soft-Gluon Exchanges on B →ππ Decays[J]. 中国物理快报, 2002, 19(11): 1596-1598.
WU Xiang-Yao, LI Zuo-Hong, CUI Jian-Ying, HUANG Tao. Impacts of the Soft-Gluon Exchanges on B →ππ Decays. Chin. Phys. Lett., 2002, 19(11): 1596-1598.
2002, Vol. 19 
