Chin. Phys. Lett.  2002, Vol. 19 Issue (11): 1596-1598    DOI:
Original Articles |
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
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WU Xiang-Yao, LI Zuo-Hong, CUI Jian-Ying et al  2002 Chin. Phys. Lett. 19 1596-1598
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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.
Keywords: 13.25.Hw      11.55.Hx      12.38.Lg     
Published: 01 November 2002
PACS:  13.25.Hw (Decays of bottom mesons)  
  11.55.Hx (Sum rules)  
  12.38.Lg (Other nonperturbative calculations)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2002/V19/I11/01596
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LI Zuo-Hong
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