Original Articles |
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Perturbative Quantum Chromodynamics Effects in Bc →PP Decays |
GUO Li-Bo;DU Dong-Sheng |
Department of Physics, Wuhan University, Wuhan 430072
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
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Cite this article: |
GUO Li-Bo, DU Dong-Sheng 2001 Chin. Phys. Lett. 18 498-500 |
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Abstract Using the leading order low energy effective Hamiltonian, we calculate Bc →PP (where P stands for pseudoscalar meson) decays induced by pure W-emission mechanisms. In order to estimate the hadronic matrix elements, we apply the perturbative quantum chromodynamics (PQCD) method proposed by Szczepaniak et al. [Phys. Lett. B 243 (1990) 287] and developed by Simma et al. [Phys. Lett. B 272 (1991) 395]. Comparing with predictions of other models, we find that the PQCD method is suitable for these decays and therefore the spectator ansatz seems questionable.
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Keywords:
12.15.Ji
12.38.Bx
13.25.Hw
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Published: 01 April 2001
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PACS: |
12.15.Ji
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(Applications of electroweak models to specific processes)
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12.38.Bx
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(Perturbative calculations)
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13.25.Hw
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(Decays of bottom mesons)
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