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
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
关键词 ：
12.15.Ji ,
12.38.Bx ,
13.25.Hw
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.
Key words ：
12.15.Ji
12.38.Bx
13.25.Hw
出版日期: 2001-04-01
:
12.15.Ji
(Applications of electroweak models to specific processes)
12.38.Bx
(Perturbative calculations)
13.25.Hw
(Decays of bottom mesons)
[1]
GAO Ying-Jia;ZHANG Yu-Jie;CHAO Kuang-Ta. Radiative Decays of Charmonium into Light Mesons
[2]
DU Dong-Sheng;LI Ying;Lü Cai-Dian. Study of W-Exchange Mode D0 → ФK0
[3]
Lü Cai-Dian;SHEN Yue-Long;WANG Wei. Role of Electromagnetic Dipole Operator in the Electroweak Penguin Dominated Vector Meson Decays of B Meson
[4]
SHEN Zhen-Qi;ZHU Wei. Colour Dipole Picture for Deep Inelastic Scattering in the Collinear Factorization Scheme
[5]
ZHANG Ben-Wei;WANG En-Ke. Photon Radiation Induced by Multiple Parton Rescattering in Deeply Inelastic Scattering
[6]
ZHANG Chao;ZHENG Xiao-Ping;LI Jia-Rong. Colour Conductivity of a Quark Plasma at Finite Chemical Potential
[7]
WU Xiang-Yao;LI Zuo-Hong;CUI Jian-Ying;HUANG Tao. Impacts of the Soft-Gluon Exchanges on B →ππ Decays
[8]
ZHENG Xiao-Ping;LI Jia-Rong. Covariant Perturbation Theory of Non-Abelian Kinetic Theory
[9]
RUAN Jian-Hong;ZHU Wei;LI Guang-Lie;. A Twist-4 Effect in the Parton Evolution Processes
[10]
ZHU Wei. A New Derivation of Standard Quantum Chromodynamics Evolution Equation
[11]
WU Yue-liang. Probing New Physics from CP Violation in Radiative B Decays
[12]
XIAO Zhen-jun;LU Lin-xia;GUO Hong-kai;LU Gong-ru. Rare Decays B→ Xs,d vv and Bs,d →1+ 1- in the Multiscale Walking Technicolor Model
[13]
XIAO Zhen-jun. K →πvv: New Contributions from Unit-Charged Scalars in Topcolor-Assisted Technicolor Models
[14]
LIU Jue-ping;WANG Ping. Static Three-Body Potential in Baryons
[15]
DAI Yuan-ben;HUANG Chao-shang;HUANG Ming-qiu;JIN Hong-ying;LIU Chun. Decay Widths of Excited Heavy Mesons from Quantum Chromodynamics
Sum Rules in the Infinite Mass Limit
2001, Vol. 18 
