HEAVY-QUARK AND CHIRAL-SYMMETRY PREDICTIONS FOR SEMILEPTONIC DECAYS (B)OVER-BAR-]D(D-ASTERISK)PI-L(NU)

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题名:	HEAVY-QUARK AND CHIRAL-SYMMETRY PREDICTIONS FOR SEMILEPTONIC DECAYS (B)OVER-BAR-]D(D-ASTERISK)PI-L(NU)
作者:	CHENG,HY;CHEUNG,CY;DIMM,W;LIN,GL;LIN,YC;YAN,TM;YU,HL
贡献者:	物理研究所
关键词:	BRANCHING FRACTIONS;PERTURBATION-THEORY;PARTICLE PROPERTIES;MESONS;HADRONS
日期:	1993
上传时间:	2010-07-08 14:12:03 (UTC+8)
出版者:	中央大學
摘要:	We study in detail the prediction for the semileptonic decays BBAR --> D(D)pilnuBAR by heavy quark and chiral symmetry. The branching ratio for BBAR --> DpilnuBAR is quite significant, as big as (0.5-1)%. The branching ratio for BBAR --> DpilnuBAR is only of the order of 10(-4)-10(-5). Numerical results for various single-particle spectra and their dependence on the pion momentum cutoff schemes are presented in a series of figures, as are the model-independent ratios for differential rates of D and D. We also study the parity-violation effects on the decay rates for different polarization states of the D.
關聯:	PHYSICAL REVIEW D
显示于类别:	[物理研究所] 期刊論文

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