Long-distance contributions to D(0)-(D)over-bar(0) mixing parameters

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题名:	Long-distance contributions to D(0)-(D)over-bar(0) mixing parameters
作者:	Cheng,HY;Chiang,CW
贡献者:	物理學系
关键词:	NONLEPTONIC DECAYS;D-MESONS;PHYSICS
日期:	2010
上传时间:	2012-06-11 10:43:39 (UTC+8)
出版者:	國立中央大學
摘要:	Long-distance contributions to the D(0)-(D) over bar (0) mixing parameters x and y are evaluated using latest data on hadronic D(0) decays. In particular, we take on two-body D -> PP and VP decays to evaluate the contributions of two-body intermediate states because they account for similar to 50% of hadronic D(0) decays. Use of the diagrammatic approach has been made to estimate yet-observed decay modes. We find that y is of order a few x 10(-3) and x of order 10(-3) from hadronic PP and VP modes. These are in good agreement with the latest direct measurement of D(0)-(D) over bar (0) mixing parameters using the D0 -> K(S) pi(+) pi(-) and K(S) K(+) K(-) decays by BABAR. We estimate the contribution to y from the VV modes using the factorization model and comment on the single-particle resonance effects and contributions from other two-body modes involving even-parity states.
關聯:	PHYSICAL REVIEW D
显示于类别:	[物理學系] 期刊論文

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