Strong phases and D0-(D)over-bar0 mixing parameters

被引:0
作者
Falk, AF [1 ]
Nir, Y
Petrov, AA
机构
[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[2] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel
[3] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
关键词
weak decays; heavy quarks physics;
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中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We argue that there could be significant SU(3) violating resonance contributions to D --> K pi decays which would affect the extraction of the D-0 - (D) over bar(0) mixing parameters from experiment. Such contributions can induce a strong phase in the interference between the doubly Cabibbo suppressed and the mixing induced Cabibbo favored contributions to the D-0 --> K(+)pi(-) and (D) over bar(0) --> K(-)pi(+) decays. Consequently, the interpretation of a large, CP conserving interference term can involve a large mass difference Delta M rather than a large width difference Delta Gamma.
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页数:12
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