D0-(D)over-bar0 mixing and CP violation from FOCUS experiment

被引：0
作者：
Park, H [1 ]
机构：
[1] Korea Univ, Dept Phys, Seoul 136701, South Korea
来源：
HIGH ENERGY PHYSICS, VOLS I AND II | 2001年
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D O I：
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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：
Measurement results on D-0 - (D) over bar (0) mixing and CP violation are presented. FOCUS is the fixed target experiment at Fermilab and results are based on a high statistics photo-produced charm sample collected during 96-97 run. We reconstructed more than 1 million charmed particles and compared the lifetimes of two D-0 meson decays to K(-)pi (+) and K-K+. We obtained a mixing parameter, y(cp), is (3.42 +/- 1.39 +/- 0.74)%. We also searched CP asymmetries in D+ --> K(-)K(+)pi (+), D-0 --> K-K+ and D-0 --> pi (-)pi (+) decay modes. We did not see any evidence of CP violation by comparing the decay rates for particle and antiparticle.
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页码：817 / 819
页数：3
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