Search for CP violation in D 0 and D + decays
نویسندگان
چکیده
A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+ → K−K+π+, D0 → K−K+ and D0 → π−π+. We have measured the following CP asymmetry parameters: ACP (K −K+π+) = +0.006± 0.011± 0.005, ACP (K −K+) = −0.001± 0.022± 0.015 and ACP (π −π+) = +0.048 ± 0.039 ± 0.025 where the first error is statistical and the second error is systematic. These asymmetries are consistent with zero with smaller errors than previous measurements.
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