Search for CP violation in D0 and D+ decays

Details Search for CP violation in D0 and D+ decays Search for CP violation in D0 and D+ decays

2000-05-25

arxiv.org/abs/hep-ex/0005037v1

Phys.Lett.B491:232-239,2000; Erratum-ibid.B495:443,2000

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 4 figures

Scientific paper

10.1016/S0370-2693(00)01039-X

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+ to K-K+pi+, D0 to K-K+ and D0 to pi-pi+. We have measured the following CP asymmetry parameters: A_CP(K-K+pi+) = +0.006 +/- 0.011 +/- 0.005, A_CP(K-K+) = -0.001 +/- 0.022 +/- 0.015 and A_CP(pi-pi+) = +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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