Searches for CP violation in two-body charm decays
نویسنده
چکیده
where the first uncertainty is statistical and the second systematic. This represents a significant improvement in precision over the previous measurement of this parameter. Measurements of the parameter AΓ, defined as the CP asymmetry of the D0 effective lifetime when decaying to a CP eigenstate, are also presented. Using semi-leptonic b-hadron decays to tag the flavour of the D0 meson at production with the K+K− and π+π− final states yields AΓ(KK) = (−0.134±0.077+0.026 −0.034)%, AΓ(ππ) = (−0.092±0.145+0.025 −0.033)%.
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تاریخ انتشار 2015