Study of B{sup {+-}}{yields}D{sub CP}K{sup {+-}} and D{sub CP}*K{sup {+-}} decays

We report a study of the modes B{sup {+-}}{yields}DK{sup {+-}} and B{sup {+-}}{yields}D*K{sup {+-}} where D{sup (*)} decays to CP eigenstates. The data sample used contains 275x10{sup 6} BB events at the {upsilon}(4S) resonance collected by the Belle detector at the KEKB energy-asymmetric e{sup +}e{sup -} collider. The CP asymmetries obtained for D{sub CP}K are: A{sub 1}=0.06{+-}0.14(stat){+-}0.05(sys), A{sub 2}=-0.12{+-}0.14(stat){+-}0.05(sys) and for D{sub CP}*K: A{sub 1}*=-0.20{+-}0.22(stat){+-}0.04(sys), A{sub 2}*=0.13{+-}0.30(stat){+-}0.08(sys)