ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2004, vol. 93, p. 131804-1
Search for B± →[K∓π ±]DK± and Upper Limit on the b →u Amplitude in B± → DK±
The decay of B± → [K∓π ±]DK ± is discussed. It is found that K∓π± pair originates from the decay of a D0 or D̄0. An upper limit is set on the ratio which is less than 0.026 (90% C.L.). This results in a small value of the amplitude ratio.