Enhanced effects on extracting γfrom untagged B^0 and B_s decays

Michael Gronau, Yuval Grossman, Ze'ev Surujon +1

The weak phase γcan be determined using untagged B^0\to DK_S or B_s\to Dϕ, Dη^{(')} decays. In the past, the small lifetime difference y\equiv ΔΓ/(2Γ) has been neglected in B^0, wh…