Comment on "Resolving the sign ambiguity in $\Delta {\Gamma }_s$ with $B_s\to D_{s}K$"

Yuehong Xie

This is a comment on the recent paper by Soumitra Nandi1 and Ulrich Nierste ``Resolving the sign ambiguity in $\Delta {\Gamma }_s$ with $B_s\to D_{s}K$'', arXiv:0801.0143 [hep-ph].