As. Dighe et Jl. Rosner, DISCRETE AMBIGUITIES IN EXTRACTING WEAK PHASES FROM B-DECAY, Physical review. D. Particles and fields, 54(7), 1996, pp. 4677-4679
Phases of elements of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, as o
btained using decays of B mesons to pi(+)pi(-), pi(+/-)K(-/+), and <pi
(+)(K)over bar (0)> or <pi(-)(K)over bar (0)>, are shown to have a cla
ss of discrete ambiguities. In most cases these can be eliminated usin
g other information on CKM phases.