title: Measuring gamma cleanly with CP-tagged B(s) and B(d) decays
abstract: We propose a new method for measuring the Cabibbo-Kobayashi-Maskawa phase gamma using the partial rates for CP-tagged B(s) decays. Such an experiment could be performed at a very high luminosity symmetric e(+)e(-) collider operating at the Upsilon(5S) resonance, where the B(s)&Bmacr;(s) pair is produced in a state of definite CP. We also discuss CP tagging in the B(d) system at the Upsilon(4S), where a time-dependent analysis is required to compensate for the anticipated large CP violation in B(d)-&Bmacr;(d) mixing.
authors.affiliation: Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
authors.initials: AF
authors.lastname: Falk
authors.initials: AA
authors.lastname: Petrov