TY - JOUR
T1 - Strong phases and factorization for color suppressed decays
AU - Mantry, Sonny
AU - Pirjol, Dan
AU - Stewart, Iain W.
PY - 2003
Y1 - 2003
N2 - We prove a factorization theorem in QCD for the color suppressed decays [Formula Presented] and [Formula Presented] where M is a light meson. Both the color-suppressed and W-exchange or annihilation amplitudes contribute at lowest order in [Formula Presented] where [Formula Presented] so no power suppression of annihilation contributions is found. A new mechanism is given for generating nonperturbative strong phases in the factorization framework. Model-independent predictions that follow from our results include the equality of the [Formula Presented] and [Formula Presented] rates and the equality of nonperturbative strong phases between isospin amplitudes, [Formula Presented] Relations between amplitudes and phases for [Formula Presented] are also derived. These results do not follow from large [Formula Presented] factorization with heavy quark symmetry.
AB - We prove a factorization theorem in QCD for the color suppressed decays [Formula Presented] and [Formula Presented] where M is a light meson. Both the color-suppressed and W-exchange or annihilation amplitudes contribute at lowest order in [Formula Presented] where [Formula Presented] so no power suppression of annihilation contributions is found. A new mechanism is given for generating nonperturbative strong phases in the factorization framework. Model-independent predictions that follow from our results include the equality of the [Formula Presented] and [Formula Presented] rates and the equality of nonperturbative strong phases between isospin amplitudes, [Formula Presented] Relations between amplitudes and phases for [Formula Presented] are also derived. These results do not follow from large [Formula Presented] factorization with heavy quark symmetry.
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U2 - 10.1103/PhysRevD.68.114009
DO - 10.1103/PhysRevD.68.114009
M3 - Article
AN - SCOPUS:1642454536
SN - 1550-7998
VL - 68
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
ER -