Strong phases and factorization for color suppressed decays

Sonny Mantry, Dan Pirjol, Iain W. Stewart

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

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.

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume68
Issue number11
DOIs
StatePublished - 2003

Fingerprint

Dive into the research topics of 'Strong phases and factorization for color suppressed decays'. Together they form a unique fingerprint.

Cite this