Calculating phases between B→K*π amplitudes

Michael Gronau, Dan Pirjol, Jonathan L. Rosner

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A phase ΔΦ between amplitudes for B0→K *0π0 and B0→K*+π - plays a crucial role in a method for constraining Cabibbo-Kobayashi-Maskawa parameters. We present a general argument for destructive interference between amplitudes for B0→K* +π- and B0→K*0π0 forming together a smaller I(K*π)=3/2 amplitude. Applying flavor SU(3) and allowing for conservative theoretical uncertainties, we obtain lower limits on ΔΦ and its charge conjugate. Values of these two phases favored by the BABAR collaboration are in good agreement with our bounds.

Original languageEnglish
Article number094026
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number9
DOIs
StatePublished - 20 May 2010

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