Measuring gamma in B -> K pi pi Decays
High Energy Physics - Phenomenology
2013-05-29 v4 High Energy Physics - Experiment
Abstract
We re-examine the question of measuring the weak phase gamma in B -> K pi pi decays. To this end, we express all B -> K pi pi amplitudes in terms of diagrams. We show that, as in B -> K pi, there exist relations between certain tree and electroweak-penguin diagrams. The imposition of these relations allows the extraction of gamma from measurements of the B -> K pi pi observables. We estimate the theoretical error in this method to be O(5%).
Cite
@article{arxiv.1011.4973,
title = {Measuring gamma in B -> K pi pi Decays},
author = {Maxime Imbeault and Nicolas Rey-Le Lorier and David London},
journal= {arXiv preprint arXiv:1011.4973},
year = {2013}
}
Comments
20 pages, 10 figures, reference updated, sentences added regarding indirect CP violation and CP of the final state. Text added regarding the extraction of symmetric decay amplitudes using a Dalitz-plot analysis, and the momentum dependence of the diagrams