Using U Spin to Extract gamma from Charmless B -> PPP Decays
Abstract
Some years ago, a method was proposed for measuring the CP-violating phase gamma using pairs of two-body decays that are related by U-spin reflection (d <-> s). In this paper we adapt this method to charmless B -> PPP decays. Time-dependent Dalitz-plot analyses of these three-body decays are required for the measurement of the mixing-induced CP asymmetries. However, isobar analyses of the decay amplitudes are not necessary. A potential advantage of using three-body decays is that the effects of U-spin breaking may be reduced by averaging over the Dalitz plot. This can be tested independently using the measurements of direct CP asymmetries and branching ratios in three-body charged B decays.
Cite
@article{arxiv.1503.00737,
title = {Using U Spin to Extract gamma from Charmless B -> PPP Decays},
author = {Bhubanjyoti Bhattacharya and David London},
journal= {arXiv preprint arXiv:1503.00737},
year = {2015}
}
Comments
16 pages, no figures; Revised text; Version accepted for publication in JHEP