Measurement of gamma using B -> K pi pi and B -> K K Kbar decays

Bhubanjyoti Bhattacharya; David London; Maxime Imbeault

Measurement of gamma using B -> K pi pi and B -> K K Kbar decays

High Energy Physics - Phenomenology 2013-06-25 v1 High Energy Physics - Experiment

Authors: Bhubanjyoti Bhattacharya , David London , Maxime Imbeault

Abstract

The BaBar measurements of the Dalitz plots for B0 -> K+ pi0 pi-, B0 -> K0 pi+ pi-, B+ -> K+ pi+ pi-, B0 -> K+ K0 K-, and B0 -> K0 K0 Kbar0 decays are used to cleanly extract the weak phase gamma. We find four possible solutions: $(31^{+2}_{-3})^\circ$ , $(77 \pm 3)^\circ$ , $(258^{+4}_{-3})^\circ$ , and $(315^{+3}_{-2})^\circ$ . One solution -- $(77 \pm 3)^\circ$ -- is consistent with the SM. Its error, which includes leading-order flavor-SU(3) breaking, is far smaller than that obtained using two-body B decays.

Keywords

weak phase gamma dalitz plot analysis b decays babar experiment flavor-su(3) breaking standard model

Cite

@article{arxiv.1306.5574,
  title  = {Measurement of gamma using B -> K pi pi and B -> K K Kbar decays},
  author = {Bhubanjyoti Bhattacharya and David London and Maxime Imbeault},
  journal= {arXiv preprint arXiv:1306.5574},
  year   = {2013}
}

Comments

Presented by David London at the 2013 Flavor Physics and CP Violation conference (FPCP-2013), Buzios, Rio de Janeiro, Brazil, May 19-24, 2013, 9 pages, 4 figures

Measurement of gamma using B -> K pi pi and B -> K K Kbar decays

Abstract

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