Tuesday, June 25, 2013

1306.5574 (Bhubanjyoti Bhattacharya et al.)

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

Bhubanjyoti Bhattacharya, David London, Maxime Imbeault
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.
View original: http://arxiv.org/abs/1306.5574

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