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Measuring gamma with B -> K pi pi and B -> K K Kbar Decays · Around

2011

Measuring gamma with B -> K pi pi and B -> K K Kbar Decays

Lorier, Nicolas Rey-Le, London, David

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We present a method for cleanly extracting the CP phase gamma from the Dalitz plots of B+ -> K+ pi+ pi-, Bd -> K+ pi0 pi-, Bd -> K0 pi+ pi-, Bd -> K+ K0 K-, and Bd -> K0 K0 Kbar0.

The B -> K pi pi and B -> K K Kbar decays are related by flavor SU(3) symmetry, but SU(3) breaking is taken into account.
Most of the experimental measurements have already been made -- what remains is a Dalitz-plot analysis of Bd -> K0 K0 Kbar0 (or Bd -> KS KS KS).
We (very) roughly estimate the error on gamma to be ~25%.

Built on

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Similar

CKMfitter Group (J. Charles et al.), Eur. Phys. J. C41, 1-131 (2005) [hep-ph/0406184], updated results and plots available at: http://ckmfitter.in2p3.fr
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Constraints from three-body decays on the parameters of the CKM matrix have been examined in M. Ciuchini, M. Pierini and L. Silvestrini, Phys. Rev. D 74
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2008
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N. Rey-Le Lorier, M. Imbeault and D. London, arXiv:1011.4972 [hep-ph]
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M. Imbeault, N. L. Lorier and D. London, arXiv:1011.4973 [hep-ph]
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J. P. Lees [The BABAR Collaboration], arXiv:1111.3636 [hep-ex]
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B. Aubert et al
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2008
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B. Aubert et al
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2009
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K. Nakamura et al
2010
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B. Aubert et al
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2010
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