Dalitz plot analysis of the decay B+- -> K+-K+-K-+

Details Dalitz plot analysis of the decay B+- -> K+-K+-K-+ Dalitz plot analysis of the decay B+- -> K+-K+-K-+

2006-04-29

arxiv.org/abs/hep-ex/0605003v1

Phys.Rev.D74:032003,2006

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 5 figures, to be submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.74.032003

We analyze the three-body charmless decay B+- -> K+-K+-K-+ using a sample of 226.0 +- 2.5 million BBbar pairs collected by the BABAR detector. We measure the total branching fraction and CP asymmetry to be B = (35.2 +- 0.9 +-1.6) x 10^{-6} and A_CP = (-1.7 +- 2.6 +- 1.5)%. We fit the Dalitz plot distribution using an isobar model and measure the magnitudes and phases of the decay coefficients. We find no evidence of CP violation for the individual components of the isobar model. The decay dynamics is dominated by the K+K- S-wave, for which we perform a partial-wave analysis in the region m(K+K-) < 2 GeV/c^2. Significant production of the f0(980) resonance, and of a spin zero state near 1.55 GeV/c^2 are required in the isobar model description of the data. The partial-wave analysis supports this observation.

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