Dalitz Plot Analysis of the Decay B+ -> K+K+K-

Dvoretskii, Alexei

Stanford Linear Accelerator Center

关键词: Decay;    Experiment-Hep,Hepex;    Asymmetry;    72 Physics Of Elementary Particles And Fields;    Production Experiment-Hep,Hepex;   

DOI  :  10.2172/881954
RP-ID  :  SLAC-R-822
RP-ID  :  AC02-76SF00515
RP-ID  :  881954

美国|英语

来源: UNT Digital Library

【 摘 要 】

The authors perform an analysis of the three-body charmless decay B{sup {+-}} {yields} K{sup {+-}}K{sup {+-}}K{sup {-+}} using a sample of 226.0 {+-} 2.5 million B{bar B} pairs collected by the BABAR detector and measure the total branching fraction and Cp asymmetry to be {beta} = (35.2 {+-} 0.9 {+-} 1.6) x 10{sup -6} and A{sub CP} = (-1.7 {+-} 2.6 {+-} 1.5)%. They fit the Dalitz plot distribution using an isobar model and report the measured values of magnitudes and phases of the production coefficients. The decay dynamics is dominated by the K{sup +}K{sup -} S-wave, for which we perform a partial-wave analysis in the region m(K{sup +}K{sup -}) < 2 GeV/c{sup 2}. They find no evidence of CP violation for individual components of the isobar model.