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KTeV KL->pi^+-e^-+nu e⁺e^- plots

Updated August 29, 2007.

[Ke3ee Results]

Plots in Phys. Rev. Lett. 99, 081803 (2007)

• diagram7.eps, diagram7.pdf
  FIG.1: Processes contributing to the K_L->pi^+-e^-+nu e⁺e^- decay: the virtural photon comes (a) from the charged pion, (b) from the K_e3 electron, and (c) from the kaon decay vertex. The process (c) includes the structure dependent (SD) amplitudes. The exchange diagrams have veen omitted for clarity.
  
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• pp0kine_acc_54_7705_logww.eps, pp0kine_acc_54_7705_logww.pdf
  FIG.2: The k_+-0 distributiosn for data and MC after all analysis requirements except for 'k_+-0'. The vertical line and arrow show the accepted region for the signal candidates (k_+-0 < -0.002 GeV²/c²). The disagreement betweendata and MC in the range k_+-0>0.02GeV²/c² does not affect the background estimate in the signal region. Data-MC comparisons between many other distributions in teh accepted k_+-0 region show good agreement leading us to conclude that the backgrounds are well-modeled in the region of interest.
  
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• t_pipape_ova__6c05_lo_paper.eps, t_pipape_ova__6c05_lo_paper.pdf
  FIG.3(a): Comparisons of the t_\botM_pi² distributions for data (dots) and MC (histogram), (a) with MC-LO. The data-to-MC ratios at the bottom are fit to a straight line.
  
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• t_pipape_ova_pe6c05nlopaper.eps, t_pipape_ova_pe6c05nlopaper.pdf
  FIG.3(b): Comparisons of the t_\botM_pi² distributions for data (dots) and MC (histogram), (b) with MC-NLO(p⁴). The data-to-MC ratios at the bottom are fit to a straight line.
  
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• mee_ova_wo_6c055paper_s.eps, mee_ova_wo_6c055paper_s.pdf
  FIG.4: Comparison of the M_e+_e- distribution for data (dots), and MC (histogram) with NLO(p⁴) correction.
  
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Send corrections to Taku Yamanaka.