First look at the Dalitz plot of the

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First look at the Dalitz plot of the
D0 KS KK -
J. Magnin - A. ReisCBPF
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Motivation

• Dalitz plot analysis is the most complete method
  of studying the dynamics of three body charm
  decays.
• D0 KsKK- is a good place
  to study the isoscalar f0(980) and the isovector
  a0(980) mesons.
• E831/FOCUS has to have a reasonably good signal
  on this mode.

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Mass Plot

• Cuts (prelimirary)
• Itypvee 4 or 5
• dw1 gt 3 , dw2 gt 3
• Iso1 lt 0.01 , Iso2 lt 0.01
• mprim gt 1 , doppio 0
• signal 1,203 39 events
• width 0.0062 0.00017 GeV/c2

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Next steps...

• Study of the cuts in order to clean the data
  sample.
• MC generation to study acceptance.
• ...