Look%20for%206%20D0%20decay%20modes:

1
Preliminary look at D0 ? P P (p0) decaysS.
Davis, C. Plager, M. SelenApril/6/2001

• Look for 6 D0 decay modes
• Kp-, pp-, KK-, Kp-p0, pp-p0, KK-p0
• Demand that D0 comes from D ? D0p

2
Kp-p0
Kp-
CLEO II.V Data
3
pp-p0
pp-
CLEO II.V Data
4
K K-
K K-p0
CLEO II.V Data
5
MC
Kp-
Data
Kp-
Kp-p0
Kp-p0
XD
XD
6
Ignoring systematics, monte carlo
statistics,and common sense
Mode PDG () Very Prelim ()
Kp- 3.83 ? 0.09 reference
pp- 0.15 ? 0.01 0.12 ? 0.005
KK- 0.43 ? 0.02 0.40 ? 0.010
Kp-p0 13.9 ? 0.9 reference
pp-p0 2.32 ? 1.12 2.16 ? 0.060
KK-p0 0.30 ? 0.13 0.28 ? 0.018
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Kp-p0
M(Kp-)2
M(pp0)2
M(pp0)2
M(Kp-)2
CLEO II.V Data
M(K-p0)2
8
pp-p0
M(pp-)2
M(pp0)2
M(pp0)2
M(pp-)2
CLEO II.V Data
M(p-p0)2
9
K K-p0
M(K K-)2
M(Kp0)2
M(Kp0)2
M(Kp-)2
CLEO II.V Data
M(K-p0)2
10

• Partial To Do List
• Efficiency Yields in BR measurements.
• Lots of work for Dalitz analyses.
• Endless systematics !
• We are just getting started !
• (Scott will be busy)