Dalitz Analysis of D0->K0s pi+pi- and D0-D0B Mixing<br> 
David Asner<br> 
Lawrence Livermore <br><br> 
Abstract<br> 

We use the CLEO II.V data sample to develop a technique to search for
D0 - D0barB mixing by studying the time dependent dalitz
distribution for the decay of a D_0 to the final state
K0_s pi+ pi-.  We consider seventeen resonanant subcomponents,
K*-, K*-(1410), K0*-(1430), K2*-(1430),
K*-(1680), omega, rho0, rho0(1450), rho0(1700),
sigma(500), f_0(980), f_2(1270),
f_0(1370), f_0(1500), f_0(1710), and the K*+ and
K0*+(1430), which are double Cabibbo suppressed, as well
as a non-resonant contribution.  We give preliminary measurements of
the relative amplitudes and phases, including a first measurement of
the double Cabibbo suppressed amplitudes and phases.  Using the
amplitudes and phases we estimate the integrated CP asymmetry.  In
addition, we will give preliminary results on the amplitudes, x and
y, that describe on-shell and off-shell
D0-D0bar mixing.