Speaker
Adrian Bevan
(University of London (GB))
Description
Time-dependent CP asymmetry measurements in D to h^+h^- decays, where h=pi or rho
can be used to constrain the angle beta_c of the cu unitarity triangle up to theoretical
uncertainties. Here we discuss the theoretical uncertainty from penguin contributions
that can be mitigated through the use of isospin analyses. We show that uncertainty from
penguin pollution on a measurement of beta_c in D^0 to pi^+pi^-$ (rho^+rho^-) decays
is 2.7 deg (4.6 deg). We also comment on the applicability of this method to rho pi decays.
Primary author
Adrian Bevan
(University of London (GB))
Co-author
Brian Meadows
(University of Cincinnati (US))
