17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Bounding hadronic uncertainties in c to u decays

18 Jul 2013, 14:30
D1 (KTH Campus)


KTH Campus

Talk presentation Flavour Physics and Fundamental Symmetries Flavour Physics and fundamental symmetries


Adrian Bevan (University of London (GB))


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))


Brian Meadows (University of Cincinnati (US))

Presentation Materials