TY - JOUR
T1 - Search for D0 - anti-D0 mixing using doubly flavor tagged semileptonic decay modes
AU - Lafferty, George
AU - Barlow, Nicholas
AU - Barlow, Roger
AU - Chia, Yaw
AU - Edgar, Christina
AU - West, Timothy
AU - Yi, Jong
AU - The BaBar Collaboration
PY - 2007
Y1 - 2007
N2 - We have searched for D0−¯¯¯D0 mixing in D*+→π+D0 decays with D0→K(*)eν in a sample of e+e−→c¯c events produced near 10.58 GeV. The charge of the slow pion from charged D∗ decay tags the charm flavor at production, and it is required to be consistent with the flavor of a fully reconstructed second charm decay in the same event. We observe 3 mixed candidates compared to 2.85 background events expected from simulation. We ascribe a 50% systematic uncertainty to this expected background rate. We find a central value for the mixing rate of 0.4×10−4. Using a frequentist method, we set corresponding 68% and 90% confidence intervals at (−5.6,7.4)×10−4 and (−13,12)×10−4, respectively.
AB - We have searched for D0−¯¯¯D0 mixing in D*+→π+D0 decays with D0→K(*)eν in a sample of e+e−→c¯c events produced near 10.58 GeV. The charge of the slow pion from charged D∗ decay tags the charm flavor at production, and it is required to be consistent with the flavor of a fully reconstructed second charm decay in the same event. We observe 3 mixed candidates compared to 2.85 background events expected from simulation. We ascribe a 50% systematic uncertainty to this expected background rate. We find a central value for the mixing rate of 0.4×10−4. Using a frequentist method, we set corresponding 68% and 90% confidence intervals at (−5.6,7.4)×10−4 and (−13,12)×10−4, respectively.
U2 - 10.1103/PhysRevD.76.014018
DO - 10.1103/PhysRevD.76.014018
M3 - Article
SN - 1550-2368
SN - 2470-0029
VL - 76
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 1
M1 - 014018
ER -