TY - JOUR
T1 - Limits on D⁰ - anti-D⁰ mixing and CP violation from the ratio of lifetimes for decay to K⁻π⁺, K⁻ K⁺ and π⁻π⁺
AU - Aubert, B
AU - Ford, Kelly
AU - Harrison, Theresa
AU - Hawkes, Christopher
AU - Knowles, David
AU - Morgan, Sian
AU - Penny, Richard
AU - Watson, Alan
AU - Watson, Nigel
PY - 2003/9/1
Y1 - 2003/9/1
N2 - We present a measurement of D0-macro D0 mixing parameters using the ratios of lifetimes extracted from samples of D0 mesons decaying to K-pi(+), K-K+, and pi(-)pi(+). Using 91 fb(-1) of data collected by the BABAR detector at the PEP-II asymmetric-energy B Factory, we obtain a value Y=[0.8+/-0.4(stat.)(+0.5)(-0.4)(syst.)]%, which, in the limit of CP conservation, corresponds to the mixing parameter y=Delta Gamma/2 Gamma. Using the difference in lifetimes of D0 and macro D0 mesons, we obtain the CP-violation parameter Delta Y=[-0.8+/-0.6(stat.)+/-0.2(syst.)]%.
AB - We present a measurement of D0-macro D0 mixing parameters using the ratios of lifetimes extracted from samples of D0 mesons decaying to K-pi(+), K-K+, and pi(-)pi(+). Using 91 fb(-1) of data collected by the BABAR detector at the PEP-II asymmetric-energy B Factory, we obtain a value Y=[0.8+/-0.4(stat.)(+0.5)(-0.4)(syst.)]%, which, in the limit of CP conservation, corresponds to the mixing parameter y=Delta Gamma/2 Gamma. Using the difference in lifetimes of D0 and macro D0 mesons, we obtain the CP-violation parameter Delta Y=[-0.8+/-0.6(stat.)+/-0.2(syst.)]%.
U2 - 10.1103/PhysRevLett.91.121801
DO - 10.1103/PhysRevLett.91.121801
M3 - Article
C2 - 14525353
SN - 1079-7114
VL - 91
SP - 121801
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
ER -