We present results of a search for CP violation in B0- Bbar0 mixing with the BABAR detector. We select a sample of B0→D*−Xℓ+ν decays with a partial reconstruction method and use kaon tagging to assess the flavor of the other B meson in the event. We determine the CP violating asymmetry CP≡[N(B0B0)−N(Bbar0Bbar0)]/[N(B0B0)+N(Bbar0Bbar0)]=(0.06±0.17+0.38−0.32)%, corresponding to ΔCP=1−|q/p|=(0.29±0.84+1.88−1.61)×10−3.
Search for CP Violation in B-0-(B-0)over bar Mixing Using Partial Reconstruction of B-0 -> D*(-)Xl(+)nu(l) and a Kaon Tag
CONTRI, ROBERTO;GUIDO, ELISA;LO VETERE, MAURIZIO;MONGE, MARIA ROBERTA;
2013-01-01
Abstract
We present results of a search for CP violation in B0- Bbar0 mixing with the BABAR detector. We select a sample of B0→D*−Xℓ+ν decays with a partial reconstruction method and use kaon tagging to assess the flavor of the other B meson in the event. We determine the CP violating asymmetry CP≡[N(B0B0)−N(Bbar0Bbar0)]/[N(B0B0)+N(Bbar0Bbar0)]=(0.06±0.17+0.38−0.32)%, corresponding to ΔCP=1−|q/p|=(0.29±0.84+1.88−1.61)×10−3.
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