We present a study of the decays B0→D0K*0 and B0→D̄0K*0 with K*0→K+π-. The D0 and the D̄0 mesons are reconstructed in the final states f=K+π-, K+π-π0, K+π-π+π-, and their charge conjugates. Using a sample of 465×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure the ratio RADS[Γ(B̄0→[f] DK̄*0)+Γ(B0→[f̄]DK*0)]/[Γ(B̄0→ [f̄]DK̄*0)+Γ(B0→[f]DK*0)] for the three final states. We do not find significant evidence for a signal and set the following limits at 95% probability: RADS(Kπ)<0.244, RADS(Kππ0)<0.181, and RADS(Kπππ)<0.391. From the combination of these three results, we find that the ratio rS between the b→u and the b→c amplitudes lies in the range [0.07,0.41] at 95% probability. © 2009 The American Physical Society.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Search for b→u transitions in B0→D0K*0 decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 80(3), 1-9 [10.1103/PhysRevD.80.031102].

Search for b→u transitions in B0→D0K*0 decays

PATRIGNANI, CLAUDIA;
2009

Abstract

We present a study of the decays B0→D0K*0 and B0→D̄0K*0 with K*0→K+π-. The D0 and the D̄0 mesons are reconstructed in the final states f=K+π-, K+π-π0, K+π-π+π-, and their charge conjugates. Using a sample of 465×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure the ratio RADS[Γ(B̄0→[f] DK̄*0)+Γ(B0→[f̄]DK*0)]/[Γ(B̄0→ [f̄]DK̄*0)+Γ(B0→[f]DK*0)] for the three final states. We do not find significant evidence for a signal and set the following limits at 95% probability: RADS(Kπ)<0.244, RADS(Kππ0)<0.181, and RADS(Kπππ)<0.391. From the combination of these three results, we find that the ratio rS between the b→u and the b→c amplitudes lies in the range [0.07,0.41] at 95% probability. © 2009 The American Physical Society.
2009
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Search for b→u transitions in B0→D0K*0 decays. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 80(3), 1-9 [10.1103/PhysRevD.80.031102].
Aubert, B; Bona, M.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Lopez, L.; Palano...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/547818
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