Motivated by the polarization anomaly in the B→ (1020)K*(892) decay, we extend our search for other K* final states in the decay B0→ (1020)K*0 with the K*0→K+π- invariant mass above 1.6 GeV. The final states considered include the K*(1680)0, K3*(1780)0, K4*(2045)0, and a Kπ spin-zero nonresonant component. We also search for B0→ D̄0 decay with the same final state. The analysis is based on a sample of about 384×106 BB̄ pairs recorded with the BABAR detector. We place upper limits on the branching fractions B(B0→ K*(1680)0)<3.5×10-6, B(B0→ K3*(1780)0) <2.7×10-6, B(B0→ K4*(2045)0)<15.3×10-6, and B(B0→ D̄0)<11.7×10-6 at 90% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Search for B0→ (K+π-) decays with large K+π- invariant mass. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(5) [10.1103/PhysRevD.76.051103].

Search for B0→ (K+π-) decays with large K+π- invariant mass

CARPINELLI, Massimo;
2007

Abstract

Motivated by the polarization anomaly in the B→ (1020)K*(892) decay, we extend our search for other K* final states in the decay B0→ (1020)K*0 with the K*0→K+π- invariant mass above 1.6 GeV. The final states considered include the K*(1680)0, K3*(1780)0, K4*(2045)0, and a Kπ spin-zero nonresonant component. We also search for B0→ D̄0 decay with the same final state. The analysis is based on a sample of about 384×106 BB̄ pairs recorded with the BABAR detector. We place upper limits on the branching fractions B(B0→ K*(1680)0)<3.5×10-6, B(B0→ K3*(1780)0) <2.7×10-6, B(B0→ K4*(2045)0)<15.3×10-6, and B(B0→ D̄0)<11.7×10-6 at 90% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2007
76
5
051103
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Search for B0→ (K+π-) decays with large K+π- invariant mass. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(5) [10.1103/PhysRevD.76.051103].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389708
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