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

Motivated by the polarization anomaly in the B→ϕ(1020)K*(892) decay, we extend our search for other K* final states in the decay B0→ϕ(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→ϕD̅ 0 decay with the same final state. The analysis is based on a sample of about 384×106 BB̅ pairs recorded with the BABAR detector. We place upper limits on the branching fractions B(B0→ϕK*(1680)0)<3.5×10-6, B(B0→ϕK3*(1780)0)<2.7×10-6, B(B0→ϕK4*(2045)0)<15.3×10-6, and B(B0→ϕD̅ 0)<11.7×10-6 at 90% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.