# Search for $B^0 \to \phi K^+ \pi^-$ Decays with Large $K^+ pi^-$ Invariant Mass

Abstract : Motivated by the polarization anomaly in the B->phi(1020)K*(892) decay, we extend our search for other K* final states in the decay B0->phi(1020)K^*0 with the K*0->K+pi- invariant mass above 1.6 GeV. The final states considered include the K*(1680)0, K3*(1780)0, K4*(2045)0, and a Kpi spin-zero nonresonant component. We also search for B0->phiDbar0 decay with the same final state. The analysis is based on a sample of about 384 million BBbar pairs recorded with the BABAR detector. We place upper limits on the branching fractions BR(B0->phiK*(1680)0)<3.5*10^-6, BR(B0->phiK3*(1780)0)<2.7*10^-6, BR(B0->phiK4*(2045)0)<15.3*10^-6, and BR(B0->phiDbar0)<11.7*10^-6 at 90% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00149815
Contributor : Claudine Bombar <>
Submitted on : Monday, May 28, 2007 - 4:39:33 PM
Last modification on : Wednesday, September 16, 2020 - 4:21:36 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Search for $B^0 \to \phi K^+ \pi^-$ Decays with Large $K^+ pi^-$ Invariant Mass. Physical Review D, American Physical Society, 2007, 76, pp.051103. ⟨10.1103/PhysRevD.76.051103⟩. ⟨in2p3-00149815⟩

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