Vector-Tensor and Vector-Vector Decay Amplitude Analysis of ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\varphi}{K}^{*0}$

Vector-Tensor and Vector-Vector Decay Amplitude Analysis of $B^{0} \to φ K^{* 0}$

B. Aubert et al. (The BABAR Collaboration)

Phys. Rev. Lett. 98, 051801 – Published 30 January 2007

Abstract

We perform an amplitude analysis of the decays $B^{0} \to ϕ K_{2}^{*} (1430)^{0}$ , $ϕ K^{*} (892)^{0}$ , and $ϕ (K π)_{S − wave}^{0}$ with a sample of about $384 \times 10^{6}$ $B \bar{B}$ pairs recorded with the BABAR detector. The fractions of longitudinal polarization $f_{L}$ of the vector-tensor and vector-vector decay modes are measured to be ${0.853}_{- 0.069}^{+ 0.061} \pm 0.036$ and $0.506 \pm 0.040 \pm 0.015$ , respectively. Overall, twelve parameters are measured for the vector-vector decay and seven parameters for the vector-tensor decay, including the branching fractions and parameters sensitive to $C P$ violation.