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 B-0 ->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), K-3({*})(1780)(0), K-4({*})(2045)(0), and a K pi spin-zero nonresonant component. We also search for B-0 ->phi(D) over bar (0) decay with the same final state. The analysis is based on a sample of about 384x10(6) B (B) over bar pairs recorded with the BABAR detector. We place upper limits on the branching fractions B(B-0 ->phi K-{*}(1680)(0))< 3.5x10(-6), B(B-0 ->phi K-3({*})(1780)(0))< 2.7x10(-6), B(B-0 ->phi K-4({*})(2045)(0))< 15.3x10(-6), and B(B-0 ->phi(D) over bar (0))< 11.7x10(-6) at 90\% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.
Search for B-0 ->phi(K+pi(-)) decays with large K+pi(-) invariant mass
BIANCHI, Fabrizio;GAMBA, Diego;
2007-01-01
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 B-0 ->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), K-3({*})(1780)(0), K-4({*})(2045)(0), and a K pi spin-zero nonresonant component. We also search for B-0 ->phi(D) over bar (0) decay with the same final state. The analysis is based on a sample of about 384x10(6) B (B) over bar pairs recorded with the BABAR detector. We place upper limits on the branching fractions B(B-0 ->phi K-{*}(1680)(0))< 3.5x10(-6), B(B-0 ->phi K-3({*})(1780)(0))< 2.7x10(-6), B(B-0 ->phi K-4({*})(2045)(0))< 15.3x10(-6), and B(B-0 ->phi(D) over bar (0))< 11.7x10(-6) at 90\% C.L. The nonresonant contribution is consistent with the measurements in the lower invariant mass range.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.