Contributions of K0∗(1430) and K0∗(1950) in the three-body decays B → Kπh

A bstract We study the contributions of the resonant states K 0 ∗ (1430) and K 0 ∗ (1950) in the three-body decays B → Kπh (with h = π, K ) in the perturbative QCD approach. The crucial nonperturbative input F Kπ ( s ) in the distribution amplitudes of the S -wave Kπ system is derived from the matri...

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Veröffentlicht in:The journal of high energy physics 2020-03, Vol.2020 (3)
Hauptverfasser: Wang, Wen-Fei, Chai, Jian, Ma, Ai-Jun
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Sprache:eng
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Zusammenfassung:A bstract We study the contributions of the resonant states K 0 ∗ (1430) and K 0 ∗ (1950) in the three-body decays B → Kπh (with h = π, K ) in the perturbative QCD approach. The crucial nonperturbative input F Kπ ( s ) in the distribution amplitudes of the S -wave Kπ system is derived from the matrix element of vacuum to Kπ pair. The C P averaged branching fraction of the quasi-two-body decay process B → K 0 ∗ (1950) h → Kπh is about one order smaller than that of the corresponding decay B → K 0 ∗ (1430) h → Kπh . In view of the important contribution from the S -wave Kπ system for the B → Kπh decays, it is not appropriate to neglect the K 0 ∗ (1950) in the theoretical or experimental studies for the relevant three-body B meson decays. The predictions in this work for the relevant decays are consistent with the existing experimental data.
ISSN:1029-8479
DOI:10.1007/JHEP03(2020)162