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) |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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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. |
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ISSN: | 1029-8479 |
DOI: | 10.1007/JHEP03(2020)162 |