Using 6.32 fb-1 of e+e- collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the Ds+→KS0K-π+π+ decays is performed for the first time to determine the intermediate-resonant contributions. The dominant component is the Ds+→K∗(892)+K̄∗(892)0 decay with a fraction of (40.6±2.9stat±4.9sys)%. Our results of the amplitude analysis are used to obtain a more precise measurement of the branching fraction of the Ds+→KS0K-π+π+ decay, which is determined to be (1.46±0.05stat±0.05sys)%.

Amplitude analysis and branching-fraction measurement of Ds+ → KS0 K-π+π+

I. Garzia;M. Scodeggio;
2021

Abstract

Using 6.32 fb-1 of e+e- collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis of the Ds+→KS0K-π+π+ decays is performed for the first time to determine the intermediate-resonant contributions. The dominant component is the Ds+→K∗(892)+K̄∗(892)0 decay with a fraction of (40.6±2.9stat±4.9sys)%. Our results of the amplitude analysis are used to obtain a more precise measurement of the branching fraction of the Ds+→KS0K-π+π+ decay, which is determined to be (1.46±0.05stat±0.05sys)%.
2021
Ablikim, M.; Achasov, M. ???N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. ???R.; An, Q.; Bai, X. ???H.; Bai, Y.; Bakina...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2506000
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