Using e+e− annihilation data corresponding to a total integrated luminosity of 6.32 fb−1 collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis of the decay Ds+ → K−K+π+π+π− and determine the relative fractions and phases of different intermediate processes. Absolute branching fraction of Ds+→ K−K+π+π+π− decay is measured to be (6.60 ± 0.47stat.± 0.38syst.) × 10−3. The dominant intermediate process is Ds+→ a1(1260)+ϕ, ϕ → K−K+, a1(1260)+→ ρπ+, ρ → π+π−, with a branching fraction of (5.15 ± 0.41stat.± 0.32syst.) × 10−3

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

I. Garzia;M. Scodeggio;
2022

Abstract

Using e+e− annihilation data corresponding to a total integrated luminosity of 6.32 fb−1 collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis of the decay Ds+ → K−K+π+π+π− and determine the relative fractions and phases of different intermediate processes. Absolute branching fraction of Ds+→ K−K+π+π+π− decay is measured to be (6.60 ± 0.47stat.± 0.38syst.) × 10−3. The dominant intermediate process is Ds+→ a1(1260)+ϕ, ϕ → K−K+, a1(1260)+→ ρπ+, ρ → π+π−, with a branching fraction of (5.15 ± 0.41stat.± 0.32syst.) × 10−3
2022
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, O.; Bal...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2505596
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