Amplitude analysis and branching fraction measurement of $$D_s^+$$ →$K^–K^+π^+π^+π^–$
Journal Article
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· Journal of High Energy Physics (Online)
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- Institute of High Energy Physics, Beijing (China). BESIII Collaboration. et al.; The BESIII Collaboration
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 $$D_s^+$$ →$K^–K^+π^+π^+π^–$ and determine the relative fractions and phases of different intermediate processes. Absolute branching fraction of $$D_s^+$$ →$K^–K^+π^+π^+π^–$ decay is measured to be (6.60 ± 0.47stat. ± 0.38syst.) x 10–3. The dominant intermediate process is $$D_s^+$$ → $$a_1$$(1260)+$$\phi, \phi$$ → $$K^–K^+ a_1$$(1260)+ → $ρπ^+$, $ρ → π^+π^–$, with a branching fraction of (5.15 ± 0.41stat. ± 0.32syst.) x 10–3.
- Research Organization:
- Indiana University, Bloomington, IN (United States); University of Minnesota, Minneapolis, MN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- BESIII collaboration
- Grant/Contract Number:
- FG02-05ER41374; SC0012069
- OSTI ID:
- 1976496
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 7 Vol. 2022; ISSN 1029-8479
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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