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- Title
Amplitude analysis and branching fraction measurement of the decay Ds+→ K<sup>+</sup>π<sup>+</sup>π<sup>−</sup>π<sup>0</sup>.
- Authors
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, X. H.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Balossino, I.; Ban, Y.; Batozskaya, V.; Becker, D.; Begzsuren, K.; Berger, N.; Bertani, M.; Bettoni, D.
- Abstract
The singly Cabibbo-suppressed decay D s + → K+π+π−π0 is observed by using a data set corresponding to an integrated luminosity of 6.32 fb−1 recorded by the BESIII detector at the centre-of-mass energies between 4.178 and 4.226 GeV. The first amplitude analysis of D s + → K+π+π−π0 reveals the sub-structures in this decay and determines the fractions and relative phases of different intermediate processes. The dominant intermediate process is D s + → K*0ρ+, with a fit fraction of (40.5 ± 2.8stat. ± 1.5syst.)%. With the detection efficiency based on our amplitude analysis, the absolute branching fraction for D s + → K+π+π−π0 is measured to be (9.75 ± 0.54stat.± 0.17syst.) × 10−3.
- Subjects
LUMINOSITY; DETECTORS; MEASUREMENT; FRACTIONS; RESONANCE; PHYSICS
- Publication
Journal of High Energy Physics, 2022, Vol 2022, Issue 9, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP09(2022)242