In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 4 ( 2022-04-08)
Abstract:
Using data collected with the BESIII detector in e + e − collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb − 1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the $$ {D}_s^{+} $$ D s + → π + π 0 η ′ decay. We find that the dominant intermediate process is $$ {D}_s^{+} $$ D s + → ρ + η ′ and the significances of other resonant and nonresonant processes are all less than 3 σ . The upper limits on the branching fractions of S -wave and P -wave nonresonant components are set to 0.10% and 0.74% at the 90% confidence level, respectively. In addition, the branching fraction of the $$ {D}_s^{+} $$ D s + → π + π 0 η ′ decay is measured to be (6 . 15 ± 0 . 25(stat . ) ± 0 . 18(syst . ))%, which receives significant contribution only from $$ {D}_s^{+} $$ D s + → ρ + η ′ according to the amplitude analysis.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP04(2022)058
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2027350-2