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Ablikim, M.; Adlarson, Patrik; Ikegami Andersson, Walter; Johansson, Tord; Kupsc, Andrzej; Pettersson, Joachim; Schönning, Karin; Thorén, Viktor; Wolke, Magnus; Zou, J. H.
The journal of high energy physics, 2021 6Journal Article
By using 6.32 fb(-1) of data collected with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we perform an amplitude analysis of the decay D-s(+) -> K-S(0) pi(+)pi(0) and determine the relative fractions and phase differences of different intermediate processes, which include K-S(0) rho(770)(+), K-S(0)rho(1450)(+), K*(892)(0) pi(+), K* (892)(+) pi(0), and K* (1410)(0) pi(+). With the detection efficiency based on the amplitude analysis results, the absolute branching fraction is measured to be B(D-s(+) -> K-S(0) pi(+) pi(0)) = (5.43 +/- 0.30(stat) +/- 0.15(syst)) x 10(-3).
