Study of the $D^+_s \to π^- π^+ π^+$ decay and measurement of $f_0$ masses and widths

Details Study of the $D^+_s \to π^- π^+ π^+$ decay and measurement of $f_0$ masses and widths Study of the $D^+_s \to π^- π^+ π^+$ decay and measurement of $f_0$ masses and widths

2000-07-14

arxiv.org/abs/hep-ex/0007027v2

Phys.Rev.Lett.86:765-769,2001

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 3 eps figures

Scientific paper

10.1103/PhysRevLett.86.765

From a sample of 848 $\pm$ 44 $D_s^+ \to \pi^- \pi^+ \pi^+$ decays, we find $\Gamma(D_s^+ \to \pi^- \pi^+ \pi^+) / \Gamma(D_s^+ \to \phi \pi^+) = 0.245 \pm 0.028^{+0.019}_{-0.012} $. Using a Dalitz plot analysis of this three body decay, we find significant contributions from the channels $\rho^0(770)\pi^+$, $\rho^0(1450)\pi^+$, $f_0(980)\pi^+$, $f_2(1270)\pi^+$, and $f_0(1370)\pi^+$. We present also the values obtained for masses and widths of the resonances $f_0(980)$ and $f_0(1370)$.

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