Dalitz Plot Analysis of the D+ --> pi- pi+ pi+ Decay

Details Dalitz Plot Analysis of the D+ --> pi- pi+ pi+ Decay Dalitz Plot Analysis of the D+ --> pi- pi+ pi+ Decay

2007-04-30

arxiv.org/abs/0704.3954v2

Phys.Rev.D76:012001,2007

Physics

High Energy Physics

High Energy Physics - Experiment

31 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2007/

Scientific paper

10.1103/PhysRevD.76.012001

Using 281 pb^{-1} of data recorded by the CLEO-c detector in e^+e^- collisions at the psi(3770), corresponding to 0.78 million D^+D^- pairs, we investigate the substructure of the decay D^+ to pi^- pi^+ pi^+ using the Dalitz plot technique. We find that our data are consistent with the following intermediate states: rho(770)pi^+, f_2(1270)pi^+, f_0(1370)pi^+, f_0(1500)pi^+, f_0(980) pi^+, and sigma pi^+. We confirm large S wave contributions at low pi pi mass. We set upper limits on contributions of other possible intermediate states. We consider three models of the pi pi S wave and find that all of them adequately describe our data.

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