Dalitz Plot Analysis of Ds to K+K-pi+

TL;DR

This paper presents a detailed Dalitz plot analysis of the decay Ds to K+K-pi+ using CLEO-c data, revealing the necessity of including an f_0(1370)pi+ contribution for accurate modeling.

Contribution

It introduces an improved decay model for Ds to K+K-pi+ by incorporating the f_0(1370) resonance, enhancing previous analyses.

Findings

Good agreement with data achieved by including f_0(1370)pi+

Measured magnitudes and phases for multiple resonant contributions

Limited possible contributions of other KK and Kpi resonances

Abstract

We perform a Dalitz plot analysis of the decay Ds to K+K-pi+ with the CLEO-c data set of 586/pb of e+e- collisions accumulated at sqrt(s) = 4.17 GeV. This corresponds to about 0.57 million D_s+D_s(*)- pairs from which we select 14400 candidates with a background of roughly 15%. In contrast to previous measurements we find good agreement with our data only by including an additional f_0(1370)pi+ contribution. We measure the magnitude, phase, and fit fraction of K*(892) K+, phi(1020)pi+, K0*(1430)K+, f_0(980)pi+, f_0(1710)pi+, and f_0(1370)pi+ contributions and limit the possible contributions of other KK and Kpi resonances that could appear in this decay.