https://doi.org/10.1140/epjc/s10052-018-6238-6
Regular Article - Theoretical Physics
decays in unitarized resonance chiral theory
1
CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China
2
Department of Physics, Indiana University, Bloomington, IN, 47405, USA
3
Center for Exploration of Energy and Matter, Indiana University, Bloomington, IN, 47408, USA
4
Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA, 23606, USA
* e-mail: sgonzalez@itp.ac.cn
Received:
30
July
2018
Accepted:
10
September
2018
Published online:
20
September
2018
We study the hadronic decays within the framework of 
Chiral Perturbation Theory including resonance states and the complete one-loop corrections. The amplitude is projected in partial waves and unitarized by means of the N / D method resumming both the important S- and D-wave 
and the subleading S-wave 
final-state interactions. The participating scalar multiplet mass and coupling strengths are determined from fits to the Dalitz plot experimental data recently released by the A2 collaboration. As a byproduct of our analysis, the associated Dalitz-plot slope parameters are found to be 
, which lie in the ballpark of the current experimental and theoretical determinations.
© The Author(s), 2018
