2024/11/27 by Zhongyu Wang, Wei Liang, Wang, Zhong-Yu +1
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2411.18134
openalex publication_date 2024/11/27 · openalex created_date 2024/12/05 · openalex updated_date 2026/07/28
With the recent measurements of the Ds+→ π+π+π- and D+→ π+π+π- decays by the LHCb Collaboration, we study these two decay processes by considering the final state interaction formalism. Taking into account the external and internal W-emission dominant mechanisms at the quark level, our model can naturally explain why the Ds+ decay only has a contribution from the f0(980) resonance, while the D+ decay has contributions from both the f0(500) and f0(980) states. The magnitudes and phases of π+π- for S-wave amplitudes in our model are in agreement with the experimental measurements. These results support the interpretations of f0(500) and f0(980) as the ππ and KK resonances, respectively, where they are dynamically generated from the S-wave pseudoscalar-pseudoscalar meson interactions within the chiral unitary approach.