Role of the scalar in the process *
Han Zhang, Yun-He Lyu, Li‐Juan Liu, En Wang
Abstract
Abstract Based on BESIII measurements of the reaction , we investigate this process by considering the S -wave pseudoscalar-pseudoscalar interaction within the unitary chiral approach and the contributions from the intermediate resonances and . Our calculation can reasonably reproduce the experimental data, and our results imply that , which is dynamically generated from the S -wave pseudoscalar-pseudoscalar interaction, plays an important role in this process, and the contributions from the intermediate resonances and are also necessary. More precise measurements of this process in future can shed light on the nature of and .
Topics & Concepts
PhysicsPseudoscalarParticle physicsScalar (mathematics)Unitary statePartial wave analysisProcess (computing)PionMesonLawComputer scienceMathematicsPolitical scienceGeometryOperating systemQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions Research