Measurement of the Born cross section for e⁺e^-→ ηh_c at center-of-mass energies between 4.1 and 4.6 GeV

2024/04/10 by BESIII Collaboration, М. Н. Ачасов, Ablikim, M. +737
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2404.06718

openalex publication_date 2024/04/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We measure the Born cross section for the reaction e⁺e^- → ηh_c from √(s) = 4.129 to 4.600~GeV using data sets collected by the BESIII detector running at the BEPCII collider. A resonant structure in the cross section line shape near 4.200~GeV is observed with a statistical significance of 7σ. The parameters of this resonance are measured to be \MeasMass and \MeasWidth, where the first uncertainties are statistical and the second systematic.

Related

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