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  • Open Access

Newly observed κ(2600) and the highly excited states of the K0* family

Cheng-Qun Pang1,2,*, Hao Chen3, and Yun-Hai Zhang4,†

  • 1School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264000, China
  • 2Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou, Gansu 730000, China
  • 3College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810000, China
  • 4College of Physics and Electronic Engineering, Heze University, Heze 274015, China

  • *Contact author: xuehua45@163.com
  • †Contact author: wlxzyh@163.com
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Phys. Rev. D 112, 036017 – Published 28 August, 2025

DOI: https://doi.org/10.1103/ts1p-slwp

Abstract

We conducted a study using the modified Godfrey-Isgur quark model and quark pair creation model to investigate the spectrum and two-body strong decays of the newly discovered κ(2600) resonance by the LHCb collaboration. Our analysis revealed that this resonance can be assigned as the fourth radial excitation within the 0+ light strange meson family. Furthermore, we predicted additional radial excitations in this meson family and systematically discussed their spectra, decay behaviors, and branching ratios. These results provide critical guidance for future to identify their signatures in experiments.

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Phys. Rev. D 112, 036017– Published 28 August, 2025
  • Received 22 April 2025
  • Accepted 24 July 2025
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