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PreprintCC BY 4.0arXiv

Electromagnetic structure of charged and neutral strange vector mesons

  • Parada T. P. Hutauruk
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Abstract

We investigate the electromagnetic form factors of the charged K*+(892) (us̅) and neutral K0(896) (ds̅) strange vector mesons within the covariant Nambu--Jona-Lasinio model, employing the Schwinger proper-time regularization scheme to regularize ultraviolet divergences while incorporating the QCD aspect of quark confinement. To this end, we evaluate the charge (electric) GC(Q2), magnetic GM(Q2), and quadrupole GQ(Q2) form factors, as well as the charge radii, of the charged K+(892) and neutral K0(896) strange vector mesons. We find the charge radii to be ⟨ r2 ⟩K+ = 0.45 fm2 and ⟨ r2 ⟩K0 = −0.04 fm2, respectively, while the corresponding magnetic moments are μK+ = 2.67,μN and μK*0 = 0.032,μN. These results are consistent with other theoretical calculations and lattice QCD simulations.

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Cite

BibTeXRIS
BibTeX
@misc{hutauruk2026electromagnetic,
  title = {{Electromagnetic structure of charged and neutral strange vector mesons}},
  author = {Parada T. P. Hutauruk},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.24661},
  eprint = {2607.24661},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.24661},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Electromagnetic structure of charged and neutral strange vector mesons
AU  - Parada T. P. Hutauruk
PY  - 2026
DA  - 2026/09/08
PB  - arXiv
DO  - 10.48550/arxiv.2607.24661
UR  - https://arxiv.org/abs/2607.24661
AB  - We investigate the electromagnetic form factors of the charged K^*+(892) (us̅) and neutral K^0(896) (ds̅) strange vector mesons within the covariant Nambu--Jona-Lasinio model, employing the Schwinger proper-time regularization scheme to regularize ultraviolet divergences while incorporating the QCD aspect of quark confinement. To this end, we evaluate the charge (electric) G_C(Q^2), magnetic G_M(Q^2), and quadrupole G_Q(Q^2) form factors, as well as the charge radii, of the charged K^+(892) and neutral K^0(896) strange vector mesons. We find the charge radii to be ⟨ r^2 ⟩_K^+ = 0.45 fm^2 and ⟨ r^2 ⟩_K^0 = −0.04 fm^2, respectively, while the corresponding magnetic moments are μ_K^+ = 2.67,μ_N and μ_K^*0 = 0.032,μ_N. These results are consistent with other theoretical calculations and lattice QCD simulations.
ER  -