Electromagnetic structure of strange vector mesons in nuclear medium
Abstract
We investigate the in-medium modifications of the charge (electric) GC*(Q2), magnetic GM*(Q2), and quadrupole GQ*(Q2) form factors of the positively charged vector meson K*+ in symmetric nuclear matter at zero temperature within the Schwinger proper-time Nambu-Jona-Lasinio (NJL) model. In this framework, both the nuclear medium effects and the electromagnetic structure of the K*+ meson are described consistently in the NJL model at the quark level. We find that the charge, magnetic, and quadrupole form factors are suppressed with increasing nuclear density, indicating substantial in-medium modifications of the strange vector meson's internal structure. We further obtain a charge radius of rK*+*=0.74 fm at normal nuclear density, which is slightly smaller than the corresponding value for the ρ+ meson, rρ+*≃0.75 fm.
Related
- Electromagnetic structure of charged and neutral strange vector mesons
- Probing the Electromagnetic Structure of Heavy-Light Hybrid Mesons with Vector and Axial-Vector Quantum Numbers
- Medium effect on spin alignment of strange and charm vector mesons
- Electromagnetic form factors of vector mesons in Einstein-dilaton holographic QCD
- Higher excited charmed and charmed-strange mesons in an unquenched quark model
BibTeX
@misc{hutauruk2026electromagnetic,
title = {{Electromagnetic structure of strange vector mesons in nuclear medium}},
author = {Parada T. P. Hutauruk and Terry Mart and Kazuo Tsushima},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.06938},
eprint = {2609.06938},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.06938},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Electromagnetic structure of strange vector mesons in nuclear medium
AU - Parada T. P. Hutauruk
AU - Terry Mart
AU - Kazuo Tsushima
PY - 2026
DA - 2026/09/07
PB - arXiv
DO - 10.48550/arxiv.2609.06938
UR - https://arxiv.org/abs/2609.06938
AB - We investigate the in-medium modifications of the charge (electric) G_C^*(Q^2), magnetic G_M^*(Q^2), and quadrupole G_Q^*(Q^2) form factors of the positively charged vector meson K^*+ in symmetric nuclear matter at zero temperature within the Schwinger proper-time Nambu-Jona-Lasinio (NJL) model. In this framework, both the nuclear medium effects and the electromagnetic structure of the K^*+ meson are described consistently in the NJL model at the quark level. We find that the charge, magnetic, and quadrupole form factors are suppressed with increasing nuclear density, indicating substantial in-medium modifications of the strange vector meson's internal structure. We further obtain a charge radius of r_K^*+^*=0.74 fm at normal nuclear density, which is slightly smaller than the corresponding value for the ρ^+ meson, r_ρ^+^*≃0.75 fm.
ER -