Strong vertex $N N ρ$ in dense medium

Abstract

We investigate the strong coupling form factors associated with the NNρ interaction vertex in nuclear matter using the QCD sum rule framework. These form factors are calculated incorporating the in-medium modifications of the relevant condensates and operators into the operator product expansion (OPE) for the first time. We analyze the behavior of the strong form factors as functions of the momentum transfer squared and density of medium and evaluate the corresponding strong couplings at the on-shell point of the ρ meson at nuclear saturation density. Then we extend the analyses to get information at higher densities. Our results provide complementary information on the in-medium NNρ interaction and may be useful for phenomenological, experimental and observational studies of dense hadronic matter.

Effective Fermion-Photon Vertex in a Rotating Relativistic Medium: Tree-Level Structure
Jorge David Castaño-Yepes, Alejandro Ayala, J. E. Martínez-Herrera +1
arXiv13 Oct 2026PreprintarXiv licenceFull textHigh-energy & particle physicsarXiv
An Extended Chiral Mean-Field Model with Medium-Modified Thermal Mesons for Hot and Dense Hadronic Matter
Micheal Kahangirwe, Rajesh Kumar, Joaquin Grefa +5
arXiv15 Sep 2026PreprintCC BY-NC-ND 4.0Full textNuclear physicsarXiv
Dense and Cold Magnetized Quark Matter: A Review of Magnetic-Field-Independent Regularization and the Medium Separation Scheme
Francisco X. Azeredo, Dyana C. Duarte, Ricardo L. S. Farias +3
arXiv20 Sep 2026PreprintCC BY 4.0Full textHigh-energy & particle physics Nuclear physicsarXiv
Hot and dense medium effects on the B_s^* and B^* multiplets
K. Azizi, N. Er, J. Y. Süngü
arXiv8 Oct 2026PreprintCC BY 4.0Full textHigh-energy & particle physicsarXiv
Quasiparticle Modeling of Strange Quark Stars with In-Medium QCD Effects at Finite Temperature and Strong Magnetic Fields
Yogesh Kumar, Mihir Arora, Manas Lohani +3
arXiv27 Oct 2026PreprintCC BY-NC-ND 4.0Full textHigh-energy astrophysics Solar & stellar physicsarXiv

Cite

BibTeX RIS

BibTeX

@misc{tousi2026strong,
  title = {{Strong vertex $N N ρ$ in dense medium}},
  author = {M. Shekari Tousi and K. Azizi},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.02770},
  eprint = {2611.02770},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.02770},
  note = {CC BY 4.0},
}

RIS

TY  - UNPB
TI  - Strong vertex $N N ρ$ in dense medium
AU  - M. Shekari Tousi
AU  - K. Azizi
PY  - 2026
DA  - 2026/11/02
PB  - arXiv
DO  - 10.48550/arxiv.2611.02770
UR  - https://arxiv.org/abs/2611.02770
AB  - We investigate the strong coupling form factors associated with the NNρ interaction vertex in nuclear matter using the QCD sum rule framework. These form factors are calculated incorporating the in-medium modifications of the relevant condensates and operators into the operator product expansion (OPE) for the first time. We analyze the behavior of the strong form factors as functions of the momentum transfer squared and density of medium and evaluate the corresponding strong couplings at the on-shell point of the ρ meson at nuclear saturation density. Then we extend the analyses to get information at higher densities. Our results provide complementary information on the in-medium NNρ interaction and may be useful for phenomenological, experimental and observational studies of dense hadronic matter.
ER  -

Abstract

Related

Cite