Scalar and vector form factors of the in-medium nucleon

2003/07/31 by K. Saito, Kenji Saito, K. Tsushima · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1016/j.physletb.2003.09.055

published as Phys.Lett. B575 (2003) 4-10 · 13 pages, 2 figures, references are up dated

openalex publication_date 2003/10/16 · arxiv created 2003/11/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Using the quark–meson coupling model, we calculate the form factors at σ- and ω-nucleon strong-interaction vertices in nuclear matter. The Peierls–Yoccoz projection technique is used to take account of center of mass and recoil corrections. We also apply the Lorentz contraction to the internal quark wave function. The form factors are reduced by the nuclear medium relative to those in vacuum. At normal nuclear matter density and Q2=1GeV2, the reduction rate in the scalar form factor is about 15%, which is almost identical to that in the vector one. We parameterize the ratios of the form factors in symmetric nuclear matter to those in vacuum as a function of nuclear density and momentum transfer.

Cited by

• Quark–meson coupling model with the cloudy bag
• Nucleon and hadron structure changes in the nuclear medium and the impact on observables

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