Work

Scalar-glueball-mediated scale-anomaly dominance of the confining pressure of the pion in holographic QCD

Year: 2025

Type: article

Abstract: In this work, we analyze the energy density and the stress distribution inside the pion derived from gravitational form factors in top-down holographic QCD. In particular, we show that the dominance of the scale anomaly in the confining pressure, previously observed in the instant form for the nucleon, also holds for the pion in the light-front form. Furthermore, we find that in large- N c QCD described by this approach, the scalar glueball plays a mediating role in transmitting the confining pressure. These findings support the universal role of the scale anomaly in the stability of hadrons.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/2ngy-t5zp

Authors: Daisuke Fujii, Akihiro Iwanaka, Mitsuru Tanaka

Institutions: Advanced Science Research Center, The University of Osaka, Kyoto University, Nagoya University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Osaka University, Japan Society for the Promotion of Science

Awards: G4211711930, New frontier of QCD and hadron physics pioneered by stress distribution inside hadrons extracted from gravitational form factors, G7795497695