Dissecting a strongly coupled scalar nucleon

Cao, Xianghui; Li, Yang; Vary, James P.

doi:10.1103/PhysRevD.110.076025

Dissecting a strongly coupled scalar nucleon

Journal Article · Thu Oct 24 00:00:00 EDT 2024 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.110.076025· OSTI ID:2474059

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We continue our investigation of the stress within a strongly coupled scalar nucleon, and now dissect the gravitational form factors into contributions from its constituents, the (mock) nucleon and the (mock) pion. The computation is based on a nonperturbative solution of the scalar Yukawa model in the light-front Hamiltonian formalism with a Fock sector expansion, including up to one nucleon and two pions. By employing the “good currents” $T_{i}^{+ +}$ , $T_{i}^{+ -}$ and $T_{i}^{12}$ , we extract the full set of gravitational form factors $A_{i}$ , $D_{i}$ , ${\bar{c}}_{i}$ without the contamination of the spurious form factors and free of uncanceled UV divergences. With these results, we decompose the mass of the system into its constituents and compute the matter and mechanical radii, gaining insights into the strongly coupled system.

Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0023692

OSTI ID:: 2474059

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 7 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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