Femtoscopy of the Matter Distribution in the Proton

Autor(es)

Krein, Gastao

• Tipo de documento: Artigo Científico
• Fonte: FEW-BODY SYSTEMS; v. 64, n. 3, p. 7-pg., 2023-06-06.

Resumo

This communication is a follow-up on our previous study [Few Body Syst. 61, 49 (2020)] suggesting the use of femtoscopic measurements of J/?-proton correlation functions in high-energy hadron collisions to access information on the origin of the proton's mass. The QCD multipole expansion allows us to express the J/?-proton scattering amplitude in terms of the product of the J/? chromopolarizability and a scalar gluon gravitational (GFF) form factor. The scalar gluon GFF gives the gluonic contribution to the nucleon mass and determines the corresponding matter radius. We show that J/?-proton femtoscopic correlation function displays clear sensitivity to the scalar gluon GFF for a wide range of the J/? chromopolarizability. (AU)

• Processo FAPESP: 18/25225-9 - Centro de Pesquisa e Análise de São Paulo
• Beneficiário: Sergio Ferraz Novaes
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais