Pseudoscalar glueball mass: a window on three-gluon interactions

Autor(es)

Souza, E. V. ^{[1, 2]} ; Ferreira, M. N. ^{[3, 4, 1, 5]} ; Aguilar, A. C. ^[1] ; Papavassiliou, J. ^{[3, 4, 5]} ; Roberts, C. D. ^{[6, 7]} ; Xu, S. -S. ^[8]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Inst Phys Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[2] Fed Inst Educ Sci & Technol Piaui, BR-64605500 Picos, Piaui - Brazil

^[3] Univ Valencia, Dept Theoret Phys, E-46100 Valencia - Spain

^[4] Univ Valencia, IFIC, E-46100 Valencia - Spain

^[5] CSIC, Valencia 46100 - Spain

^[6] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu - Peoples R China

^[7] Nanjing Univ, Inst Nonperturbat Phys, Nanjing 210093, Jiangsu - Peoples R China

^[8] Nanjing Univ Posts & Telecommun, Coll Sci, Nanjing 210023 - Peoples R China

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL A; v. 56, n. 1 JAN 28 2020.
• Citações Web of Science: 9

Resumo

In pure-glue QCD, gluon-gluon scattering in the J(PC) = 0(-+) channel is described by a very simple equation, especially if one considers just the leading contribution to the scattering kernel. Of all components in this kernel, only the three-gluon vertex, V-mu nu rho, is poorly constrained by contemporary analyses; hence, calculations of 0(-+) glueball properties serve as a clear window onto the character and form of V-mu nu rho. This is important given that many modern calculations of V-mu nu rho predict the appearance of an infrared suppression in the scalar function which comes to modulate the bare vertex after the nonperturbative resummation of interactions. Such behaviour is a peculiar prediction; but we find that the suppression is essential if one is to achieve agreement with lattice-QCD predictions for the 0(-+) glueball mass. Hence, it is likely that this novel feature of V-mu nu rho is real and has observable implications for the spectrum, decays and interactions of all QCD bound-states. (AU)

• Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
• Beneficiário: Jun Takahashi
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais
• Processo FAPESP: 17/07595-0 - Aspectos não-perturbativos das funções de Green da QCD
• Beneficiário: Arlene Cristina Aguilar
• Modalidade de apoio: Auxílio à Pesquisa - Regular