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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pseudoscalar glueball mass: a window on three-gluon interactions

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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]
Total Authors: 6
[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
Total Affiliations: 8
Document type: Journal article
Source: EUROPEAN PHYSICAL JOURNAL A; v. 56, n. 1 JAN 28 2020.
Web of Science Citations: 0

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)

FAPESP's process: 17/05685-2 - Hadronic physics in high energy nuclear collisions
Grantee:Jun Takahashi
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/07595-0 - Nonperturbative aspects of the QCD Green's functions
Grantee:Arlene Cristina Aguilar
Support type: Regular Research Grants