%0 Journal Article
%T Pseudoscalar glueball mass: a window on three-gluon interactions
%A Souza, E. V.
%A Ferreira, M. N.
%A Aguilar, A. C.
%A Papavassiliou, J.
%A Roberts, C. D.
%A Xu, S. S.
%J European Physical Journal A
%D 2020
%V 56
%N 1
%I Springer
%@ 1434-6001
%G English
%F Souza_etal2020
%O WOS:000513948400001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4291), last updated on Wed, 04 Mar 2020 10:28:36 +0000
%X 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.
%R 10.1140/epja/s10050-020-00041-y
%U https://arxiv.org/abs/1909.05875
%U https://doi.org/10.1140/epja/s10050-020-00041-y
%P 25-7pp