In:
EPJ Web of Conferences, EDP Sciences, Vol. 175 ( 2018), p. 05016-
Abstract:
Abstract.We perform a glueball-relevant study on isoscalars based on anisotropic N f = 2 lattice QCD gauge configurations. In the scalar channel, we identify the ground state obtained through gluonic operators to be a single-particle state through its dispersion relation. When q q operator is included, we find the mass of this state does not change, and the q q operator couples very weakly to this state. So this state is most likely a glueball state. For pseudoscalars, along with the exiting lattice results, our study implies that both the conventional q q state η2 (or η' in flavor SU (3)) and a heavier glueball-like state with a mass of roughly 2.6 GeV exist in the spectrum of lattice QCD with dynamical quarks.
Type of Medium:
Online Resource
ISSN:
2100-014X
DOI:
10.1051/epjconf/201817505016
Language:
English
Publisher:
EDP Sciences
Publication Date:
2018
detail.hit.zdb_id:
2595425-8
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