Author
Türkan, Arzu, Dağ, Hüseyin
Publication Date
2019-05
Publication Place
-
Elsevier
Subject
Exotic hadrons, QCD phenomenology, QCD sum rules, X(4140)
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0375-9474
Record ID
64c19fd6-12f8-47cf-9dc5-b588ee4e46c8
Library Location
Natural and Mathematical Sciences
Date
2019-05
Sample Text
In this work, we chose three molecular and three diquark-antidiquark currents with the quark content c (c) over bars (s) over bar and J(PC) = 0(++), 1(++), 2(++), and estimated the masses and the meson coupling constants of the ground states coupling to these currents in the framework of QCD sum rules. In operator product expansion, we considered the terms including dimension eight, and we performed pole contribution tests carefully. According to our results, all of these currents couple to the ground states with degenerate masses which are in 10 MeV vicinity of chi(c1) (4140). Therefore, with a QCD sum rules analysis, it is not possible to conclude that chi(c1) (4140) has a dominant molecular or diquark-antidiquark content. However, there may be three states degenerate in mass, with positive charge conjugation and different isospins.
DOI
10.1016/j.nuclphysa.2019.01.011
Cilt
985
