نویسنده
Türkan, Arzu, Dağ, Hüseyin
تاریخ انتشار
2019-05
محل انتشار
-
Elsevier
موضوع
Exotic hadrons, QCD phenomenology, QCD sum rules, X(4140)
نوع
دوره ای
زبان
انگلیسی
دیجیتال
بله
نسخه خطی
خیر
کتابخانه
دانشگاه اوزیغین
شناسه دارایی کتابخانه
0375-9474
شماره ثبت
64c19fd6-12f8-47cf-9dc5-b588ee4e46c8
محل کتابخانه
Natural and Mathematical Sciences
تاریخ
2019-05
متن نمونه
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
