Yazar
Türkan, Arzu, Dağ, Hüseyin
Basım Tarihi
2019-05
Basım Yeri
-
Elsevier
Konu
Exotic hadrons, QCD phenomenology, QCD sum rules, X(4140)
Tür
Süreli Yayın
Dil
İngilizce
Dijital
Evet
Yazma
Hayır
Kütüphane
Özyeğin Üniversitesi
Demirbaş Numarası
0375-9474
Kayıt Numarası
64c19fd6-12f8-47cf-9dc5-b588ee4e46c8
Lokasyon
Natural and Mathematical Sciences
Tarih
2019-05
Örnek Metin
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
