The newly observed Zcs(3985)- state: In vacuum and a dense medium
Yükleniyor...
Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
We report on some properties of the newly
observed charged hidden-charmed open strange Zcs(3985)−
state by BESIII Collaboration. Assigning the quantum numbers J P = 1+ and the quark composition ccs¯ u¯ and considering it as the strange partner of the famous Zc(3900) state, we
estimate the mass of the Zcs(3985)− resonance in vacuum
and compare it with the experimental data. We also investigate its mass, current coupling and vector-self energy in a
medium with finite density. Our result on the mass in vacuum
agrees well with the experimental data. We estimate the mass
and current coupling of the b-partner of this state, Zbs, in the
vacuum as well. For its mass we get mZbs = 10732+97
−46 MeV,
which may be checked via other nonperturbative approaches
as well as future experiments. We present the dependence of
the spectroscopic parameters of Zcs(3985)− state on density and observe that these parameters are linearly changed with
increasing in the density.
Açıklama
The authors thank TUBITAK for the partial support provided under the Grant No. 119F094.
Anahtar Kelimeler
BESIII Collaboration, QCD Sum-Rules, Resonance Physics, Quark, Width
Kaynak
European Physical Journal C
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
81
Sayı
1
