Abstract
AbstractWe report on some properties of the newly observed charged hidden-charmed open strange $$ Z_{cs}(3985)^- $$
Z
cs
(
3985
)
-
state by BESIII Collaboration. Assigning the quantum numbers $$ J^{P} = 1^{+}$$
J
P
=
1
+
and the quark composition $$ c \bar{c} s\bar{u} $$
c
c
¯
s
u
¯
and considering it as the strange partner of the famous $$ Z_c(3900) $$
Z
c
(
3900
)
state, we estimate the mass of the $$ Z_{cs}(3985)^- $$
Z
cs
(
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, $$ Z_{bs}$$
Z
bs
, in the vacuum as well. For its mass we get $$ m_{Z_{bs}}= 10732^{+97}_{-46}~\hbox {MeV}$$
m
Z
bs
=
10732
-
46
+
97
MeV
, which may be checked via other nonperturbative approaches as well as future experiments. We present the dependence of the spectroscopic parameters of $$ Z_{cs}(3985)^- $$
Z
cs
(
3985
)
-
state on density and observe that these parameters are linearly changed with increasing in the density.
Funder
Türkiye Bilimsel ve Teknolojik Arastirma Kurumu
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Reference67 articles.
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