Abstract
AbstractWe investigate the $$B^+\rightarrow J/\psi \phi K^+$$
B
+
→
J
/
ψ
ϕ
K
+
decay via various rescattering diagrams. Without introducing genuine exotic resonances, it is shown that the $$Z_{cs}(4000)$$
Z
cs
(
4000
)
, $$Z_{cs}(4220)$$
Z
cs
(
4220
)
and X(4700) reported by the LHCb collaboration can be simulated by the $$J/\psi K^{*+}$$
J
/
ψ
K
∗
+
, $$\psi ^\prime K^+$$
ψ
′
K
+
and $$\psi ^\prime \phi $$
ψ
′
ϕ
threshold cusps, respectively. These cusps are enhanced by some nearby triangle singularities. The X(4685) with $$J^P=1^+$$
J
P
=
1
+
cannot be well simulated by the threshold effects in our model, which implies that it may be a genuine resonance.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Cited by
14 articles.
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