Author:
Lin Jia-Xin,Li Jia-Ting,Liang Wei-Hong,Chen Hua-Xing,Oset Eulogio
Abstract
AbstractWe perform a theoretical study of the $$J/\psi \rightarrow \omega (\phi ) K^* \bar{K} + c.c. \rightarrow \omega (\phi ) K^0 \pi ^+ K^-$$
J
/
ψ
→
ω
(
ϕ
)
K
∗
K
¯
+
c
.
c
.
→
ω
(
ϕ
)
K
0
π
+
K
-
reactions with the assumption that the $$f_1(1285)$$
f
1
(
1285
)
is dynamically generated from a single channel $$K^* \bar{K} + c.c$$
K
∗
K
¯
+
c
.
c
interaction in the chiral unitary approach. Two peaks in the $$K^0 \pi ^+ K^-$$
K
0
π
+
K
-
invariant mass distribution are observed, one clear peak locates at the $$f_1(1285)$$
f
1
(
1285
)
nominal mass, the other peak locates at around $$1420 \text {MeV}$$
1420
MeV
with about $$70 \text {MeV}$$
70
MeV
width. We conclude that the former peak is associated with the $$f_1(1285)$$
f
1
(
1285
)
and the latter peak is not a genuine resonance but a manifestation of the kinematic effect in the higher energy region caused by the $$K^* \bar{K} + c.c.$$
K
∗
K
¯
+
c
.
c
.
decay mode of the $$f_1(1285)$$
f
1
(
1285
)
.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
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