Author:
Wang Zheng-Li,Zou Bing-Song
Abstract
AbstractWe study dynamically generated $$a_0$$
a
0
resonances by interactions between vector mesons including their coupling to channels of pseudoscalar mesons within coupled-channel approach. Both vector and pseudoscalar mesons are considered as t-channel exchanged mesons for calculating interactions between vector mesons. Analogous to $$a_0(980)$$
a
0
(
980
)
as a $$K{\bar{K}}-\pi \eta $$
K
K
¯
-
π
η
dynamically generated state, there is an $$a_0(1710)$$
a
0
(
1710
)
as a coupled channel dynamically generated state near $$K^*\bar{K}^*$$
K
∗
K
¯
∗
threshold. The channels involved are $$\rho \phi ,K^*\bar{K}^*,\rho \omega , K\bar{K},\pi \eta $$
ρ
ϕ
,
K
∗
K
¯
∗
,
ρ
ω
,
K
K
¯
,
π
η
. This $$a_0$$
a
0
mainly decays to $$\rho \omega $$
ρ
ω
, $$\pi \eta $$
π
η
and $$K\bar{K}$$
K
K
¯
. This pole is much tied to the coupled channel effect. If we turn off either $$\rho \phi $$
ρ
ϕ
or $$K^*\bar{K}^*$$
K
∗
K
¯
∗
, the pole disappears. In addition, it is found that $$a_0(1450)$$
a
0
(
1450
)
may also be dynamically generated by $$\rho \omega $$
ρ
ω
interactions due to $$\pi $$
π
and $$\eta $$
η
exchange.
Funder
National Natural Science Foundation of China
Chinese Academy of Sciences
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Cited by
13 articles.
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