Author:
Ikeno Natsumi,Dias Jorgivan M.,Liang Wei-Hong,Oset Eulogio
Abstract
AbstractWe study the $$D^+ \rightarrow {\bar{K}}^0 \pi ^+ \eta $$
D
+
→
K
¯
0
π
+
η
reaction where the $$a_0(980)$$
a
0
(
980
)
excitation plays a dominant role. We consider mechanisms of external and internal emission at the quark level, hadronize the $$q {\bar{q}}$$
q
q
¯
components into two mesons and allow these mesons to undergo final state interaction where the $$a_0(980)$$
a
0
(
980
)
state is generated. While the $$a_0(980)$$
a
0
(
980
)
production is the dominant term, we also find other terms in the reaction that interfere with this production mode and, through interference with it, lead to a shape of the $$a_0(980)$$
a
0
(
980
)
significantly different from the one observed in other experiments, with an apparently much larger width.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
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