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How much is the compositeness of a bound state constrained by a and r0? The role of the interaction range
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How much is the compositeness of a bound state constrained by a and r0? The role of the interaction range
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Journal Article
How much is the compositeness of a bound state constrained by a and r0? The role of the interaction range
2022
Overview
We present an approach that allows one to obtain information on the compositeness of molecular states from combined information of the scattering length of the hadronic components, the effective range, and the binding energy. We consider explicitly the range of the interaction in the formalism and show it to be extremely important to improve on the formula of Weinberg obtained in the limit of very small binding and zero range interaction. The method allows obtaining good information also in cases where the binding is not small. We explicitly apply it to the case of the deuteron and the
D
s
0
∗
(
2317
)
and
D
s
1
∗
(
2460
)
states and determine simultaneously the value of the compositeness within a certain range, as well as get qualitative information on the range of the interaction.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
