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- W2520004827 abstract "Different experiments have confirmed that the $D_{s0}^{ast}(2317)$ and $D_{s1}(2460)$ mesons are very narrow states located, respectively, below the $DK$ and $D^{ast}K$ thresholds. This is markedly in contrast with the expectations of naive quark models and heavy quark symmetry. We address the mass shifts of the $cbar{s}$ ground states with quantum numbers $J^{P}=0^{+}$ ($D_{s0}^{ast}(2317)$) and $J^{P}=1^{+}$ ($D_{s1}(2460)$) using a nonrelativistic constituent quark model in which quark-antiquark and meson-meson degrees of freedom are incorporated. The quark model has been applied to a wide range of hadronic observables and thus the model parameters are completely constrained. We observe that the coupling of the $0^{+}$ $(1^{+})$ meson sector to the $DK$ $(D^{ast}K)$ threshold is a key feature in lowering the masses of the corresponding $D_{s0}^{ast}(2317)$ and $D_{s1}(2460)$ states predicted by the naive quark model, but also in describing the $D_{s1}(2536)$ meson as the $1^{+}$ state of the $j_{q}^{P}=3/2^{+}$ doublet predicted by heavy quark symmetry and thus reproducing its strong decay properties. Two features of our formalism cannot be address nowadays by other approaches: the coupling of the $D$-wave $D^{ast}K$ threshold in the $J^{P}=1^{+}$ $cbar{s}$ channel and the computation of the probabilities associated with different Fock components in the physical state." @default.
- W2520004827 created "2016-09-23" @default.
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- W2520004827 date "2016-09-07" @default.
- W2520004827 modified "2023-10-16" @default.
- W2520004827 title "Molecular components in $mathbf{D_{s0}^{ast}(2317)}$ and $mathbf{D_{s1}(2460)}$ mesons" @default.
- W2520004827 hasPublicationYear "2016" @default.
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