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• W2491748952 abstract "We discuss the nature of the $chi_b(3P)$ and $X(3872)$ mesons: Are the $chi_b(3P)$'s standard $b bar b$ mesons or $b bar b$ states with a significative continuum component? Is the $X(3872)$ a $c bar c$ state with continuum coupling effects or a meson-meson molecule? To do that, we compare quark model and unquenched quark model results for the mass barycenter and splittings of the $chi_b(3P)$ multiplet. Future and more precise experimental results will discriminate between the two interpretations. In the case of the $X(3872)$, we interpret it a $c bar c$ core plus higher Fock components due to the coupling to the meson-meson continuum, thus we think that it is compatible with the meson $chi_{c1}(2P)$, with $J^{PC} = 1^{++}$. The $J^{PC} = 1^{++}$ quantum numbers are in agreement with the experimental results found by the LHCb collaboration. In our view, the $X(3872)$'s mass is lower than the quark model's predictions because of self energy shifts. We also provide an estimation of the open charm/bottom strong decay modes of the $X(3872)$ and $chi_b(3P)$ mesons, such as $X(3872) rightarrow D bar D^*$ and $chi_{b2}(3P) rightarrow B bar B$, and radiative transitions." @default.
• W2491748952 created "2016-08-23" @default.
• W2491748952 creator A5040521270 @default.
• W2491748952 creator A5040648313 @default.
• W2491748952 creator A5057624411 @default.
• W2491748952 date "2014-09-11" @default.
• W2491748952 modified "2023-10-16" @default.
• W2491748952 title "Quark structure of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>X</mml:mi><mml:mo stretchy=false>(</mml:mo><mml:mn>3872</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>χ</mml:mi><mml:mi>b</mml:mi></mml:msub><mml:mo stretchy=false>(</mml:mo><mml:mn>3</mml:mn><mml:mi>P</mml:mi><mml:mo stretchy=false>)</mml:mo></mml:math>resonances" @default.
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• W2491748952 doi "https://doi.org/10.1103/physrevd.90.054010" @default.
• W2491748952 hasPublicationYear "2014" @default.
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