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- W1992011918 abstract "Very recently the BABAR collaboration has put forward a claim that the $X(3872)$ is not a ${1}^{++}$ resonance, as most of the phenomenological work on the subject was relying on, but rather a ${2}^{ensuremath{-}+}$ one. We examine the consequences of this quantum number assignment for the solution of the $X(3872)$ puzzle. The molecular interpretation appears less likely, and the conventional charmonium interpretation should be reconsidered. There are several well-known difficulties with this interpretation, to which we add a new one: the production cross section at CDF is predicted to be much smaller than that observed. We also confirm, using a relativistic string model, the conclusion from potential models that the mass of the state is not consistent with expectations. In the tetraquark interpretation the ${2}^{ensuremath{-}+}$ assignment implies a rich spectrum of partner states, although the $X(3872)$ may be among the few which are narrow enough to be observable." @default.
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- W1992011918 date "2010-10-05" @default.
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- W1992011918 title "The<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msup><mml:mn>2</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math>assignment for 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>" @default.
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- W1992011918 doi "https://doi.org/10.1103/physrevd.82.074003" @default.
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