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Search: authors:"J. A. Oller"

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Different pole structures in line shapes of the X(3872)

We introduce a near-threshold parameterization that is more general than the effective-range expansion up to and including the effective range because it can also handle a near-threshold zero in the \(D^0\bar{D}^{*0}\) S-wave. In terms of it we analyze the CDF data on inclusive \(p\bar{p}\) scattering to \(J/\psi \pi ^+\pi ^-\), and the Belle and BaBar data on B decays to \(K\, ...