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Search: authors:"Xian-Wei Kang"

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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\, ...

Antinucleon-nucleon interaction in chiral effective field theory

Results of an exploratory study of the antinucleon-nucleon interaction within chiral effective field theory are reported. The antinucleon-nucleon potential is derived up to next-to-next-to-leading order, based on a modified Weinberg power counting, in close analogy to pertinent studies of the nucleon-nucleon interaction. The low-energy constants associated with the arising contact ...