Quark mass dependence of the X(3872) binding energy
作者： V. Baru , E. Epelbaum , A.A. Filin , C. Hanhart , U.-G. Meißner
DOI: 10.1016/J.PHYSLETB.2013.08.073
关键词: Lattice QCD 、 Bound state 、 Particle physics 、 Atomic physics 、 Effective field theory 、 Exotic hadron 、 Binding energy 、 Lattice field theory 、 Quark 、 X(3872) 、 Physics
摘要: Abstract We explore the quark-mass dependence of pole position X ( 3872 ) state within molecular picture. The calculations are performed framework a nonrelativistic Faddeev-type three-body equation for D ¯ π system in J P C = 1 + channel. πD interaction is parametrised via ⁎ pole, and force included to render equations well defined. Its strength adjusted such that appears as bound 0.5 MeV below neutral threshold. find trajectory depends strongly on assumed short-range interactions which can be determined future lattice QCD calculations. At same time we able provide nontrivial information chiral extrapolation
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