Abstract
The meson X(3872) and several related states appear to be in large part hadronic molecules in which a heavy flavored meson (e.g., D0) is bound to another heavy meson (e.g., D¯⁎0). Although not the only contribution to the binding, pion exchange seems to play a crucial role in generating the longest-range force between constituents. Mesons without u and d light quarks (such as Ds) cannot exchange pions, but under suitable conditions can bind as a result of η exchange. Channels in which this mechanism is possible are identified, and suggestions are made for searches for the corresponding molecular states, including a manifestly exotic baryonic ΛcD¯s⁎ resonance decaying into J/ψΛ.
Original language | English |
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Pages (from-to) | 365-370 |
Number of pages | 6 |
Journal | Nuclear Physics A |
Volume | 954 |
DOIs | |
State | Published - 1 Oct 2016 |
Keywords
- Exotic hadrons
- Heavy quarks
- QCD
- Quark model