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hep-ph2010★ 1 cited
Isospin Violation in X(3872): Explanation From a New Tetraquark Model
Marek Karliner, Harry J. Lipkin
New data for X(3872) production in B decays provide a separation between X production and decay, sharpen several experimental puzzles and impose serious constraints on all models.…
hep-ph2010
About a Possible Nonstrange Cousin of the Theta+ Pentaquark
Marek Karliner, Harry J. Lipkin
We discuss the implications of the suggested interpretation of the recently reported narrow pi N resonance (width \approx 25 MeV at 1680 MeV) as a pentaquark in the same multiplet…
hep-ph2005
Isospin Analysis of pentaquark production forbids gamma p --> Theta^+ K_s and allows gamma n --> Theta^+ K^-
Marek Karliner, Harry J. Lipkin
The discrepancy between Theta^+ photoproduction on proton vs. deuteron can be resolved if the photon couples much more strongly to K^+K^- than to K0 K0bar as indicated by the exper…