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Article overview
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How the X(5568) challenges our understanding of QCD | Feng-Kun Guo
; Ulf-G. Meißner
; Bing-Song Zou
; | Date: |
21 Mar 2016 | Abstract: | We discuss the X(5568) particle recently announced by the D0 Collaboration.
Several types of models were proposed to explain this structure in the
literature. As pointed out by Burns and Swanson (arXiv:1603.04366), none of
them provides a satisfactory description of the observation. We provide
additional arguments using general properties of QCD, and conclude that the
observation of the X(5568), if confirmed, poses serious challenges to our
understanding of nonperturbative QCD. | Source: | arXiv, 1603.6316 | Services: | Forum | Review | PDF | Favorites |
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