Compact tetraquark interpretation of the XYZ states

2015/12/14 by Angelo Esposito
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Diquark #Interpretation (philosophy) #Linguistics #Meson #Particle physics #Particle physics theoretical and experimental studies #Philosophy #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Tetraquark #Theoretical physics #hep-ph

paper · pdf · doi:10.1063/1.4949443

6 pages, 3 figures. Proceeding for the Hadron 2015 conference @ JLab, Virginia

arxiv created 2015/12/14 · openalex publication_date 2016/01/01 · arxiv updated 2016/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The past decade has witnessed the observation of several exotic charmonium-like resonances, some of which are manifestly non-qq¯ mesons. We review one of the most popular interpretations of such states: the compact tetraquark in the constituent diquark-antidiquark picture. Moreover, we discuss some unexplored decay channels, which are particularly sensitive to the different phenomenological models, and could therefore shed some light on the nature of these fascinating states. Some brief comments on the recently observed pentaquarks are also included.

Citations

• The D threshold resonance
• The new heavy mesons: A status report
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• Z(4430)and a new paradigm for spin interactions in tetraquarks
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• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• A Tentative Description of Z_c,b States in Terms of Metastable Feshbach Resonances
• The Z_c^(′) → η_c ρ decay as a discriminant between tetraquarks and meson molecules