Molecule-charmonium mixing for the X(3872) in QCD Sum Rules | Zendy

C. M. Zanetti | Zendy; R. Matheus | Zendy; F. S. Navarra | Zendy; M. Nielsen | Zendy; V. Credé | Zendy; P. Eugenio | Zendy; A. Ostrovidov | Zendy

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Molecule-charmonium mixing for the X(3872) in QCD Sum Rules

Author(s) -

C. M. Zanetti,

R. Matheus,

F. S. Navarra,

M. Nielsen,

V. Credé,

P. Eugenio,

A. Ostrovidov

Publication year - 2010

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.3483342

Subject(s) - x(3872) , physics , mixing (physics) , meson , particle physics , qcd sum rules , quantum chromodynamics , range (aeronautics) , nuclear physics , quantum mechanics , materials science , composite material

We use QCD sum rules to test the nature of the meson X (3872), assumed to be a mixture between charmonium and exotic molecular [cq] [qc] states with Jpc = 1++. We find that only a small range for the values of the mixing angle, 5°≤θ≤13°, can provide simultaneously good agreement with the experimental value of the mass and the decay width, within the errors. In this range we get mX = (3.77±0.18) GeV and Γ(X→J/ψπ+π−) = (9.3±6.9) MeV.

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