# QCD sum rules for the production of the X(3872) as a mixed molecule-charmonium state in B meson decay

@article{Zanetti2011QCDSR, title={QCD sum rules for the production of the X(3872) as a mixed molecule-charmonium state in B meson decay}, author={C. M. Zanetti and Marina Nielsen and Ricardo D'Elia Matheus}, journal={Physics Letters B}, year={2011}, volume={702}, pages={359-363} }

Abstract We use QCD sum rules to calculate the branching ratio for the production of the meson X ( 3872 ) in the decay B → X ( 3872 ) K , assumed to be a mixture between charmonium and exotic molecular [ c q ¯ ] [ q c ¯ ] states with J PC = 1 + + . We find that in a small range for the values of the mixing angle, 5 ° ⩽ θ ⩽ 13 ° , we get the branching ratio B ( B → X K ) = ( 1.00 ± 0.68 ) × 10 − 5 , which is in agreement with the experimental upper limit. This result is compatible with the…

## 21 Citations

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QCD sum rules are used to study the mass and the decay widths of the Y(3940) state. We assume that it can be described by a mixed charmonium-molecule scalar current with JPC = 0++. Using a mixing…

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We discuss the results of an unquenched quark model (UQM) calculation of the self energy corrections to charmonium spectrum due to the coupling to the meson-meson continuum. In our approach, the…

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Abstract We consider X ( 3872 ) and Y ( 4140 ) as the vector tetraquark states of X c 0 ≡ c c ¯ u u ¯ ( d d ¯ ) and c c ¯ s s ¯ , respectively. By connecting Λ b → X c 0 Λ to B − → X c 0 K − , we…

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- Physics
- 2015

We calculate the branching ratio for the production of the meson $Y(4260)$ in the decay $B^- \to Y(4260)K^-$. We use QCD sum rules approach and we consider the $Y(4260)$ to be a mixture between…

Resonance
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The spectroscopic parameters and partial widths of the strong decay channels of the vector meson $ Y(4660)$ are calculated by treating it as a bound state of a diquark and antidiquark. The mass and…

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In this work we study the structures near 4.3 GeV in the J/psi phi invariant mass spectra in B meson decay process B+ -> J/psi phi K+ and two photon fusion process gamma gamma -> J/psi phi. The…

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