# 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}
}
• Published 6 May 2011
• Physics
• Physics Letters B
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…
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