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The momentum distribution of J/psi in B decays
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The momentum distribution of J/psi in B decays
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The discrepancy between theory and data in the momentum distribution of slow J/psi in B decays has been several times addressed as a puzzle. Using the most recent results on exclusive B decays into J/psi and heavy kaons or exotic mesons and reconsidering the non-relativistic-QCD calculation of the color octet fragmentation component, we show that an improvement in the comparison between data and theory can be obtained. There is still room for a better fit to data and this may imply that new exotic mesons of the XYZ kind have yet to be discovered.
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Cited by 1 Pith paper
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Measurement of inclusive production of charmonium states in $b$-hadron decays via their decay into $\phi \phi$
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