$ψ-$ Polarization as a test of colour octet quarkonium production

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We calculate the $\alpha s$ corrections to the transverse polarization fraction of $\psi^\prime$-s produced at the Tevatron. If the `$\psi^\prime$-anomaly- is explained by gluon fragmentation into a colour octet Fock component of the $\psi^\prime$, the $\psi^\prime$-s should be $100\%$ transversely polarized at leading order in \$\alpha

Author: M. Beneke; I. Z. Rothstein

Source: https://archive.org/