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Polarized J/psi from chi_{cJ} and psi' Decays at the Tevatron

Bernd A. Kniehl·Jungil Lee
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Abstract

We calculate the partonic cross sections for the hadroproduction of polarized chi_{cJ} mesons using the factorization formalism of nonrelativistic QCD. We also describe how the polarization is passed on to the J/psi mesons in the radiative feed-down chi_{cJ} -> J/psi + gamma and in the double-cascade decays of psi' mesons via chi_{cJ} intermediate states. These represent the missing ingredients needed to predict the polarization of prompt J/psi mesons at the Fermilab Tevatron.

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Bernd A. Kniehl, Jungil Lee. 2000-07-26. Polarized J/psi from chi_{cJ} and psi' Decays at the Tevatron. https://doi.org/10.1103/physrevd.62.114027

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