English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a calculation for the polarizations of $J/\psi$ and $\psi'$produced in the hadron collisions at the Fermilab Tevatron. Various color octetchannels including ${}^1S_0^{(8)}$, ${}^3P_J^{(8)}$, and ${}^3S_1^{(8)}$ aswell as contributions from $\chi_{cJ}$ decays are considered in the $k_t$factorization approach. We find that in a rather wide range of the transversemomenta of $J/\psi$ and $\psi'$, the production rates could be dominated by the${}^1S_0^{(8)}$ channel, and the predicted polarizations from the${}^1S_0^{(8)}$ channel and $\chi_{cJ}$ feeddown contributions are roughlycompatible with the preliminary CDF data. This might provide a possible releasefrom the conflict between the NRQCD collinear parton model calculations and theCDF data.Comment: 12 pages, 4 PS files, final version for publicatio

physical review letters

Polarizations of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">J</mml:mi><mml:mi>/</mml:mi><mml:mi>ψ</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">ψ</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>in Hadroproduction at the Tevatron in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/…

Polarizations ofJ/ψandψ′in Hadroproduction at the Tevatron in the