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Upsilon polarization measurement at CDF

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arxiv 1011.0161 v1 pith:BWWCENCA submitted 2010-10-31 hep-ex

Thomas Kuhr (for the CDF Collaboration) This is my paper · ORCID
classification hep-ex
keywords measurementpolarizationpredictionsproductionrangeagreesallowingarticle
verification ladder T0 review T1 audit T2 compute T3 formal
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Measurements of production cross sections and polarizations are essential inputs for a theoretical understanding of heavy vector meson production. In this article the CDF measurement of the Y(1S) polarization in the kinematic range |y|<0.6 and 2 < pT [GeV/c] < 40 using a data sample of 2.9/fb is described. Compared to the CDF Run I measurement, with which it agrees, it extends the covered pT range, allowing for a better comparison to predictions in the perturbative regime. The observed trend towards longitudinal polarization at high transverse momentum disagrees with predictions based on non-relativistic QCD.

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  1. Measurements of $\varUpsilon$ States Production in $\textit{p+p}$ Collisions at $\sqrt{s} = 500\:\mathrm{GeV}$ with STAR: Cross Sections, Ratios, and Multiplicity Dependence

    hep-ex 2025-02 conditional novelty 6.0 of 10

    First measurement of Upsilon meson production cross sections at sqrt(s)=500 GeV in p+p collisions, including multiplicity dependence.

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