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arXiv · hep-ph/0404158

Transverse momentum distribution of Upsilon production in hadronic collisions

Edmond L. Berger·Jianwei Qiu·Yili Wang
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Abstract

We calculate the transverse momentum p_T distribution for production of the Upsilon states in hadronic reactions. For small $p_T (\leq M_Υ)$, we resum to all orders in the strong coupling alpha_s the process-independent large logarithmic contributions that arise from initial-state gluon showers. We demonstrate that the p_T distribution at low p_T is dominated by the region of small impact parameter b and that it may be computed reliably in perturbation theory. We express the cross section at large p_T by the alpha_s^3 lowest-order non-vanishing perturbative contribution. Our results are consistent with data from the Fermilab Tevatron collider.

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Edmond L. Berger, Jianwei Qiu, Yili Wang. 2005-02-03. Transverse momentum distribution of Upsilon production in hadronic collisions. https://doi.org/10.1103/physrevd.71.034007

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