Transverse momentum distribution of Upsilon production in hadronic collisions
Abstract
We calculate the transverse momentum p_T distribution for production of the Upsilon states in hadronic reactions. For small , 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.
Keywords
Cite
@article{arxiv.hep-ph/0404158,
title = {Transverse momentum distribution of Upsilon production in hadronic collisions},
author = {Edmond L. Berger and Jianwei Qiu and Yili Wang},
journal= {arXiv preprint arXiv:hep-ph/0404158},
year = {2011}
}
Comments
24 pages latex; 9 postscript files of figures. Presentation improved; new figure and references added; conclusions unaltered. Version to be published in Physical Review D