Upsilon Transverse Momentum at Hadron Colliders

Details Upsilon Transverse Momentum at Hadron Colliders Upsilon Transverse Momentum at Hadron Colliders

2004-11-01

arxiv.org/abs/hep-ph/0411026v1

Int.J.Mod.Phys. A20 (2005) 3753-3755

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 figures. Presented at the 2004 Meeting of the APS Division of Particles and Fields, University of California, River

Scientific paper

10.1142/S0217751X05027515

We predict the shape of the transverse momentum p_T spectrum of Upsilon production. The distribution at low p_T is dominated by the region of small impact parameter b and may be computed reliably in perturbation theory. We resum to all orders in the strong coupling alpha_s the process-independent large logarithmic contributions that arise from initial-state gluon showers in the small p_T (< M_Upsilon) region. The cross section at large p_T is represented by the alpha_s^3 lowest-order non-vanishing perturbative contribution.

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