Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-03-12
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.98.252002
We calculate the cross section for hadroproduction of a pair of heavy quarks in a 3S1 color-singlet state at next-to-leading order in QCD. This corresponds to the leading contribution in the NRQCD expansion for J/psi and Upsilon production. The higher-order corrections have a large impact on the p_T distributions, enhancing the production at high p_T both at the Tevatron and at the LHC. The total decay rate of a 3S1 into hadrons at NLO is also computed, confirming for the first time the result obtained by Mackenzie and Lepage in 1981.
Campbell John
Maltoni Fabio
Tramontano Francesco
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