QCD corrections to $J/ψ$ plus $Z^0$-boson production at the LHC

Details QCD corrections to $J/ψ$ plus $Z^0$-boson production at the LHC QCD corrections to $J/ψ$ plus $Z^0$-boson production at the LHC

2011-02-02

arxiv.org/abs/1102.0398v2

JHEP 1102:071,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 page revtex, 5 eps figures, to appear in JHEP

Scientific paper

10.1007/JHEP02(2011)071

The $J/\psi+Z^0$ associated production at the LHC is an important process in investigating the color-octet mechanism of non-relativistic QCD in describing the processes involving heavy quarkonium. We calculate the next-to-leading order (NLO) QCD corrections to the $J/\psi +Z^0$ associated production at the LHC within the factorization formalism of nonrelativistic QCD, and provide the theoretical predictions for the distribution of the $J/\psi$ transverse momentum. Our results show that the differential cross section at the leading-order is significantly enhanced by the NLO QCD corrections. We conclude that the LHC has the potential to verify the color-octet mechanism by measuring the $J/\psi+Z^0$ production events.

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