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arXiv · 1102.0398

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

Song Mao·Ma Wen-Gan·Li Gang·Zhang Ren-You·Guo Lei
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Abstract

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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Song Mao, Ma Wen-Gan, Li Gang, Zhang Ren-You, Guo Lei. 2011-02-02. QCD corrections to $J/\psi$ plus $Z^0$-boson production at the LHC. https://doi.org/10.1007/jhep02(2011)071

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