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arXiv · 2304.07481

Associated production of $J/ψ$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach

Alexey Chernyshev·Vladimir Saleev
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Abstract

In the article, we study the associated production of prompt $J/ψ$ mesons and $Z(W)$ bosons in the improved color evaporation model using the high-energy factorization as it is formulated in the parton Reggeization approach. The last one is based on the modified Kimber-Martin-Ryskin-Watt model for unintegrated parton distribution functions and the effective field theory of Reggezied gluons and quarks, suggested by L.N.~Lipatov. We predict cross section for associated $J/ψ$ and $Z ( W)$ hadroproduction via the single and double parton scattering mechanisms using the set of model parameters that have been obtained early for the description of single and double prompt $J/ψ$ production at the LHC energies. The numerical calculations are realized using the Monte-Carlo event generator KaTie. The calculation results are compared with the data at the energies $\sqrt{s} = 7 \mbox{ and } 8$ TeV and we make predictions for the energy $\sqrt{s} = 13$ TeV for $J/ψ$ plus $Z(W)$ and $Υ$ plus $Z/W$ at the $\sqrt{s} = 8 \mbox{ and } 13$ TeV associated productions.

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Alexey Chernyshev, Vladimir Saleev. 2023-12-02. Associated production of $J/ψ$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach. https://doi.org/10.1142/s0217751x23501932

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