Theoretical analysis of the double parton scattering in quarkonium production in proton-proton collision at the LHC

Abstract : The production process of quarkonia in proton-proton ($pp$) collision is a very good probe of the parton structure of the proton.Recent experimental data of the production of $J/\psi$+vector boson or quarkonium pairs at the LHC and Tevatron suggest the relevance of double parton scatterings (DPS).We discuss here the single parton scattering (SPS) contribution to the $J/\psi +Z$, $J/\psi +W$, and $J/\psi +J/\psi$ productions in hadron collisions.By revisiting the computations of the SPS contributions to the $J/\psi+Z$ and $J/\psi +W$ productions, we demonstrate that the ATLAS data in fact show evidence for DPS.
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Submitted on : Tuesday, September 11, 2018 - 11:30:20 AM
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Nodoka Yamanaka, Jean-Philippe Lansberg, Hua-Sheng Shao, Yu-Jie Zhang. Theoretical analysis of the double parton scattering in quarkonium production in proton-proton collision at the LHC. 26th International Workshop on Deep Inelastic Scattering and Related Subjects, Apr 2018, Port Island, Japan. pp.138, ⟨10.22323/1.316.0138⟩. ⟨hal-01871753⟩

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