Double prompt $J/\psi$ hadroproduction in the parton Reggeization approach with high-energy resummation

Abstract

We study double prompt $J/\psi$ hadroproduction within the nonrelativistic-QCD factorization formalism adopting the parton Reggeization approach to treat initial-state radiation in a gauge invariant and infrared-safe way. We present first predictions for the cross section distributions in the transverse momenta of the subleading $J/\psi$ meson and the $J/\psi$ pair. Already at leading order in ${\alpha }_s$, these predictions as well as those for the total cross section and its distributions in the invariant mass $m_{\psi \psi }$ and the rapidity separation $|Y|$ of the $J/\psi$ pair nicely agree with recent ATLAS and CMS measurements, except for the large-$m_{\psi \psi }$ and large-$|Y|$ regions, where the predictions substantially undershoot the data. In the latter regions, BFKL resummation is shown to enhance the cross sections by up to a factor of two and so to improve the description of the data.

6 pages, 4 figures, 1 table; discussion of theoretical uncertainties substantiated, figure and references added, title slightly changed, accepted for publication in Physical Review Letters

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Cited by in corpus (20)

• New Observables in Inclusive Production of Quarkonia
• On the mechanism of $T_{4c}(6900)$ tetraquark production
• Studies of gluon TMDs and their evolution using quarkonium-pair production at the LHC
• Producing fully-charm structures in the $J/\psi$-pair invariant mass spectrum
• Conceptual design of the Spin Physics Detector
• Complete NLO QCD study of single- and double-quarkonium hadroproduction in the colour-evaporation model at the Tevatron and the LHC
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Fully-heavy structures in the invariant mass spectrum of $J/\psi \psi (3686)$, $J/\psi \psi (3770)$, $\psi (3686)\psi (3686)$, and $J/\psi {\rm Y}(1S)$ at hadron colliders
• Sudakov resummation from the BFKL evolution
• Single and pair $J/\psi$ production in the Improved Color Evaporation Model using the Parton Reggeization Approach
• Improved understanding of the peaking phenomenon existing in the new di-$J/\psi$ invariant mass spectrum from the CMS Collaboration
• Prospects for quarkonium studies at the high-luminosity LHC
• Matching next-to-leading-order and high-energy-resummed calculations of heavy-quarkonium-hadroproduction cross sections
• Global analysis of $\psi (2S)$ inclusive hadroproduction at next-to-leading order in nonrelativistic-QCD factorization
• High energy scattering in Einstein-Cartan gravity
• Production of three isolated photons in the parton Reggeization approach at high energies
• Prompt $J/\psi$ photoproduction within the non-relativistic QCD framework at the CEPC
• Associated production of $J/\psi$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach
• Measurement of associated $J/\psi$-$\psi (2S)$ production cross-section in $pp$ collisions at $\sqrt{s}=13$ TeV
• Charmonium pair production at the LHCb in the ICEM using the $k_T$-factorization: DPS versus SPS