Complete Nonrelativistic-QCD Prediction for Prompt Double $J/\psi$ Hadroproduction

Abstract

We perform a complete study of prompt double $J/\psi$ hadroproduction at leading order in the nonrelativistic-QCD factorization framework by including all possible pairings of the $c\bar{c}$ Fock states ${}^1{S}_0^{[8]}$, ${}^3{S}_1^{[1,8]}$, and ${}^3{P}_J^{[1,8]}$ with $J=0,1,2$. We find that the ${}^1{S}_0^{[8]}$ and ${}^3{P}_J^{[8]}$ channels of $J/\psi$ and ${\psi }^{\prime }$ production and the ${}^3{P}_J^{[1]}$ and ${}^3{S}_1^{[8]}$ channels of ${\chi }_{cJ}$ production, which have been overlooked so far, greatly dominate at large invariant masses and rapidity separations of the $J/\psi$ pair, and that their inclusion nearly fills the large gap between previous incomplete predictions within the color-singlet model and the recent measurement by the CMS Collaboration at the CERN LHC, leaving room for next-to-leading-order corrections of typical size.

5 pages, 4 figures, matches journal version

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Cited by in corpus (16)

• Measurement of the prompt $J/\psi$ pair production cross-section in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• New structures in the J/$\psi$J/$\psi$ mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Observation of an excess of di-charmonium events in the four-muon final state with the ATLAS detector
• Associated production of a quarkonium and a Z boson at one loop in a quark-hadron-duality approach
• Complete NLO QCD study of single- and double-quarkonium hadroproduction in the colour-evaporation model at the Tevatron and the LHC
• Double parton scattering in pair-production of $J/\psi$ mesons at the LHC revisited
• 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
• Phenomenological analysis of associated production of $Z^0+b$ in the $b\to J/\psi X$ decay channel at the LHC
• Improved understanding of the peaking phenomenon existing in the new di-$J/\psi$ invariant mass spectrum from the CMS Collaboration
• Global analysis of $\psi (2S)$ inclusive hadroproduction at next-to-leading order in nonrelativistic-QCD factorization
• Photoproduction of the double $J/\psi$ (${\rm Y}$) at the LHC with forward proton tagging
• The role of initial gluon emission in double $J/\psi$ production at central rapidities
• Prompt $J/\psi$-pair production at the LHC: impact of loop-induced contributions and of the colour-octet mechanism
• ${\eta }_Q$ meson photoproduction in ultrarelativistic heavy ion collisions
• Bottomonia production in p+p collisions under NRQCD formalism
• Quark polarization and transverse momentum effects on double quarkonium production in hadronic collisions