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Double-quarkonium production at a fixed-target experiment at the LHC (AFTER@LHC)

Abstract : We present predictions for double-quarkonium production in the kinematical region relevant for the proposed fixed-target experiment using the LHC beams (dubbed as AFTER@LHC). These include all spin-triplet S -wave charmonium and bottomonium pairs, i.e. Psi(n_1S) + Psi(n_2S), Psi(n_1S) + Upsilon(m_1S) and Upsilon(m_1S) + Upsilon(m_2S ) with n_1,n_2 = 1,2 and m_1,m_2 = 1,2,3. We calculate the contributions from double-parton scatterings and single-parton scatterings. With an integrated luminosity of 20 fb-1 to be collected at AFTER@LHC, we find that the yields for double-charmonium production are large enough for differential distribution measurements. We discuss some differential distributions for J/Psi + J/Psi production, which can help to study the physics of double-parton and single-parton scatterings in a new energy range and which might also be sensitive to double intrinsic c-bar(c) coalescence at large negative Feynman x.
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http://hal.in2p3.fr/in2p3-01157212
Contributor : Sophie Heurteau <>
Submitted on : Wednesday, May 27, 2015 - 5:30:27 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:49 PM

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J. P. Lansberg, H. S. Shao. Double-quarkonium production at a fixed-target experiment at the LHC (AFTER@LHC). Nuclear Physics B Proceedings Supplement, 2015, 900, pp.273-294. ⟨10.1016/j.nuclphysb.2015.09.005⟩. ⟨in2p3-01157212⟩

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