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
Contributeur : Sophie Heurteau <>
Soumis le : mercredi 27 mai 2015 - 17:30:27
Dernière modification le : jeudi 11 janvier 2018 - 06:12:40

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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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