Observation of J/ψ pair production in pp collisions at √(s)=7 TeV

2011/09/30 by LHCb Collaboration, R. Aaij, B. Adeva +567 · 1 citation
Physics and Astronomy · #hep-ex

paper · pdf · doi:10.1016/j.physletb.2011.12.015

published as Physics Letters B 707 (2012), pp. 52-59 · 10 pages, 3 figures

arxiv created 2012/01/07 · arxiv updated 2012/01/10

Abstract

The production of J/ψ pairs in proton-proton collisions at a centre-of-mass energy of 7 TeV has been observed using an integrated luminosity of 37.5 pb^-1 collected with the LHCb detector. The production cross-section for pairs with both \jpsi in the rapidity range 2<y^J/ψ<4.5 and transverse momentum p_T^J/ψ<10 GeV/c is σ^J/ψJ/ψ = 5.1±1.0±1.1 nb, where the first uncertainty is statistical and the second systematic.

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