%0 Journal Article
%T Central exclusive production of J/psi and (2S) mesons in pp collisions at root s=13 TeV
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Henry, L.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanchez Mayordomo, C.
%J Journal of High Energy Physics
%D 2018
%V 10
%N 10
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2018
%O WOS:000448439200002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3783), last updated on Tue, 13 Nov 2018 10:19:38 +0000
%X Measurements are reported of the central exclusive production of J= and ( 2 S) mesons in pp collisions at a centre- of- mass energy of 13 TeV. Backgrounds are signi fi cantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters. The products of the cross- sections and the branching fractions for the decays to dimuons, where both muons are within the pseudorapidity range 2 : 0 < < 4 : 5, are measured to be The fi rst uncertainties are statistical, the second are systematic, and the third are due to the luminosity determination. The cross- sections are also measured di ff erentially for meson rapidities between 2.0 and 4.5. Good agreement is observed with theoretical predictions. Photoproduction cross- sections are derived and compared to previous experiments, and a deviation from a pure power- law extrapolation of lower energy data is observed.
%K Charm physics
%K Forward physics
%K Hadron-Hadron scattering (experiments)
%K Particle and resonance production
%K Quarkonium
%R 10.1007/JHEP10(2018)167
%U http://arxiv.org/abs/1806.04079
%U https://doi.org/10.1007/JHEP10(2018)167
%P 167-27pp