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Measurement of forward J/ψ production cross-sections in pp collisions at s√=13 TeV

Abstract:
The production of J/ψ mesons in proton-proton collisions at a centre-of-mass energy of s√=13 TeV is studied with the LHCb detector. Cross-section measurements are performed as a function of the transverse momentum p T and the rapidity y of the J/ψ meson in the region pT< 14 GeV/c and 2.0 < y < 4.5, for both prompt J/ψ mesons and J/ψ mesons from b-hadron decays. The production cross-sections integrated over the kinematic coverage are 15.30 ± 0.03 ± 0.86 μb for prompt J/ψ and 2.34 ± 0.01 ± 0.13 μb for J/ψ from b-hadron decays, assuming zero polarization of the J/ψ meson. The first uncertainties are statistical and the second systematic. The cross-section reported for J/ψ mesons from b-hadron decays is used to extrapolate to a total bb¯¯ cross-section. The ratios of the cross-sections with respect to s√=8 TeV are also determined.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/JHEP10(2015)172

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Publisher:
Springer Berlin Heidelberg
Journal:
Journal of High Energy Physics More from this journal
Volume:
2015
Issue:
172
Publication date:
2015-10-26
Acceptance date:
2015-10-05
DOI:
ISSN:
1029-8479 and 1126-6708


Keywords:
Pubs id:
pubs:574523
UUID:
uuid:c418db69-80d2-4199-a217-3961298907a4
Local pid:
pubs:574523
Deposit date:
2016-11-12

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