Perspectives on heavy-quarkonium production at the LHC

Lansberg, J. P.; Rakotozafindrabe, A.; Artoisenet, Pierre; Blaschke, D.; d’Enterria, D.; Kraan, A.; Maltoni, Fabio; Prorok, Dariusz; Satz, Helmut; Jean-Philippe, Lansberg; Matagne, Nicolas

doi:10.1063/1.2987169

Cited by 33 publications

(14 citation statements)

References 100 publications

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“…The ATLAS experiment [31] at the LHC is a multi-purpose detector with a forward-backward symmetric cylindrical geometry and a nearly 4π coverage in solid angle. 1 It consists of an inner tracking detector (ID) surrounded by a thin superconducting solenoid providing a 2 T axial magnetic field, electromagnetic and hadron calorimeters, and a muon spectrometer (MS). The ID covers the pseudorapidity range |η| < 2.5.…”

Section: Atlas Detectormentioning

confidence: 99%

“…The study of heavy quarkonium bound states (cc and bb) in ultra-relativistic heavy-ion collisions [1,2] has been a subject of intense theoretical and experimental efforts since it was initially proposed by Matsui and Satz [3] as a probe to study a deconfined quark-gluon plasma (QGP) created in nucleus-nucleus (A+A) collisions. In order to understand quarkonium yields in A+A collisions it is necessary to disentangle effects due to interaction between quarkonium and the QGP medium from those that can be ascribed to cold nuclear matter (CNM).…”

Section: Introductionmentioning

confidence: 99%

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Measurement of quarkonium production in proton–lead and proton–proton collisions at $$5.02~\mathrm {TeV}$$ 5.02 TeV with the ATLAS detector

Aaboud¹,

Aad²,

Abbott³

et al. 2018

Eur. Phys. J. C

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The modification of the production of J/ψ, ψ(2S), and Υ (nS) (n = 1, 2, 3) in p+Pb collisions with respect to their production in pp collisions has been studied. The p+Pb and pp datasets used in this paper correspond to integrated luminosities of 28 nb −1 and 25 pb −1 respectively, collected in 2013 and 2015 by the ATLAS detector at the LHC, both at a centre-of-mass energy per nucleon pair of 5.02 TeV. The quarkonium states are reconstructed in the dimuon decay channel. The yields of J/ψ and ψ(2S) are separated into prompt and non-prompt sources. The measured quarkonium differential cross sections are presented as a function of rapidity and transverse momentum, as is the nuclear modification factor, R pPb for J/ψ and Υ (nS). No significant modification of the J/ψ production is observed while Υ (nS) production is found to be suppressed at low transverse momentum in p+Pb collisions relative to pp collisions. The production of excited charmonium and bottomonium states is found to be suppressed relative to that of the ground states in central p+Pb collisions.

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Section: Atlas Detectormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of quarkonium production in proton–lead and proton–proton collisions at $$5.02~\mathrm {TeV}$$ 5.02 TeV with the ATLAS detector

Aaboud¹,

Aad²,

Abbott³

et al. 2018

Eur. Phys. J. C

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“…There have been numerous experimental and theoretical investigations since then that have demonstrated that other effects are also present in addition to colour screening in a deconfined plasma [ 4 – 6 ]. First, it has been shown that over a wide range of interaction energies there is already a modification in the production of mesons in systems where a large volume of quark–gluon plasma does not appear to form, such as in proton–nucleus collisions [ 7 – 9 ].…”

Section: Introductionmentioning

confidence: 99%

Prompt and non-prompt $$J/\psi $$ J / ψ and $$\psi (2\mathrm {S})$$ ψ ( 2 S ) suppression at high transverse momentum in $$5.02~\mathrm {TeV}$$ 5.02 TeV Pb+Pb collisions with the ATLAS experiment

Aaboud¹,

Aad²,

Abbott³

et al. 2018

Eur. Phys. J. C

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A measurement of and production is presented. It is based on a data sample from Pb+Pb collisions at and pp collisions at recorded by the ATLAS detector at the LHC in 2015, corresponding to an integrated luminosity of and in Pb+Pb and pp, respectively. The measurements of per-event yields, nuclear modification factors, and non-prompt fractions are performed in the dimuon decay channel for GeV in dimuon transverse momentum, and in rapidity. Strong suppression is found in Pb+Pb collisions for both prompt and non-prompt , increasing with event centrality. The suppression of prompt is observed to be stronger than that of , while the suppression of non-prompt is equal to that of the non-prompt within uncertainties, consistent with the expectation that both arise from b-quarks propagating through the medium. Despite prompt and non-prompt arising from different mechanisms, the dependence of their nuclear modification factors on centrality is found to be quite similar.

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“…By extension, available theoretical predictions for the production rates at the LHC are rather uncertain. For recent reviews, the reader is guided to [1,2,3] along with some perspectives for the LHC [4].…”

Section: Introductionmentioning

confidence: 99%

On the mechanisms of heavy-quarkonium hadroproduction

2008

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We discuss the various mechanisms potentially at work in hadroproduction of heavy quarkonia in the light of computations of higher-order QCD corrections both in the Colour-Singlet (CS) and Colour-Octet (CO) channels and the inclusion of the contribution arising from the s-channel cut in the CS channel. We also discuss new observables meant to better discriminate between these different mechanisms.

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Perspectives on heavy-quarkonium production at the LHC

Cited by 33 publications

References 100 publications

Measurement of quarkonium production in proton–lead and proton–proton collisions at $$5.02~\mathrm {TeV}$$ 5.02 TeV with the ATLAS detector

Measurement of quarkonium production in proton–lead and proton–proton collisions at $$5.02~\mathrm {TeV}$$ 5.02 TeV with the ATLAS detector

Prompt and non-prompt $$J/\psi $$ J / ψ and $$\psi (2\mathrm {S})$$ ψ ( 2 S ) suppression at high transverse momentum in $$5.02~\mathrm {TeV}$$ 5.02 TeV Pb+Pb collisions with the ATLAS experiment

On the mechanisms of heavy-quarkonium hadroproduction

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