Quarkonium production at the LHC: A data-driven analysis of remarkably simple experimental patterns

Faccioli, P.; Lourenço, C.; Krätschmer, I.; Araujo, M.; Seixas, J.; Knünz, V.

doi:10.1016/j.physletb.2017.09.006

Cited by 21 publications

(34 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result consolidates the success and relevance of the simple, factorizable and universal description of quarkonium production discussed in Refs. [4,21], further urging investigations on its consistency with non-relativistic QCD [22] and on the fundamental origin of such unexpected simplicity, as recently argued in Ref. [23].…”

Section: Discussionmentioning

confidence: 87%

The fate of quarkonia in heavy-ion collisions at LHC energies: a unified description of the sequential suppression patterns

Faccioli

Lourenço

2018

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

Measurements made at the LHC have shown that the production of the J/ψ, ψ(2S), Υ (1S) and Υ (2S) quarkonia is suppressed in Pb-Pb collisions, with respect to the extrapolation of the pp production yields. The ψ(2S) and Υ (2S) states are more strongly suppressed than the ground states and the level of the suppression changes with the centrality of the collision. We show that the measured patterns can be reproduced by a simple model, where all quarkonia are treated in a unified way, starting from the recent realisation that, in pp collisions, the probability of quarkonium formation has a universal dependence on the binding-energy of the bound state. The hot-medium suppression effect is parametrized by a penalty factor in the binding energy, identical for all (S-and P-wave) charmonium and bottomonium states, including those that indirectly contribute to the measured results through feed-down decays. This single parameter, computed through a global fit of all available suppression patterns, fully determines the hierarchy of nuclear effects, for all states and centrality bins. The resulting faithful description of the data provides convincing evidence in favour of the conjecture of sequential quarkonium suppression induced by QGP formation.PACS. 12.38.Aw General properties of QCD -12.38.Qk Experimental tests of QCD -12.38.Mh Quarkgluon plasma

show abstract

Section: Discussionmentioning

confidence: 87%

The fate of quarkonia in heavy-ion collisions at LHC energies: a unified description of the sequential suppression patterns

Faccioli

Lourenço

2018

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…The production or suppression of quarkonia has been investigated either theoretically or experimentally in Refs. [2][3][4][5][6][7][8][9][10][11][12], and the disassociation temperature has been studied in Refs. [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Dissociation of Quarkonium in Hot and Dense Media in an Anisotropic Plasma in the Nonrelativistic Quark Model

Abu‐Shady

Mansour

Ahmadov

2019

Advances in High Energy Physics

View full text Add to dashboard Cite

In this paper, quarkonium dissociation is investigated in an anisotropic plasma in the hot and dense media. For that purpose, the multidimensional Schrödinger equation is solved analytically by Nikiforov-Uvarov (NU) method for the real part of the potential in an anisotropic medium. The binding energy and dissociation temperature are calculated. In comparison with an isotropic medium, the binding energy of quarkonium is enhanced in the presence of an anisotropic medium. The present results show that the dissociation temperature increases with increasing anisotropic parameter for 1S state of the charmonium and bottomonium. We observe that the lower baryonic chemical potential has small effect in both isotropic and anisotropic media. A comparison is presented with other pervious theoretical works.

show abstract

“…Second, the binding of the quark-antiquark pair can be described in terms of lattice-calculable nonrelativistic potentials [7][8][9]. Particularly stringent tests of current theories of quarkonium production can be achieved by examining the individual spin states of the quarkonium multiplets [10][11][12][13][14].…”

mentioning

confidence: 99%

Observation of theχb1(3P)andχb

Sirunyan¹,

Tumasyan²,

Adam³

et al. 2018

Phys. Rev. Lett.

View full text Add to dashboard Cite

The χ_{b1}(3P) and χ_{b2}(3P) states are observed through their ϒ(3S)γ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb^{-1}. The ϒ(3S) mesons are identified through their dimuon decay channel, while the low-energy photons are detected after converting to e^{+}e^{-} pairs in the silicon tracker, leading to a χ_{b}(3P) mass resolution of 2.2 MeV. This is the first time that the J=1 and 2 states are well resolved and their masses individually measured: 10513.42±0.41(stat)±0.18(syst) MeV and 10524.02±0.57(stat)±0.18(syst) MeV; they are determined with respect to the world-average value of the ϒ(3S) mass, which has an uncertainty of 0.5 MeV. The mass splitting is measured to be 10.60±0.64(stat)±0.17(syst) MeV.

show abstract

Quarkonium production at the LHC: A data-driven analysis of remarkably simple experimental patterns

Cited by 21 publications

References 45 publications

The fate of quarkonia in heavy-ion collisions at LHC energies: a unified description of the sequential suppression patterns

The fate of quarkonia in heavy-ion collisions at LHC energies: a unified description of the sequential suppression patterns

Dissociation of Quarkonium in Hot and Dense Media in an Anisotropic Plasma in the Nonrelativistic Quark Model

Observation of theχb1(3P)andχb

Contact Info

Product

Resources

About