Quarkonium in a hot medium

Petreczky, Péter

doi:10.1088/0954-3899/37/9/094009

Cited by 51 publications

(51 citation statements)

References 60 publications

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“…1. Qualitatively the temperature dependence of the singlet free energy obtained in our calculations is similar to the temperature dependence of the singlet free energy obtained earlier with the p4 action [14,15] but there quantitative differences. For the lowest temperature both the potential and the singlet free energy agree with the zero temperature result.…”

Section: Numerical Resultssupporting

confidence: 89%

Static potential and singlet free energy at non-zero temperature

Bazavov

Petreczky

2013

J. Phys.: Conf. Ser.

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Section: Numerical Resultssupporting

confidence: 89%

Static potential and singlet free energy at non-zero temperature

Bazavov

Petreczky

2013

J. Phys.: Conf. Ser.

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“…Lattice calculations of this quantity with dynamical quarks have been reported [923][924][925][926][927][928]. The logarithm of the singlet correlation function, also called the singlet free energy, is shown in Fig.…”

Section: Color Screening and Deconfinementmentioning

confidence: 99%

“…In practice, however, this turns out to be a very difficult [928,929] task because the time extent is limited to 1/T (see the discussion in [897] and references therein). Lattice artifacts in the spectral functions at high energies ω are also a problem when analyzing the correlation functions calculated on the lattice [930].…”

Section: Quarkonium Spectral Functions and Quarkonium Potentialmentioning

confidence: 99%

Heavy quarkonium: progress, puzzles, and opportunities

Brambilla¹,

Eidelman²,

Heltsley³

et al. 2011

Advances in the Physics of Particles and Nuclei

103

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A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the B-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations at BESIII, the LHC, RHIC, FAIR, the Super Flavor and/or Tau-Charm factories, JLab, the ILC, and beyond. The list of newly-found conventional states expanded to include hc(1P ), χc2(2P ), B + c , and η b (1S). In addition, the unexpected and still-fascinating X(3872) has been joined by * Editors † Section coordinators ‡ Corresponding author: bkh2@cornell.edu more than a dozen other charmonium-and bottomonium-like "XY Z" states that appear to lie outside the quark model. Many of these still need experimental confirmation. The plethora of new states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of cc, bb, and bc bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. Lattice QCD has grown from a tool with computational possibilities to an industrialstrength effort now dependent more on insight and innovation than pure computational power. New effective field theories for the description of quarkonium in different regimes have been developed and brought to a high degree of sophistication, thus enabling precise and solid theoretical predictions. Many expected decays and transitions have either been measured with precision or for the first time, but the confusing patterns of decays, both above and below open-flavor thresholds, endure and have deepened. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hotand cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.

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“…where m b = 4.7 GeV, a = 0.385, σ = 0.223 GeV 2 [41], and the last term is a temperature-and spin-independent finite-quark-mass correction taken from Ref. [42].…”

mentioning

confidence: 99%

Bottomonia suppression in 2.76 TeV Pb-Pb collisions

2015

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We compute the QGP suppression of Upsilon(1s), Upsilon(2s), Upsilon(3s), chi_b1, and chi_b2 states in sqrt(s_NN)=2.76 TeV Pb-Pb collisions. Using the suppression of each of these states, we estimate the inclusive R_AA for the Upsilon(1s) and Upsilon(2s) states as a function of N_part, y, and p_T including the effect of excited state feed down. We find that our model provides a reasonable description of preliminary CMS results for the N_part-, y-, and p_T-dependence of R_AA for both the Upsilon(1s) and Upsilon(2s). Comparing to our previous model predictions, we find a flatter rapidity dependence, thereby reducing some of the tension between our model and ALICE forward-rapidity results for Upsilon(1s) suppression.Comment: 5 pages, 4 figures; tsv files for all plots included in "anc" folder of the submissio

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Quarkonium in a hot medium

Abstract: Abstract. I review recent progress in studying quarkonium properties in hot medium as well as possible consequences for quarkonium production in heavy ion collisions.

Cited by 51 publications

References 60 publications

Static potential and singlet free energy at non-zero temperature

Static potential and singlet free energy at non-zero temperature

Heavy quarkonium: progress, puzzles, and opportunities

Bottomonia suppression in 2.76 TeV Pb-Pb collisions

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