Gluon dissociation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>beyond the dipole approximation

Liu, Yunpeng; Ko, Che Ming; Song, Taesoo

doi:10.1103/physrevc.88.064902

Cited by 11 publications

(10 citation statements)

References 31 publications

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“…( 2). For the quarkonium reaction rate in the QGP, two main mechanisms have been considered: gluo-dissociation [18,19,20,21], g+Q → Q+ Q (also referred to a "singlet-to-octet" mechanism) and inelastic parton scattering [22,23,24], p + Q → p + Q + Q with p = q, q, g (also referred to as "quasi-free dissociation" or "Landau damping" of the exchanged gluon between Q and Q). In weak coupling the latter, although naively of higher power in α s , takes over from the former if the binding energy is much smaller than the Debye mass, E B mD ∼ gT .…”

Section: Theoretical Toolsmentioning

confidence: 99%

Theoretical Perspective on Quarkonia from SPS via RHIC to LHC

Rapp

2017

Nuclear Physics A

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The objective of this paper is to assess the current theoretical understanding of the extensive set of quarkonium observables (for both charmonia and bottomonia) that have been attained in ultrarelativistic heavy-ion collisions over two orders of magnitude in center-of-mass energy. We briefly lay out and compare the currently employed theoretical frameworks and their underlying transport coefficients, and then analyze excitation functions of quarkonium yields to characterize the nature of the varying production mechanisms. We argue that an overall coherent picture of suppression and regeneration mechanisms emerges which enables to deduce insights on the properties of the in-medium QCD force from SPS via RHIC to LHC, and forms a basis for future quantitative studies.

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Section: Theoretical Toolsmentioning

confidence: 99%

Theoretical Perspective on Quarkonia from SPS via RHIC to LHC

Rapp

2017

Nuclear Physics A

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“…The latter achieves a good description of the collision energy and rapidity dependence of ψ ′ and J/ψ production in d-Au and p-Pb collisions including expected shadowing effects on the parton distribution functions (see also Ref. [17]). However, rather unexpected results have emerged from recent measurements by the CMS collaboration [18] for the double-ratio of the nuclear modification factor, R AA , of ψ ′ over J/ψ in 2.76 TeV Pb-Pb collisions at the LHC (preliminary results are also available from ALICE [19]).…”

Section: Introductionmentioning

confidence: 98%

Sequential regeneration of charmonia in heavy-ion collisions

2015

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We investigate the production of ψ(2S) in nuclear collisions at RHIC and LHC energies. We first address charmonium production in 200 GeV d-Au collisions at RHIC; the strong suppression of ψ ′ mesons observed in these reactions indicates mechanisms beyond initial cold nuclear matter effects. We find that a more complete treatment of hadronic dissociation reactions leads to appreciable ψ ′ suppression in the hadronic medium of an expanding fireball background for d-Au collisions. When implementing the updated hadronic reaction rates into a fireball for 2.76 TeV Pb-Pb collisions at LHC, the regeneration of ψ ′ mesons occurs significantly later than for J/ψ's. Despite a smaller total number of regenerated ψ ′ , the stronger radial flow at their time of production induces a marked enhancement of their RAA relative to J/ψ's in a transverse-momentum range of pt ≃ 3-6 GeV. We explore the consequences and uncertainties of this "sequential regeneration" mechanism on the RAA double ratio and find that it can reproduce the trends observed in recent CMS data.

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“…6. In [221][222][223] (also see [224]) the leading order calculation of the gluo-dissociation rate by was extended to next to leading order. In particular, in Ref.…”

Section: Phenomenologymentioning

confidence: 99%

Quarkonium propagation in the quark–gluon plasma

Sharma

2021

Eur. Phys. J. Spec. Top.

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In relativistic heavy ion collisions at RHIC and the LHC, a quark-gluon plasma (QGP) is created for a short duration of about 10 fm/c. Quarkonia (bound states of cc and bb) are sensitive probes of this phase on length scales comparable to the size of the bound states which are less than 1 fm. Observations of quarkonia in these collisions provide us with a lot of information about how the presence of a QGP affects various quarkonium states. This has motivated the development of the theory of heavy quarks and their bound states in a thermal medium, and its application to the phenomenology of quarkonia in heavy ion collisions. We review some of these developments here.

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Gluon dissociation ofJ/ψbeyond the dipole approximation

Cited by 11 publications

References 31 publications

Theoretical Perspective on Quarkonia from SPS via RHIC to LHC

Theoretical Perspective on Quarkonia from SPS via RHIC to LHC

Sequential regeneration of charmonia in heavy-ion collisions

Quarkonium propagation in the quark–gluon plasma

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