Heavy quarkonium suppression beyond the adiabatic limit

Boyd, Jacob; Cook, Thomas D.; Islam, Ajaharul; Strickland, Michael

doi:10.1103/physrevd.100.076019

Cited by 25 publications

(36 citation statements)

References 49 publications

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“…1 This approximation allows us to straightforwardly go beyond previous phenomenological works which made use of the adiabatic approximation instead of real-time solutions [20,[45][46][47][48][49][50][51][52][53]. In a previous paper [54], we made a preliminary investigation of the effects of relaxing the adiabatic approximation, finding that there were potentially important effects on the survival probability of the states.…”

Section: Introductionmentioning

confidence: 99%

Bottomonium suppression and elliptic flow using Heavy Quarkonium Quantum Dynamics

Islam

Strickland

2021

J. High Energ. Phys.

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We introduce a framework called Heavy Quarkonium Quantum Dynamics (HQQD) which can be used to compute the dynamical suppression of heavy quarkonia propagating in the quark-gluon plasma using real-time in-medium quantum evolution. Using HQQD we compute large sets of real-time solutions to the Schrödinger equation using a realistic in-medium complex-valued potential. We sample 2 million quarkonia wave packet trajectories and evolve them through the QGP using HQQD to obtain their survival probabilities. The computation is performed using three different HQQD model parameter sets in order to estimate our systematic uncertainty. After taking into account final state feed down we compare our results to existing experimental data for the suppression and elliptic flow of bottomonium states and find that HQQD predictions are good agreement with available data for RAA as a function of Npart and pT collected at $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 5.02 TeV. In the case of v2 for the various states, we find that the path-length dependence of ϒ(1s) suppression results in quite small v2 for ϒ(1s). Our prediction for the integrated elliptic flow for ϒ(1s) in the 10−90% centrality class, which now includes an estimate of the systematic error, is v2[ϒ(1s)] = 0.003 ± 0.0007 ±$$ {}_{0.0013}^{0.0006} $$ 0.0013 0.0006 . We also find that, due to their increased suppression, excited bottomonium states have a larger elliptic flow. Based on this observation we make predictions for v2[ϒ(2s)] and v2[ϒ(3s)] as a function of centrality and transverse momentum.

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Section: Introductionmentioning

confidence: 99%

Bottomonium suppression and elliptic flow using Heavy Quarkonium Quantum Dynamics

Islam

Strickland

2021

J. High Energ. Phys.

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“…For the background, Ref. [60] considered a transversally homogeneous and boost-invariant ideal fluid with a temperature which decreases as T (τ) = T 0 (τ 0 /τ) 1/3 . In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In order to go beyond the adiabatic approximation one can instead solve the time-dependent Schrödinger equation with a time-dependent complex in-medium heavy quarkonium potential. In a recent paper [60], it was demonstrated that one can numerically solve the Schrödinger equation in real-time using an efficient split-operator method and extract the survival probability directly from the final quantum wave function. In this case, one uses time-dependent eigenstates and computes the overlap of these with the time-evolved wave function.…”

Section: First Steps Beyond the Adiabatic Approximationmentioning

confidence: 99%

“…For a radial potential, the starting point is the expansion of the quantum mechanical wavefunction [60] PoS(High-pT2019)020…”

Section: First Steps Beyond the Adiabatic Approximationmentioning

confidence: 99%

“…At any time during the evolution one can project on the instantaneous wave functions of the timedependent potential. These are determined by a modified point-and-shoot method [60]. Having obtained the full numerical solution, one can compare the resulting survival probabilities with those obtained using the adiabatic approximation with the same underlying complex potential.…”

Section: Perform Inversementioning

confidence: 99%

See 2 more Smart Citations

Using bottomonium production as a tomographic probe of the quark-gluon plasma

Strickland¹

2019

Proceedings of 13th International Workshop in High pT Physics in the RHIC and LHC Era — PoS(High-pT2019)

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The suppression of bottomonia in ultrarelativistic heavy-ion collisions is a smoking gun for the production of a strongly interacting final state in ultrarelativistic heavy-ion collisions. Furthermore, these final state interactions are consistent with the production of a hot hydrodynamically expanding quark-gluon plasma with initial temperatures on the order of 600-700 MeV at LHC collision energies. Models which incorporate plasma screening and bound-state breakup based on high-temperature quantum chromodynamics are in good agreement with the centrality, transversemomentum, and rapidity dependence of the suppression seen in the highest energy LHC Pb-Pb collisions. The models of heavy-quark bound state breakup/formation are coupled to the soft dynamics of the quark-gluon plasma using 3+1d relativistic anisotropic hydrodynamics. At later times, excited state feed-down is taken into account using independently constrained excited state feed down fractions. Comparisons with LHC experimental data are consistent with primordial suppression of all bottomonium states, with states having the lowest binding energies suffering the most suppression. In this proceedings contribution, I will review recent work to (a) include the effects of regeneration on bottomonium production and (b) to assess the effects of a rapidly changing in-medium potential on bottomonium production in the quark-gluon plasma.

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Bottomonium suppression in an open quantum system using the quantum trajectories method

Brambilla

Escobedo

Strickland

et al. 2021

J. High Energ. Phys.

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We solve the Lindblad equation describing the Brownian motion of a Coulombic heavy quark-antiquark pair in a strongly coupled quark-gluon plasma using the highly efficient Monte Carlo wave-function method. The Lindblad equation has been derived in the framework of pNRQCD and fully accounts for the quantum and non-Abelian nature of the system. The hydrodynamics of the plasma is realistically implemented through a 3+1D dissipative hydrodynamics code. We compute the bottomonium nuclear modification factor and compare with the most recent LHC data. The computation does not rely on any free parameter, as it depends on two transport coefficients that have been evaluated independently in lattice QCD. Our final results, which include late-time feed down of excited states, agree well with the available data from LHC 5.02 TeV PbPb collisions.

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Heavy quarkonium suppression beyond the adiabatic limit

Cited by 25 publications

References 49 publications

Bottomonium suppression and elliptic flow using Heavy Quarkonium Quantum Dynamics

Bottomonium suppression and elliptic flow using Heavy Quarkonium Quantum Dynamics

Using bottomonium production as a tomographic probe of the quark-gluon plasma

Bottomonium suppression in an open quantum system using the quantum trajectories method

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