Speakers
Dr
Alexander Rothkopf
(Heidelberg University)Dr
Yukinao Akamatsu
(Stony Brook University)
Description
Elucidating the sequential suppression patterns of Bottomonium discovered in dilepton yields during run1 at the LHC urges theory to develop non-perturbative real-time descriptions of in-medium quark bound states out of equilibrium. The recent treatment of Bottomonium as open-quantum system [1,2] promises a viable path towards this goal.
Here we present results from a first simulation of quarkonium dynamics in a realistic quark-gluon plasma, based on the concept of stochastic potential [1]. The values of this proper potential is extracted from first principles (Nf=2+1) lattice QCD simulations and does not contain modeling input [3].
Initializing with the wave function of a localized quark-antiquark pair obtained in non-relativistic QCD effective theory [4], we solve the stochastic Schrödinger equation for Bottomonium according to the local temperature obtained from 2+1 dimensional hydrodynamics [5]. Including the effect of feed down after bottomonium hadronization, we compare our results with experimental data, in particular the centrality dependence of the bottomonium nuclear modification factor R_AA. Possible signatures of thermalization are discussed by comparing to the predictions of the statistical model of hadronization.
[1] Y. Akamatsu, A. Rothkopf, Phys. Rev. D85, 105011 (2012)
[2] Y. Akamatsu Phys. Rev. D91 056002 (2015)
[3] Y. Burnier, O. Kaczmarek, A. Rothkopf, Phys.Rev.Lett. 114 (2015), 082001
[4] J. Casalderrey-Solana, JHEP 1303 (2013) 091
[5] Y.Akamatsu, S.I. Inutsuka, C.Nonaka and M. Takamoto, J.Comput.Phys. 256 (2014) 34-54
Primary authors
Dr
Alexander Rothkopf
(Heidelberg University)
Dr
Yukinao Akamatsu
(Stony Brook University)
Co-authors
Prof.
Chiho Nonaka
(Nagoya University)
Prof.
Jorge Casalderrey-Solana
(University of Barcelona)
