Bottomonium above deconfinement in lattice nonrelativistic QCD

G. Aarts; S. Kim; M. P. Lombardo; M. B. Oktay; S. M. Ryan; D. K. Sinclair; J. -I. Skullerud

doi:10.1103/PhysRevLett.106.061602

Bottomonium above deconfinement in lattice nonrelativistic QCD

High Energy Physics - Lattice 2011-02-23 v1 High Energy Physics - Phenomenology Nuclear Theory

Authors: G. Aarts , S. Kim , M. P. Lombardo , M. B. Oktay , S. M. Ryan , D. K. Sinclair , J. -I. Skullerud

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Abstract

We study the temperature dependence of bottomonium for temperatures in the range $0.4 T_c < T < 2.1 T_c$ , using nonrelativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for $N_f=2$ light flavors on a highly anisotropic lattice. We find that the $\Upsilon$ is insensitive to the temperature in this range, while the $\chi_b$ propagators show a crossover from the exponential decay characterizing the hadronic phase to a power-law behaviour consistent with nearly-free dynamics at $T \simeq 2 T_c$ .

Keywords

bottomonium lattice QCD nonrelativistic QCD deconfinement Upsilon chi_b temperature dependence

Cite

@article{arxiv.1010.3725,
  title  = {Bottomonium above deconfinement in lattice nonrelativistic QCD},
  author = {G. Aarts and S. Kim and M. P. Lombardo and M. B. Oktay and S. M. Ryan and D. K. Sinclair and J. -I. Skullerud},
  journal= {arXiv preprint arXiv:1010.3725},
  year   = {2011}
}

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4 pages, 3 figures

Bottomonium above deconfinement in lattice nonrelativistic QCD

Abstract

Keywords

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