4.8 Article

Bottomonium above Deconfinement in Lattice Nonrelativistic QCD

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PHYSICAL REVIEW LETTERS
卷 106, 期 6, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.061602

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资金

  1. STFC
  2. Korea government (MEST) [2010-0022219]
  3. U.S. Department of Energy [DE-AC02-06CH11357]
  4. Science Foundation Ireland [08-RFP-PHY1462]
  5. Research Executive Agency (REA) of the European Union [PITN-GA-2009-238353]
  6. STFC [ST/H008829/1, ST/G000506/1, ST/J00040X/1] Funding Source: UKRI
  7. Science Foundation Ireland (SFI) [08/RFP/PHY1462] Funding Source: Science Foundation Ireland (SFI)
  8. Science and Technology Facilities Council [ST/J00040X/1, ST/H008829/1, ST/G000506/1] Funding Source: researchfish
  9. National Research Foundation of Korea [2010-0022219] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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We study the temperature dependence of bottomonium for temperatures in the range 0.4T(c) < T < 2.1T(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 Y is insensitive to the temperature in this range, while the chi(b) propagators showa crossover from the exponential decay characterizing the hadronic phase to a power-law behavior consistent with nearly free dynamics at T similar or equal to 2T(c).

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