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Title: Bottomonium suppression using a lattice QCD vetted potential

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1418071
Grant/Contract Number:
SC0013470
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 1; Related Information: CHORUS Timestamp: 2018-01-25 08:18:52; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Krouppa, Brandon, Rothkopf, Alexander, and Strickland, Michael. Bottomonium suppression using a lattice QCD vetted potential. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.016017.
Krouppa, Brandon, Rothkopf, Alexander, & Strickland, Michael. Bottomonium suppression using a lattice QCD vetted potential. United States. doi:10.1103/PhysRevD.97.016017.
Krouppa, Brandon, Rothkopf, Alexander, and Strickland, Michael. 2018. "Bottomonium suppression using a lattice QCD vetted potential". United States. doi:10.1103/PhysRevD.97.016017.
@article{osti_1418071,
title = {Bottomonium suppression using a lattice QCD vetted potential},
author = {Krouppa, Brandon and Rothkopf, Alexander and Strickland, Michael},
abstractNote = {},
doi = {10.1103/PhysRevD.97.016017},
journal = {Physical Review D},
number = 1,
volume = 97,
place = {United States},
year = 2018,
month = 1
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.97.016017

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  • We present recent results on the in-medium modification of S- and P-wave bottomonium states around the deconfinement transition. Our study uses lattice QCD with N{sub f} = 2 + 1 light quark flavors to describe the non-perturbative thermal QCD medium between 140MeV < T < 249MeV and deploys lattice regularized non-relativistic QCD (NRQCD) effective field theory to capture the physics of heavy quark bound states immersed therein. The spectral functions of the {sup 3}S{sub 1} (ϒ) and {sup 3}P{sub 1} (χ{sub b1}) bottomonium states are extracted from Euclidean time Monte Carlo simulations using a novel Bayesian prescription, which provides highermore » accuracy than the Maximum Entropy Method. Based on a systematic comparison of interacting and free spectral functions we conclude that the ground states of both the S-wave (ϒ) and P-wave (χ{sub b1}) channel survive up to T = 249MeV. Stringent upper limits on the size of the in-medium modification of bottomonium masses and widths are provided.« less
  • We study the temperature dependence of bottomonium for temperatures in the range 0.4T{sub c} < T < 2.1T{sub c}, using nonrelativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for N{sub f} = 2 light flavors on a highly anisotropic lattice. We find that the Y is insensitive to the temperature in this range, while the x{sub b} propagators show a crossover from the exponential decay characterizing the hadronic phase to a power-law behavior consistent with nearly free dynamics at T {approx} 2T{sub c}.
  • Cited by 9
  • Recently, realistic lattice QCD calculations with 2+1 flavors of domain wall fermions and the Iwasaki gauge action have been performed by the RBC and UKQCD Collaborations. Here, results for the bottomonium spectrum computed on their gauge configurations of size 24{sup 3}x64 with a lattice spacing of approximately 0.11 fm and four different values for the light quark mass are presented. Improved lattice nonrelativistic QCD is used to treat the b quarks inside the bottomonium. The results for the radial and orbital energy splittings are found to be in good agreement with experimental measurements, indicating that systematic errors are small. Themore » calculation of the {upsilon}(2S)-{upsilon}(1S) energy splitting provides an independent determination of the lattice spacing. For the most physical ensemble it is found to be a{sup -1}=1.740(25)(19) GeV, where the first error is statistical/fitting and the second error is an estimate of the systematic errors due to the lattice nonrelativistic QCD action.« less