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Meson Screening Masses in (2+1)-Flavor QCD

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arxiv 1908.09552 v2 pith:XTTQRT45 submitted 2019-08-26 hep-lat hep-phnucl-th

Alexei Bazavov , Simon Dentinger , Heng-Tong Ding , Prasad Hegde , Olaf Kaczmarek , Frithjof Karsch , Edwin Laermann , Anirban Lahiri
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Swagato Mukherjee Hiroshi Ohno Peter Petreczky Rishabh Thakkar Hauke Sandmeyer Christian Schmidt Sayantan Sharma Patrick Steinbrecher
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classification hep-lathep-phnucl-th
keywords latticemassesquarkresultscalculationscorrespondinglesssimmass
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abstract

We present lattice QCD results for mesonic screening masses in the temperature range 140 MeV $\lesssim T \lesssim$ 2500 MeV. Our calculations were carried out using (2+1)-flavors of the Highly Improved Staggered Quark (HISQ) action, with a physical value for the strange quark mass and two values of the light quark mass corresponding to pion masses of 160 MeV and 140 MeV. Continuum-extrapolated results were obtained using calculations with a variety of lattice spacings corresponding to temporal lattice extents $N_\tau = 6 - 16$. We discuss the implications of these results for the effective restoration of various symmetries in the high temperature phase of QCD, as well as the approach toward the perturbative limit.

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Cited by 4 Pith papers

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  1. Leading-Order QCD Equation of State in Strong Magnetic Fields at Nonzero Baryon Chemical Potential

    hep-lat 2025-08 conditional novelty 6.0 of 10

    Continuum-estimated leading-order EoS coefficients in magnetized strangeness-neutral QCD at nonzero baryon chemical potential show temperature-band crossings in q1 and P2 and a possible sign change of the trace anomal...

  2. Probing the chiral and $U(1)$ axial symmetry restoration via meson susceptibilities in holographic QCD

    hep-ph 2026-03 conditional novelty 5.0 of 10

    In a soft-wall holographic QCD model, chiral symmetry restores at ~155 MeV while the U(1) axial symmetry restores near 190 MeV — a separation the authors present despite an admitted mismatch with lattice QCD below 175 MeV.

  3. Pseudoscalar Screening Mass at Finite Temperature and Magnetic Field from Lattice QCD with Physical Quark Masses

    hep-lat 2025-02 conditional novelty 4.0 of 10

    Continuum-estimated lattice QCD screening masses of neutral pseudoscalar mesons show a magnetic-field-induced minimum for pi and K, but not for the strange eta, near the QCD transition temperature.

  4. QCD Equation of State with Strong Magnetic Fields and Nonzero Baryon Density

    hep-lat 2025-02 conditional novelty 4.0 of 10

    Lattice QCD continuum estimates of leading-order baryon-density Taylor coefficients of the magnetized QCD equation of state show deviations from hadron gas and approach to a free gas at strong fields.

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