Results 21 to 30 of about 943,876 (253)
Parton distributions and lattice-QCD calculations: Toward 3D structure [PDF]
Progress in Particle and Nuclear Physics, 2020 The strong force which binds hadrons is described by the theory of Quantum Chromodynamics (QCD). Determining the character and manifestations of QCD is one of the most important and challenging outstanding issues necessary for a comprehensive ...
M. Constantinou +26 more
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Progress on QCD properties in strong magnetic fields from lattice QCD
He jishu, 2023 We review the current status of quantum chromodynamics (QCD) properties in strong magnetic fields from lattice QCD. After a general introduction, we briefly present the implementation of a background magnetic field onto a lattice and discuss the recent ...
DING Hengtong, LI Shengtai, LIU Junhong
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Lattice Study of QCD Properties at the “Govorun” Supercomputer [PDF]
EPJ Web of Conferences, 2020 This report is devoted to Lattice QCD simulations carried out at the “Govorun” supercomputer. The basics of Lattice QCD methodology, the main Lattice QCD algorithms and the most numerically demanding routines are reviewed.
Astrakhantsev Nikita +3 more
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Skewness, kurtosis, and the fifth and sixth order cumulants of net baryon-number distributions from lattice QCD confront high-statistics STAR data [PDF]
Physical Review D, 2020 We present new results on up to sixth-order cumulants of net baryon-number fluctuations at small values of the baryon chemical potential, I¼B, obtained in lattice QCD calculations with physical values of light and strange quark masses.
A. Bazavov +14 more
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Thermal Transitions in Dense Two-Colour QCD [PDF]
EPJ Web of Conferences, 2022 The infamous sign problem makes it impossible to probe dense (baryon density μB > 0) QCD at temperatures near or below the deconfinement threshold. As a workaround, one can explore QCD-like theories such as twocolour QCD (QC2D) which don’t suffer from ...
Lawlor Dale +3 more
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Consistency of hadronic vacuum polarization between lattice QCD and the R ratio [PDF]
Physical Review D, 2020 There are emerging tensions for theory results of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment both within recent lattice QCD calculations and between some lattice QCD calculations and R-ratio results. In this paper
C. Lehner, A. Meyer
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International Journal of Modern Physics A, 2006 In the past year, we calculated with lattice QCD three quantities that were unknown or poorly known. They are the q2 dependence of the form factor in semileptonic D → Klν decay, the decay constant of the D meson, and the mass of the Bc meson. In this talk, we summarize these calculations, with emphasis on their (subsequent) confirmation by experiments.
S. Kronfeld, Andreas +26 more
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The negative-parity spin-1/2 Λ baryon spectrum from lattice QCD and effective theory
Physics Letters B, 2021 The spectrum of the negative-parity spin-1/2 Λ baryons is studied using lattice QCD and hadronic effective theory in a unitarized coupled-channel framework.
Rafael Pavao +5 more
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On the role of isospin violation in the pion–nucleon σ-term
Physics Letters B, 2023 In recent years, a persistent tension between phenomenological and lattice QCD determinations of the pion–nucleon σ-term σπN has developed. In particular, lattice-QCD calculations have matured to the point that isospin-violating effects need to be ...
Martin Hoferichter +3 more
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Neutral B -meson mixing from full lattice QCD at the physical point [PDF]
Physical Review D, 2019 We calculate the bag parameters for neutral $B$-meson mixing in and beyond the Standard Model, in full four-flavor lattice QCD for the first time. We work on gluon field configurations that include the effect of $u$, $d$, $s$, and $c$ sea quarks with the
R. Dowdall +6 more
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