Results 21 to 30 of about 737,184 (280)
Pion valence quark distribution from matrix element calculated in lattice QCD [PDF]
Physical Review D, 2019 We present the first exploratory lattice QCD calculation of the pion valence quark distribution extracted from spatially separated current-current correlations in coordinate space.
R. Sufian +5 more
semanticscholar +1 more source
International Journal of Modern Physics A, 2005 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.
Alan Gray +28 more
openaire +6 more sources
Leading hadronic contribution to (g−2)μ from lattice QCD with Nf=2+1 flavors of O(a) improved Wilson quarks [PDF]
Physical Review D, 2019 The comparison of the theoretical and experimental determinations of the anomalous magnetic moment of the muon $(g-2)_\mu$ constitutes one of the strongest tests of the Standard Model at low energies.
A. G'erardin +8 more
semanticscholar +1 more source
QCD ON A TRANSVERSE LATTICE [PDF]
Particle Physics Phenomenology, 2001 We present results from a transverse lattice study of low lying mesons. Special emphasis is put on the issue of Lorentz invariant energy-momentum dispersion relations for these mesons. The light-cone wave function for the $ $ obtained in this framework is very close to its asymptotic shape.
Matthias Burkardt, Sudip K. Seal
openaire +4 more sources
Localization in lattice QCD [PDF]
Physical Review D, 2003 In this paper, we examine the phase diagram of quenched QCD with two flavors of Wilson fermions, proposing the following microscopic picture. The super-critical regions inside and outside the Aoki phase are characterized by the existence of a density of near-zero modes of the (hermitian) Wilson-Dirac operator, and thus by a non-vanishing pion ...
Maarten Golterman, Yigal Shamir
openaire +3 more sources
Hadronic-vacuum-polarization contribution to the muon’s anomalous magnetic moment from four-flavor lattice QCD [PDF]
Physical Review D, 2019 We calculate the contribution to the muon anomalous magnetic moment hadronic vacuum polarization from the connected diagrams of up and down quarks, omitting electromagnetism.
C. Davies +19 more
semanticscholar +1 more source
A Guide to Light-Cone PDFs from Lattice QCD: An Overview of Approaches, Techniques, and Results [PDF]
Advances in High Energy Physics, 2018 Within the theory of Quantum Chromodynamics (QCD), the rich structure of hadrons can be quantitatively characterized, among others, using a basis of universal nonperturbative functions: parton distribution functions (PDFs), generalized parton ...
K. Cichy, M. Constantinou
semanticscholar +1 more source
Dispersive determination of the HVP contribution to the muon g − 2 [PDF]
EPJ Web of Conferences, 2023 The determination of hadronic vacuum polarization (HVP) from e+e− → hadrons cross-section data, in the energy region relevant for the anomalous magnetic moment of the muon, has recently been challenged by lattice-QCD calculations, especially for the ...
Hoferichter Martin
doaj +1 more source
European Physical Journal C: Particles and Fields, 2023 We perform an analysis of Lattice QCD data on baryon octet and decuplet masses based on the chiral SU(3) Lagrangian. Low-energy constants (LEC) are adjusted to describe baryon masses from a large set of CLS ensembles, where finite-box and discretization ...
Matthias F. M. Lutz +2 more
doaj +1 more source
Charged multihadron systems in lattice QCD+QED [PDF]
Physical Review D, 2020 Systems with the quantum numbers of up to twelve charged and neutral pseudoscalar mesons, as well as one-, two-, and three-nucleon systems, are studied using dynamical lattice quantum chromodynamics and quantum electrodynamics (QCD+QED) calculations and ...
S. Beane +15 more
semanticscholar +1 more source