Results 1 to 10 of about 24,203 (137)

Quantum chromodynamics with advanced computing [PDF]

, 2008
We survey results in lattice quantum chromodynamics from groups in the USQCD Collaboration. The main focus is on physics, but many aspects of the discussion are aimed at an audience of computational physicists.Comment: 17 pp.
, , , A S Kronfeld, Alcaraz J (LEP), Beane S R, Becher T, Bernard C (Fermilab Lattice, Bernard C (MILC), Catterall S, Catterall S, Della Morte M, Detar C E (ILDG), Detmold W (NPLQCD), Dixon L J, Eisenstein B I (CLEO), Fodor Z, Giedt J, Glimm J, Hägler P, Jüttner A, Kaplan D B, Kinoshita T, Laiho J (Fermilab Lattice, Lepage G P, Lin H W, McNeile C, Schmidt C, Schwinger J (ed), Van de Water R S (USQCD), Yao W M   +30 more
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Thermodynamics of the QCD plasma and the large-N limit [PDF]

, 2009
The equilibrium thermodynamic properties of the SU(N) plasma at finite temperature are studied non-perturbatively in the large-N limit, via lattice simulations.
C. E. DeTar, J. M. Maldacena, M. Laine, M. Teper, Marco Panero   +4 more
core   +4 more sources

Theoretical progress in describing the B-meson lifetimes [PDF]

, 2001
The present status of the theoretical estimates of the difference between the widths of the neutral Bs-mesons and of the B-meson lifetime ratios is reviewed. In particular, the lattice results for the matrix elements of the relevant (delta B=2)-operators
Becirevic, Damir
core   +2 more sources

Non-perturbative quark mass renormalisation and running in $N_f=3$ QCD [PDF]

, 2018
We determine from first principles the quark mass anomalous dimension in Nf=3 QCD between the electroweak and hadronic scales. This allows for a fully non-perturbative connection of the perturbative and non-perturbative regimes of the Standard Model in ...
Campos, Isabel, Fritzsch, Patrick, Pena, Carlos, Preti, David, Ramos, Alberto, Vladikas, Anastassios   +5 more
core   +1 more source

Current Physics Results from Staggered Chiral Perturbation Theory [PDF]

, 2006
We review several results that have been obtained using lattice QCD with the staggered quark formulation. Our focus is on the quantities that have been calculated numerically with low statistical errors and have been extrapolated to the physical quark ...
Blum T., C. AUBIN, Sharpe S. R.
core   +3 more sources

Hadrons and Nuclei

, 2019
This document is one of a series of whitepapers from the USQCD collaboration. Here, we discuss opportunities for lattice QCD calculations related to the structure and spectroscopy of hadrons and nuclei.
Detmold, William, Dudek, Jozef J., Edwards, Robert G., Engelhardt, Michael, Lin, Huey-Wen, Meinel, Stefan, Orginos, Kostas, Shanahan, Phiala   +7 more
core   +1 more source

SU(N) gauge theories in the presence of a topological term [PDF]

, 2007
We review recent results on the theta dependence of the ground-state energy and spectrum of four-dimensional SU(N) gauge theories, where theta is the coefficient of the CP-violating topological term F-Fdual in the Lagrangian.
Del Debbio, Luigi, Panagopoulos, Haralambos, Vicari, Ettore   +2 more
core   +3 more sources

Opportunities for lattice QCD in quark and lepton flavor physics

, 2019
This document is one of a series of whitepapers from the USQCD collaboration. Here, we discuss opportunities for lattice QCD in quark and lepton flavor physics.
Blum, Tom, Christ, Norman H., El-Khadra, Aida X., Hansen, Maxwell T., Kronfeld, Andreas S., Laiho, Jack, Lehner, Christoph, Meinel, Stefan, Neil, Ethan T., Sharpe, Stephen R., Van de Water, Ruth S.   +10 more
core   +1 more source

The QCD equation of state at finite density from analytical continuation [PDF]

, 2016
We determine the equation of state of QCD at finite chemical potential, to order $(\mu_B/T)^6$, for a system of 2+1 quark flavors. The simulations are performed at the physical mass for the light and strange quarks on several lattice spacings; the ...
Bellwied, R., Borsányi, S., Fodor, Z., Guenther, J. N., Katz, S. D., Pásztor, A., Ratti, C., Szabo, Kalman   +7 more
core   +4 more sources

The strong coupling from a nonperturbative determination of the $\Lambda$ parameter in three-flavor QCD [PDF]

, 2017
We present a lattice determination of the $\Lambda$ parameter in three-flavor QCD and the strong coupling at the Z pole mass. Computing the nonperturbative running of the coupling in the range from $0.2\,$GeV to $70\,$GeV, and using experimental input ...
Alberto Ramos, Hubert Simma, Mattia Bruno, Mattia Dalla Brida, null null, Patrick Fritzsch, Rainer Sommer, Stefan Schaefer, Stefan Sint, Tomasz Korzec   +9 more
core   +2 more sources