433 citations · 3.3k across the 72 of their papers we have counts for
65 papers · 1 filter
Gauge-equivariant pooling layers for preconditioners in lattice QCD
Christoph Lehner, Tilo Wettig
We demonstrate that gauge-equivariant pooling and unpooling layers can perform as well as traditional restriction and prolongation layers in multigrid preconditioner models for lat…
Isospin 0 and 2 two-pion scattering at physical pion mass using distillation with periodic boundary conditions in lattice QCD
Mattia Bruno, Daniel Hoying, Taku Izubuchi +3
The two pion channel in Lattice QCD has long been a primary testing ground for studying multiparticle scattering in finite volume QCD. With the development of sophisticated techniq…
Hadronic light-by-light contribution to the muon anomaly from lattice QCD with infinite volume QED at physical pion mass
Thomas Blum, Norman Christ, Masashi Hayakawa +5
The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment, )/2, is computed in the infinite volume QED framework with lattice QCD. We report $…
Gauge-equivariant neural networks as preconditioners in lattice QCD
Christoph Lehner, Tilo Wettig
We demonstrate that a state-of-the art multi-grid preconditioner can be learned efficiently by gauge-equivariant neural networks. We show that the models require minimal re-trainin…
Methods for high-precision determinations of radiative-leptonic decay form factors using lattice QCD
Davide Giusti, Christopher F. Kane, Christoph Lehner +2
We present a study of lattice-QCD methods to determine the relevant hadronic form factors for radiative leptonic decays of pseudoscalar mesons. We provide numerical results for $D_…
Isospin 0 and 2 two-pion scattering at physical pion mass using all-to-all propagators with periodic boundary conditions in lattice QCD
Thomas Blum, Peter A. Boyle, Mattia Bruno +9
A study of two-pion scattering for the isospin channels, and , using lattice QCD is presented. Möbius domain wall fermions on top of the Iwasaki-DSDR gauge action for gl…
Use of Schwinger-Dyson equation in constructing an approximate trivializing map
Peter Boyle, Taku Izubuchi, Luchang Jin +4
We construct an approximate trivializing map by using a Schwinger-Dyson equation. The advantage of this method is that: (1) The basis for the flow kernel can be chosen arbitrarily…
Lattice QCD and Particle Physics
Andreas S. Kronfeld, Tanmoy Bhattacharya, Thomas Blum +79
Contribution from the USQCD Collaboration to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021).
A lattice QCD perspective on weak decays of b and c quarks Snowmass 2022 White Paper
Peter A. Boyle, Bipasha Chakraborty, Christine T. H. Davies +32
Lattice quantum chromodynamics has proven to be an indispensable method to determine nonperturbative strong contributions to weak decay processes. In this white paper for the Snowm…
Discovering new physics in rare kaon decays
Thomas Blum, Peter Boyle, Mattia Bruno +20
The decays and mixing of mesons are remarkably sensitive to the weak interactions of quarks and leptons at high energies. They provide important tests of the standard model at…
Grid: OneCode and FourAPIs
Peter Boyle, Guido Cossu, Gianluca Filaci +3
We discuss a substantial update to the Grid software library for Lattice QCD, enabling it to port to multiple GPU architectures while retaining CPU vectorisation and SIMD execution…
A new framework to tune an improved relativistic heavy-quark action
Davide Giusti, Christoph Lehner
We introduce a new non-perturbative method to tune the parameters of the Columbia formulation of an anisotropic, clover-improved relativistic heavy-quark (RHQ) action. By making us…
Controlling unwanted exponentials in lattice calculations of radiative leptonic decays
Christopher Kane, Davide Giusti, Christoph Lehner +2
Two important sources of systematic errors in lattice QCD calculations of radiative leptonic decays are unwanted exponentials in the sum over intermediate states and unwanted excit…
Lattice determination of and 2 scattering phase shifts with a physical pion mass
T. Blum, P. A. Boyle, M. Bruno +10
Phase shifts for -wave scattering in both the and channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parity…
Direct CP violation and the rule in decay from the Standard Model
Ryan Abbott, Thomas Blum, Peter A. Boyle +12
We present a lattice QCD calculation of the , decay amplitude and , the measure of direct CP-violation in decay, improving our 2015 ca…
Consistency of hadronic vacuum polarization between lattice QCD and the R-ratio
Christoph Lehner, Aaron S. Meyer
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 an…
The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD
Thomas Blum, Norman Christ, Masashi Hayakawa +4
We report the first result for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment with all errors systematically controlled. Several ensemble…
Exclusive Channel Study of the Muon HVP
Mattia Bruno, Taku Izubuchi, Christoph Lehner +1
The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation…
Hadronic light-by-light contribution to the muon anomalous magnetic moment from lattice QCD
Thomas Blum, Norman Christ, Masashi Hayakawa +4
We report preliminary results for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment. Several ensembles using 2+1 flavors of Möbius domain-wa…
Radiative leptonic decays on the lattice
Christopher Kane, Christoph Lehner, Stefan Meinel +1
Adding a hard photon to the final state of a leptonic pseudoscalar-meson decay lifts the helicity suppression and can provide sensitivity to a larger set of operators in the weak e…
Opportunities for lattice QCD in quark and lepton flavor physics
Christoph Lehner, Stefan Meinel, Tom Blum +8
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. New data generated…
QED corrections to leptonic decay rates
P. A. Boyle, V. Guelpers, A. Juettner +5
RBC/UKQCD is preparing a calculation of leptonic decay rates including isospin breaking corrections using a perturbative approach to include NLO contributions from QED effects. We…
Isospin breaking corrections to the HVP at the physical point
Vera Gülpers, Andreas Jüttner, Christoph Lehner +1
A determination of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon from lattice QCD aiming at a precision of requires to include is…
On isospin breaking in decays for from Lattice QCD
Mattia Bruno, Taku Izubuchi, Christoph Lehner +1
Hadronic spectral functions of decays have been used in the past to provide an alternative determination of the LO Hadronic Vacuum Polarization relevant for the (g-2) of the mu…