Publications (63)
Improvement in Autocorrelation Times Measured by the Master-Field Technique using Field Transformation HMC in 2+1 Domain Wall Fermion Simulations
Shuhei Yamamoto, Peter Boyle, Taku Izubuchi +3
The Field-Transformation Hybrid Monte-Carlo (FTHMC) algorithm potentially mitigates the issue of critical slowing down by combining the HMC with a field transformation, originally…
Testing algorithms for critical slowing down
Guido Cossu, Peter Boyle, Norman Christ +3
We present the preliminary tests on two modifications of the Hybrid Monte Carlo (HMC) algorithm. Both algorithms are designed to travel much farther in the Hamiltonian phase space…
An exploratory study of heavy domain wall fermions on the lattice
Peter Boyle, Andreas Juttner, Marina Krstic Marinkovic +3
We report on an exploratory study of domain wall fermions (DWF) as a lattice regularisation for heavy quarks. Within the framework of quenched QCD with the tree-level improved Syma…
Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical point
Peter Boyle, Matteo Di Carlo, Felix Erben +10
We report on the physical-point RBC/UKQCD calculation of the leading isospin-breaking corrections to light-meson leptonic decays. This is highly relevant for future precision tests…
Near-Physical Point Lattice Calculation of Isospin-Breaking Corrections to
Andrew Zhen Ning Yong, Peter Boyle, Matteo Di Carlo +9
In recent years, lattice determinations of non-perturbative quantities such as and , which are relevant for and , have reached an impressive precision…
Isospin Breaking Corrections to the HVP with Domain Wall Fermions
Peter Boyle, Vera Gülpers, James Harrison +4
We present results for the QED and strong isospin breaking corrections to the hadronic vacuum polarization using Domain Wall fermions. QED is included in an electro-quenc…
CompF2: Theoretical Calculations and Simulation Topical Group Report
Peter Boyle, Kevin Pedro, Ji Qiang
This report summarizes the work of the Computational Frontier topical group on theoretical calculations and simulation for Snowmass 2021. We discuss the challenges, potential solut…
NPR step-scaling across the charm threshold
Julien Frison, Peter Boyle, Nicolas Garron
Matching Non-Perturbative Renormalisation on the lattice and perturbative renormalisation would benefit from higher matching scales, which are needed for observables entering their…
BSM Kaon Mixing at the Physical Point
Peter Boyle, Nicolas Garron, Julia Kettle +2
We present a progress update on the calculation of beyond the standard model (BSM) kaon mixing matrix elements at the physical point. Simulations are performed using 2+1 flavour do…
BSM Kaon Mixing at the Physical Point
Peter Boyle, Nicolas Garron, Julia Kettle +1
We present new preliminary results for bag parameters and ratios of the BSM kaon mixing operators measured at the physical point. The results are obtained from simulations of domai…
The strange contribution to with physical quark masses using Möbius domain wall fermions
Matt Spraggs, Peter Boyle, Luigi Del Debbio +5
We present preliminary results for the strange leading-order hadronic contribution to the anomalous magnetic moment of the muon using RBC/UKQCD physical point domain wall fermions…
Domain Wall Charm Physics with Physical Pion Masses: Decay constants, bag and parameters
Peter Boyle, Luigi Del Debbio, Ava Khamseh +3
We provide an overview of RBC/UKQCD's charm project on 2+1 flavour physical pion mass ensembles using Möbius Domain Wall Fermions for the light as well as for the charm quark. We…
Charm Physics with Domain Wall Fermions and Physical Pion Masses
Peter Boyle, Luigi Del Debbio, Andreas Jüttner +4
We present RBC/UKQCD's charm project using flavour ensembles with inverse lattice spacings in the range and two physical pion mass ensembles. Do…
Proton decay matrix elements on the lattice at physical pion mass
Jun-Sik Yoo, Yasumichi Aoki, Peter Boyle +3
Proton decay is a major prediction of Grand-Unified Theories (GUT) and its observation would indicate baryon number violation that is required for baryogenesis. Many decades of sea…
Riemannian manifold hybrid Monte Carlo in lattice QCD
Tuan Nguyen, Peter Boyle, Norman Christ +2
Critical slowing down presents a critical obstacle to lattice QCD calculation at the smaller lattice spacings made possible by Exascale computers. Inspired by the concept of Fourie…
An exploratory calculation of decay from Lattice QCD at physical pion mass
Peter Boyle, En-Hung Chao, Norman Christ +3
We compute the complex, long-distance two-photon-exchange amplitude which contributes to the rare decay from lattice QCD. We use a ph…
An exploratory study of heavy-light semileptonic form factors using distillation
Peter Boyle, Felix Erben, Michael Marshall +3
We present our exploratory study with the aim of simulating heavy-light semileptonic form factors as part of the RBC-UKQCD charm (to bottom) physics programme. We are using a disti…
Light and strange vector resonances from lattice QCD at physical quark masses
Peter Boyle, Felix Erben, Vera Gülpers +5
We present the first ab initio calculation at physical quark masses of scattering amplitudes describing the lightest pseudoscalar mesons interacting via the strong force in the vec…
Physical-mass calculation of and resonance parameters via and scattering amplitudes from lattice QCD
Peter Boyle, Felix Erben, Vera Gülpers +5
We present our study of the and resonances from lattice quantum chromodynamics (QCD) employing domain-wall fermions at physical quark masses. We determine the…
renormalisation of four-quark operators
Julien Frison, Peter Boyle, Nicolas Garron
When several four-quark operators are allowed to mix through renormalisation, this can considerably amplify the problems coming from perturbative truncation and discretisation effe…
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…
Semileptonic , and decays with 2+1f domain wall fermions
Peter Boyle, Luigi Del Debbio, Felix Erben +6
We present the status of our project to calculate , and semileptonic form factors using domain wall fermions for both heavy a…
Magritte, a modern software library for 3D radiative transfer: I. Non-LTE atomic and molecular line modelling
Frederik De Ceuster, Ward Homan, Jeremy Yates +3
Radiative transfer is a key component in almost all astrophysical and cosmological simulations. We present Magritte: a modern open-source software library for 3D radiative transfer…
A lattice potential investigation of quark mass and volume dependence of the spectrum
Gunnar S. Bali, Peter Boyle
We investigate bottomonia splittings by solving a Schrodinger-Pauli-type equation with parametrisations of QCD potentials around those that have been determined previously in latti…
Magritte, a modern software library for 3D radiative transfer: II. Adaptive ray-tracing, mesh construction and reduction
Frederik De Ceuster, Jan Bolte, Ward Homan +6
Radiative transfer is a notoriously difficult and computationally demanding problem. Yet, it is an indispensable ingredient in nearly all astrophysical and cosmological simulations…
Lattice Calculation of Short-Range Contributions to Neutrinoless Double-Beta Decay at Physical Pion Mass
Peter Boyle, Felix Erben, Xu Feng +7
Neutrinoless double-beta () decays provide an excellent probe for determining whether neutrinos are Dirac or Majorana fermions. The short-range matrix elements associated…
Beyond the Standard Model Kaon Mixing with Physical Masses
Peter Boyle, Nicolas Garron, Renwick James Hudspith +4
We present results from a calculation of beyond the standard model (BSM) kaon mixing including data physical with light quark masses. We simulate QCD with Iwasaki gauge a…
Lattice studies of Sp(2N) gauge theories using GRID
Niccolò Forzano, Ed Bennett, Peter Boyle +9
Four-dimensional gauge theories based on symplectic Lie groups provide elegant realisations of the microscopic origin of several new physics models. Numerical studies pursued on th…
Electromagnetic Corrections to Meson Masses and the HVP
Peter Boyle, Vera Gülpers, James Harrison +3
We present an exploratory study of the electromagnetic corrections to meson masses and the hadronic vacuum polarization using Domain Wall fermions. These corrections are…
A generalized software framework for consolidation of radiotherapy planning and delivery data from diverse data sources
Yasin Abdulkadir, Justin Hink, Peter Boyle +14
Aggregating large-scale radiotherapy planning and delivery data is crucial for advancing radiation oncology research and improving clinical practice, yet challenges persist due to…
2+1 flavour Domain Wall Fermion simulations by the RBC and UKQCD collaborations
Peter Boyle, RBC, UKQCD Collaborations
We review simulations of dynamical domain wall fermions at a fixed inverse lattice spacing of 1.73GeV and with pion masses as light as 330MeV and spatial dimensions as large as 2.7…
Perturbative Wilson loops with massive sea quarks on the lattice
Gunnar S. Bali, Peter Boyle
We present O(g^4) calculations of both planar and non-planar Wilson loops for various actions in the presence of sea quarks. In particular, the plaquette, the static potential and…
Report of the Snowmass 2021 Topical Group on Lattice Gauge Theory
Zohreh Davoudi, Ethan T. Neil, Christian W. Bauer +35
Lattice gauge theory continues to be a powerful theoretical and computational approach to simulating strongly interacting quantum field theories, whose applications permeate almost…
A massive momentum-subtraction scheme
Peter Boyle, Luigi Del Debbio, Ava Khamseh
A new renormalization scheme is defined for fermion bilinears in QCD at non vanishing quark masses. This new scheme, denoted RI/mSMOM, preserves the benefits of the nonexceptional…
Towards scattering with domain-wall fermions at the physical point using distillation
Nelson Pitanga Lachini, Peter Boyle, Felix Erben +2
Resonances play an important role in Standard Model phenomenology. In particular, hadronic resonances feature in and decays, which can be central for New Physics searches.…
Lattice QCD and the Computational Frontier
Peter Boyle, Dennis Bollweg, Richard Brower +15
The search for new physics requires a joint experimental and theoretical effort. Lattice QCD is already an essential tool for obtaining precise model-free theoretical predictions o…
Grid: A next generation data parallel C++ QCD library
Peter Boyle, Azusa Yamaguchi, Guido Cossu +1
In this proceedings we discuss the motivation, implementation details, and performance of a new physics code base called Grid. It is intended to be more performant, more general, b…
The heavy quarkonium spectrum from quenched lattice QCD
Peter Boyle
We present results of simulations of the quenched quarkonium spectrum at two values of the lattice spacing and for quark masses around using the tadpole improved clover actio…
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…
Novel Determination Using Inclusive Strange Decay and Lattice HVPs
Peter Boyle, Renwick James Hudspith, Taku Izubuchi +7
We propose and apply a new approach to determining using dispersion relations with weight functions having poles at Euclidean (space-like) momentum which relate strange…
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).
BSM mixing on JLQCD and RBC/UKQCD DWF ensembles
Peter Boyle, Luigi Del Debbio, Felix Erben +6
We are presenting our ongoing Lattice QCD study on mixing on several RBC/UKQCD and JLQCD ensembles with 2+1 dynamical-flavour domain-wall fermions, including physical…
Lattice Determination of the Hadronic Contribution to the Muon using Dynamical Domain Wall Fermions
Peter Boyle, Luigi Del Debbio, Eoin Kerrane +1
We present a calculation of the leading order hadronic contribution to the anomalous magnetic moment of the muon for a dynamical simulation of 2+1 flavour QCD using domain wall fer…
Lattice Calculation of Light Meson Radiative Leptonic Decays
Peter Boyle, Norman H. Christ, Xu Feng +4
In this work, we perform a lattice QCD calculation of the branching ratios and the form factors of radiative leptonic decays () using d…
Lattice QCD calculation of the pion distribution amplitude with domain wall fermions at physical pion mass
Ethan Baker, Dennis Bollweg, Peter Boyle +6
We present a direct lattice QCD calculation of the -dependence of the pion distribution amplitude (DA), which is performed using the quasi-DA in large momentum effective theory…
Comparison of Domain Wall Fermion Multigrid Methods
Peter Boyle, Azusa Yamaguchi
We present a detailed comparison of several recent and new approaches to multigrid solver algorithms suitable for the solution of 5d chiral fermion actions such as Domain Wall ferm…
scattering as a step towards from Lattice QCD
Felix Erben, Matthew Black, Peter Boyle +7
Rare decays provide some of the most sensitive tests of the Standard Model and require precise and systematically improvable hadronic input from lattice QCD. F…
scattering at physical pion mass using distillation
Nelson Pitanga Lachini, Peter Boyle, Felix Erben +2
Scattering at physical pion mass is still an exploratory field in lattice QCD. This generally involves the extraction of excited states through multi-particle correlators on system…
Hierarchically deflated conjugate residual
Azusa Yamaguchi, Peter Boyle
We present a progress report on a new class of multigrid solver algorithm suitable for the solution of 5d chiral fermions such as Domain Wall fermions and the Continued Fraction ov…
First Lattice QCD Determination of Lepton-Flavor-Universality Ratios in Light-Meson Leptonic Decays
Peter Boyle, Norman H. Christ, Xu Feng +4
The ratio of electronic to muonic leptonic decay widths, , for the light mesons and , provides a clean test of lepton flavor universality (LFU) and a sensitive pr…
Kaon Physics: A Cornerstone for Future Discoveries
Jason Aebischer, Atakan Tugberk Akmete, Riccardo Aliberti +153
The kaon physics programme, long heralded as a cutting-edge frontier by the European Strategy for Particle Physics, continues to stand at the intersection of discovery and innovati…
Accelerating HPC codes on Intel(R) Omni-Path Architecture networks: From particle physics to Machine Learning
Peter Boyle, Michael Chuvelev, Guido Cossu +3
We discuss practical methods to ensure near wirespeed performance from clusters with either one or two Intel(R) Omni-Path host fabric interfaces (HFI) per node, and Intel(R) Xeon P…
The Static Potential to O(α^2) in Lattice Perturbation Theory
Peter Boyle, Gunnar S Bali
We present a calculation of Wilson loops, and the static inter-quark potential to in lattice perturbation theory. This is carried out with the Wilson, Symanzik-Weisz, and…
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…
Retinal vessel segmentation by probing adaptive to lighting variations
Guillaume Noyel, Christine Vartin, Peter Boyle +1
We introduce a novel method to extract the vessels in eye fun-dus images which is adaptive to lighting variations. In the Logarithmic Image Processing framework, a 3-segment probe…
Superimposition of eye fundus images for longitudinal analysis from large public health databases
Guillaume Noyel, Rebecca Thomas, Gavin Bhakta +3
In this paper, a method is presented for superimposition (i.e. registration) of eye fundus images from persons with diabetes screened over many years for diabetic retinopathy. The…
A massive momentum-subtraction scheme
Peter Boyle, Luigi Del Debbio, Ava Khamseh
We introduce a new massive renormalization scheme, denoted mSMOM, as a modification of the existing RI/SMOM scheme. We use SMOM for defining renormalized fermion bilinears in QCD a…
Non-perturbative renormalization of kaon four-quark operators with nf=2+1 Domain Wall fermions
Peter Boyle, Nicolas Garron
We present our strategy and some preliminary results for the renormalization of four-quark operators relevant for kaon physics. We follow the non-perturbative Rome-Southampton meth…
Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses
Peter Boyle, Matteo Di Carlo, Felix Erben +10
The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller…
Clover Action for Blue Gene-Q and Iterative solvers for DWF
Karthee Sivalingam, Peter Boyle
In Lattice QCD, a major challenge in simulating physical quarks is the computational complexity of these simulations. In this proceeding, we describe the optimisation of Clover fer…
Towards the physical point hadronic vacuum polarisation from Moebius DWF
Marina Marinkovic, Peter Boyle, Luigi Del Debbio +3
We present steps towards the computation of the leading-order hadronic contribution to the muon anomalous magnetic moment on RBC/UKQCD physical point DWF ensembles. We discuss seve…
Charm physics with Moebius Domain Wall Fermions
Andreas Jüttner, Francesco Sanfilippo, Justus Tobias Tsang +5
We present results showing that Domain Wall fermions are a suitable discretisation for the simulation of heavy quarks. This is done by a continuum scaling study of charm quarks in…
The Kaon Bag Parameter at Physical Mass
Julien Frison, Peter Boyle, Norman H. Christ +4
We present preliminary results for the calculation of the Kaon Bag parameter in lattice QCD, using Möbius Domain Wall Fermion ensembles generated by the RBC-UKQCD…