212 citations · 851 across the 30 of their papers we have counts for
25 papers · 1 filter
Toward a resolution of the NN controversy
Amy Nicholson, Evan Berkowitz, John Bulava +13
Lattice QCD calculations of two-nucleon interactions have been underway for about a decade, but still haven't reached the pion mass regime necessary for matching onto effective fie…
Prediction and compression of lattice QCD data using machine learning algorithms on quantum annealer
Boram Yoon, Chia Cheng Chang, Garrett T. Kenyon +2
We present regression and compression algorithms for lattice QCD data utilizing the efficient binary optimization ability of quantum annealers. In the regression algorithm, we enco…
Nucleon Axial Form Factor from Domain Wall on HISQ
Aaron S. Meyer, Evan Berkowitz, Chris Bouchard +10
The Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrino oscillation experiment that is poised to answer key questions about the nature of neutrinos. Lattice QCD has…
Detailed analysis of excited state systematics in a lattice QCD calculation of
Jinchen He, David A. Brantley, Chia Cheng Chang +14
Excited state contamination remains one of the most challenging sources of systematic uncertainty to control in lattice QCD calculations of nucleon matrix elements and form factors…
Scale setting the Möbius Domain Wall Fermion on gradient-flowed HISQ action using the omega baryon mass and the gradient-flow scales and
Nolan Miller, Logan C Carpenter, Evan Berkowitz +14
We report on a sub-percent scale determination using the omega baryon mass and gradient-flow methods. The calculations are performed on 22 ensembles of highly improved,…
Two-nucleon S-wave interactions at the flavor-symmetric point with : a first lattice QCD calculation with the stochastic Laplacian Heaviside method
Ben Hörz, Dean Howarth, Enrico Rinaldi +11
We report on the first application of the stochastic Laplacian Heaviside method for computing multi-particle interactions with lattice QCD to the two-nucleon system. Like the Lapla…
from Möbius domain-wall fermions solved on gradient-flowed HISQ ensembles
Nolan Miller, Henry Monge-Camacho, Chia Cheng Chang +15
We report the results of a lattice quantum chromodynamics calculation of using Möbius domain-wall fermions computed on gradient-flowed highly-improved stagger…
Lattice QCD Determination of
André Walker-Loud, Evan Berkowitz, David A. Brantley +13
The nucleon axial coupling, , is a fundamental property of protons and neutrons, dictating the strength with which the weak axial current of the Standard Model couples to nucl…
The Stochastic Feynman-Hellmann Method
Arjun Singh Gambhir, Evan Berkowitz, David Brantley +7
The Feynman-Hellmann method, as implemented by Bouchard et al. [1612.06963], was recently employed successfully to determine the nucleon axial charge. A limitation of the method wa…
Short Range Operator Contributions to decay from LQCD
Henry Monge-Camacho, Evan Berkowitz, David Brantley +11
The search for neutrinoless double beta decay of nuclei is believed to be one of the most promising means to search for new physics. Observation of this very rare nuclear process,…
Progress in Multibaryon Spectroscopy
Evan Berkowitz, David Brantley, Kenneth McElvain +9
Anchoring the nuclear interaction in QCD is a long-outstanding problem in nuclear physics. While the lattice community has made enormous progress in mesonic physics and single nucl…
Simulating the weak death of the neutron in a femtoscale universe with near-Exascale computing
Evan Berkowitz, M. A. Clark, Arjun Gambhir +9
The fundamental particle theory called Quantum Chromodynamics (QCD) dictates everything about protons and neutrons, from their intrinsic properties to interactions that bind them i…
A percent-level determination of the nucleon axial coupling from Quantum Chromodynamics
Chia Cheng Chang, Amy Nicholson, Enrico Rinaldi +12
The , , is the strength of its coupling to the axial current of the Standard Model of particle physics, in much the sam…
Nucleon axial coupling from Lattice QCD
Chia Cheng Chang, Amy Nicholson, Enrico Rinaldi +12
We present state-of-the-art results from a lattice QCD calculation of the nucleon axial coupling, , using Möbius Domain-Wall fermions solved on the dynamical …
Calm Multi-Baryon Operators
Evan Berkowitz, Amy Nicholson, Chia Cheng Chang +6
Outstanding problems in nuclear physics require input and guidance from lattice QCD calculations of few baryons systems. However, these calculations suffer from an exponentially ba…
An accurate calculation of the nucleon axial charge with lattice QCD
Evan Berkowitz, David Brantley, Chris Bouchard +12
We report on a lattice QCD calculation of the nucleon axial charge, , using Möbius Domain-Wall fermions solved on the dynamical HISQ ensembles after they are smear…
D-Meson Mixing in 2+1-Flavor Lattice QCD
Chia Cheng Chang, C. M. Bouchard, A. X. El-Khadra +7
We present results for neutral D-meson mixing in 2+1-flavor lattice QCD. We compute the matrix elements for all five operators that contribute to D mixing at short distances, inclu…
Möbius domain-wall fermions on gradient-flowed dynamical HISQ ensembles
Evan Berkowitz, Chris Bouchard, Chia Cheng Chang +9
We report on salient features of a mixed lattice QCD action using valence Möbius domain-wall fermions solved on the dynamical HISQ ensembles generated by the MILC Colla…
On the Feynman-Hellmann Theorem in Quantum Field Theory and the Calculation of Matrix Elements
Chris Bouchard, Chia Cheng Chang, Thorsten Kurth +2
The Feynman-Hellmann theorem can be derived from the long Euclidean-time limit of correlation functions determined with functional derivatives of the partition function. Using this…
Matrix elements from moments of correlation functions
Chris Bouchard, Chia Cheng Chang, Kostas Orginos +1
Momentum-space derivatives of matrix elements can be related to their coordinate-space moments through the Fourier transform. We derive these expressions as a function of momentum…
Neutrinoless double beta decay from lattice QCD
Amy Nicholson, Evan Berkowitz, Chia Cheng Chang +7
While the discovery of non-zero neutrino masses is one of the most important accomplishments by physicists in the past century, it is still unknown how and in what form these masse…
-mixing matrix elements from lattice QCD for the Standard Model and beyond
A. Bazavov, C. Bernard, C. M. Bouchard +17
We calculate---for the first time in three-flavor lattice QCD---the hadronic matrix elements of all five local operators that contribute to neutral - and -meson mixing in…
Hadronic matrix elements of neutral-meson mixing through lattice QCD
C. C. Chang
Neutral-meson mixing is loop suppressed in the Standard Model, leading to the possibility of enhanced sensitivity to new physics. The uncertainty in Standard Model predictions for…
Neutral B-meson mixing parameters in and beyond the SM with 2+1 flavor lattice QCD
C. M. Bouchard, E. D. Freeland, C. W. Bernard +6
We report on the status of our calculation of the hadronic matrix elements for neutral -meson mixing with asqtad sea and valence light quarks and using the Wilson clover action…