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17 papers · 1 filter
Di-nucleons do not form bound states at heavy pion mass
John Bulava, M. A. Clark, Arjun S. Gambhir +16
We perform a high-statistics lattice QCD calculation of the low-energy two-nucleon scattering amplitudes. In order to address discrepancies in the literature, the calculation is pe…
Two- and three-meson scattering amplitudes with physical quark masses from lattice QCD
Sebastian M. Dawid, Zachary T. Draper, Andrew D. Hanlon +5
We study systems of two and three mesons composed of pions and kaons at maximal isospin using four CLS ensembles with fm, including one with approximately physica…
Lattice QCD studies of the baryon resonance and the and meson resonances: the role of exotic operators in determining the finite-volume spectrum
John Bulava, Danny Darvish, Andrew D. Hanlon +7
Studies of the baryon resonance and the and meson resonances using lattice QCD for pion masses near 200 MeV are presented. The -wave sca…
Performance Optimization of Baryon-block Construction in the Stochastic LapH Method
Phuong Nguyen, Ben Hörz
Implementations of measurement kernels in high-level Lattice QCD frameworks enable rapid prototyping, but can leave hardware capabilities significantly underutilized. This is an ac…
Elastic nucleon-pion scattering at from lattice QCD
John Bulava, Andrew D. Hanlon, Ben Hörz +6
Elastic nucleon-pion scattering amplitudes are computed using lattice QCD on a single ensemble of gauge field configurations with dynamical quark flavors and $m_π…
The hyperon spectrum from lattice QCD
Nolan Miller, Grant Bradley, M. A. Clark +8
Hyperon decays present a promising alternative for extracting from lattice QCD combined with experimental measurements. Currently is deter…
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…
dibaryon away from the symmetric point
M. Padmanath, John Bulava, Jeremy R. Green +6
We present the current status of our efforts in search of dibaryon on =2+1 CLS ensembles away from the flavor symmetric point. Utilizing the distillation framework…
Progress on Meson-Baryon Scattering
Colin Morningstar, John Bulava, Andrew D. Hanlon +5
Progress in computing various meson-baryon scattering amplitudes is presented on a single ensemble from the Coordinated Lattice Simulations (CLS) consortium with MeV and…
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…
I=3/2 nucleon-pion scattering and the Delta(1232) resonance on 2+1 flavor CLS ensembles using the stochastic LapH method
Christian Walther Andersen, John Bulava, Ben Hörz +1
Calculations of the elastic nucleon-pion scattering phase shifts on two lattice QCD ensembles with and are presented. The en…
The leading hadronic vacuum polarization contribution to the muon anomalous magnetic moment using O() improved Wilson quarks
Antoine Gérardin, Marco Cè, Georg von Hippel +6
We present a lattice calculation of the leading hadronic contribution to the anomalous magnetic moment of the muon. This work is based on a subset of the CLS ensembles with $N_f =…
Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCD
Daniel Darvish, Ruairí Brett, John Bulava +4
Lattice QCD allows us to probe the low-lying hadron spectrum in finite-volume using a basis of single- and multi-hadron interpolating operators. Here we examine the effect of inclu…
Spectroscopy From The Lattice: The Scalar Glueball
Ruairí Brett, John Bulava, Daniel Darvish +4
Lattice calculations allow us to probe the low-lying, non-perturbative spectrum of QCD using first principles numerical methods. Here we present the low-lying spectrum in the scala…
The hadronic vacuum polarization contribution to from flavours of O() improved Wilson quarks
Antoine Gérardin, Tim Harris, Georg von Hippel +5
We report on our ongoing project to determine the leading-order hadronic vacuum polarisation contribution to the muon , using ensembles with flavours of O() impro…
String breaking with 2+1 dynamical fermions using the stochastic LapH method
Vanessa Koch, John Bulava, Ben Hörz +4
The static potential between a static quark and a static antiquark separated by a distance r is defined as the energy of the ground state of the system. As a consequence of…
scattering and excited meson spectroscopy using the stochastic LapH method
Ruairí Brett, John Bulava, Jacob Fallica +3
Elastic , - and -wave scattering amplitudes are simultaneously calculated using a Lüscher style analysis on a single ensemble of dynamical Wilson-clover fermions…