The degeneration of critical point in Z(3)spin system. A proposal for QCD confinement-deconfinement phase transition in the color spaceThe problem of the phase transition of a Z(3) spin system is a complex issue. A numerical simulation in the framework of the mean field theory using the Metropolis algorithm reveals: (a) the…Yiannis Contoyiannis, Myron Kampitakis·Apr 18, 2019SaveLearn
Multigrid for Wilson Clover Fermions in GridWith the ever-growing number of computing architectures, performance portability is an important aspect of (Lattice QCD) software. The Grid library provides a good framework for writing such code, as…Daniel Richtmann, Peter A. Boyle, Tilo Wettig·Apr 18, 2019SaveLearn
Lattice QCD investigation of a doubly-bottom b b u d tetraquark with quantum numbers I(JP) = 0(1+)We use lattice QCD to investigate the spectrum of the b b u d four-quark system with quantum numbers I(JP) = 0(1+). We use five different gauge-link ensembles with 2+1 flavors of…Luka Leskovec, Stefan Meinel, Martin Pflaumer et al.·Apr 8, 2019SaveLearn
A Lattice Story of Proton SpinIn this contribution, I summarized the recent Lattice QCD consensuses on the quark helicity, plus the investigations on the gluon helicity and orbital angular momenta. The preliminary…Yi-Bo Yang·Apr 8, 2019SaveLearn
Induced QCD II: Numerical resultsWe numerically explore an alternative discretization of continuum SU(Nc) Yang-Mills theory on a Euclidean spacetime lattice, originally introduced by Budzcies and Zirnbauer for gauge group…Bastian B. Brandt, Robert Lohmayer, Tilo Wettig·Apr 8, 2019SaveLearn
The b1 resonance in coupled πω, πϕ scattering from lattice QCDWe present the first lattice QCD calculation of coupled πω and πϕ scattering, incorporating coupled S and D-wave πω in JP=1+. Finite-volume spectra in three volumes are determined via a…Antoni J. Woss, Christopher E. Thomas, Jozef J. Dudek et al.·Apr 8, 2019SaveLearn
Lattice QCD on upcoming Arm architecturesRecently Arm introduced a new instruction set called Scalable Vector Extension (SVE), which supports vector lengths up to 2048 bits. While SVE hardware will not be generally available until about…Nils Meyer, Dirk Pleiter, Stefan Solbrig et al.·Apr 8, 2019SaveLearn
The quark-mass dependence of elastic πK scattering from QCDWe present a determination of the isospin-1/2 elastic πK scattering amplitudes in S and P partial waves using lattice Quantum Chromodynamics. The amplitudes, constrained for a large number of…David J. Wilson, Raul A. Briceno, Jozef J. Dudek et al.·Apr 5, 2019SaveLearn
The leading hadronic contribution to (g-2)μ from lattice QCD with N f=2+1 flavours of O(a) improved Wilson quarksThe comparison of the theoretical and experimental determinations of the anomalous magnetic moment of the muon (g-2)μ constitutes one of the strongest tests of the Standard Model at low energies.…Antoine Gérardin, Marco Cè, Georg von Hippel et al.·Apr 5, 2019SaveLearn
Isospin splittings in the decuplet baryon spectrum from dynamical QCD+QEDWe report a new analysis of the isospin splittings within the decuplet baryon spectrum. Our numerical results are based upon five ensembles of dynamical QCD+QED lattices. The analysis is carried out…R. Horsley, Z. Koumi, Y. Nakamura et al.·Apr 4, 2019SaveLearn
Testing the strength of the UA(1) anomaly at the chiral phase transition in two-flavour QCDWe study the thermal transition of QCD with two degenerate light flavours by lattice simulations using O(a)-improved Wilson quarks. Particular emphasis lies on the pattern of chiral…Bastian B. Brandt, Marco Cè, Anthony Francis et al.·Apr 4, 2019SaveLearn
Lattice QCD form factor for Bs Ds* lν at zero recoil with non-perturbative current renormalisationWe present details of a lattice QCD calculation of the Bs Ds* axial form factor at zero recoil using the Highly Improved Staggered Quark (HISQ) formalism on the second generation MILC gluon…E. McLean, C. T. H. Davies, A. T. Lytle et al.·Apr 3, 2019SaveLearn
Reliable estimation of the radius of convergence in finite density QCDWe study different estimators of the radius of convergence of the Taylor series of the pressure in finite density QCD. We adopt the approach in which the radius of convergence is estimated first in a…Matteo Giordano, Attila Pásztor·Apr 3, 2019SaveLearn
Phase structure of three flavor QCD in external magnetic fields using HISQ fermionsWe study the phase structure of QCD with three degenerate flavors in the external magnetic fields using highly improved staggered quarks (HISQ). The simulations are performed on 163× 6…Akio Tomiya, Heng-Tong Ding, Xiao-Dan Wang et al.·Apr 2, 2019SaveLearn
Towards a precise determination of the equation of state of QCD at high-temperatureWe present preliminary results towards a fully non-perturbative determination of the equation of state of QCD at very high-temperatures, T≈ 3-80\, GeV. The key ingredient is the lattice…Mattia Dalla Brida, Leonardo Giusti, Michele Pepe·Apr 1, 2019SaveLearn
Joint Contour Net Analysis for Feature Detection in Lattice Quantum Chromodynamics DataIn this paper we demonstrate the use of multivariate topological algorithms to analyse and interpret Lattice Quantum Chromodynamics (QCD) data. Lattice QCD is a long established field of theoretical…Dean P. Thomas, Rita Borgo, Robert S. Laramee et al.·Mar 31, 2019SaveLearn
Quark mass dependence of on-shell and half off-shell scattering amplitudes from Bethe-Salpeter wave function inside the interaction rangeWe evaluate scattering amplitudes at on-shell and half off-shell for I=2 S-wave two-pion system using the Bethe-Salpeter wave function inside the interaction range in the quenched QCD. The…Yusuke Namekawa, Takeshi Yamazaki·Mar 31, 2019SaveLearn
Present and future prospects for lattice QCD calculations of matrix elements for nEDMA status report on the calculations of the contribution of four CP violating operators, the Θ-term, the quark EDM, the chromo EDM and the Weinberg operator to the neutron EDM are presented. At this…Rajan Gupta·Mar 31, 2019SaveLearn
Lattice QCD calculations of the quark and gluon contributions to the proton spinA review of the calculations of the proton's spin using lattice QCD is presented. Results for the three contributions, the quark contribution Σq=u,d,s,c (12 Δq), the total…Rajan Gupta·Mar 31, 2019SaveLearn
Anisotropic pressure induced by finite-size effects in SU(3) Yang-Mills theoryWe study the pressure anisotropy in anisotropic finite-size systems in SU(3) Yang-Mills theory at nonzero temperature. Lattice simulations are performed on lattices with anisotropic spatial volumes…Masakiyo Kitazawa, Sylvain Mogliacci, Isobel Kolbé et al.·Mar 30, 2019SaveLearn
Meson-meson scattering lengths at maximum isospin from lattice QCDWe summarize our lattice QCD determinations of the pion-pion, pion-kaon and kaon-kaon s-wave scattering lengths at maximal isospin with a particular focus on the extrapolation to the physical point…Christopher Helmes, Christian Jost, Bastian Knippschild et al.·Mar 30, 2019SaveLearn
Light-cone distribution amplitudes of octet baryons from lattice QCDWe present lattice QCD results for the wave function normalization constants and the first moments of the distribution amplitudes for the lowest-lying baryon octet. The analysis is based on a large…Gunnar S. Bali, Vladimir M. Braun, Simon Bürger et al.·Mar 29, 2019SaveLearn
Strange electromagnetic form factors of the nucleon with Nf = 2 + 1 O(a)-improved Wilson fermionsWe present results for the strange contribution to the electromagnetic form factors of the nucleon computed on the CLS ensembles with Nf=2+1 flavors of O(a)-improved Wilson fermions…Dalibor Djukanovic, Konstantin Ottnad, Jonas Wilhelm et al.·Mar 29, 2019SaveLearn
Scattering amplitudes from finite-volume spectral functionsA novel proposal is outlined to determine scattering amplitudes from finite-volume spectral functions. The method requires extracting smeared spectral functions from finite-volume Euclidean…John Bulava, Maxwell T. Hansen·Mar 28, 2019SaveLearn
Spectral properties of light and charm mesons from Nf=2+1 anisotropic lattice QCDWe compute temporal correlators and spectral functions for light, open charm and charmonium mesons in the pseudoscalar and vector channel for a range of temperatures below and above the deconfinement…Ryan Quinn, Jonas Glesaaen, Alexander Rothkopf et al.·Mar 26, 2019SaveLearn