On the D*s and charmonia leptonic decaysAmong the different scenarios of New Physics, those with an extended Higgs sector are examined with a lot of attention. Recent experimental observations of several anomalies in flavour physics with…Gabriela Bailas, Benoît Blossier, Jochen Heitger et al.·Nov 15, 2017SaveLearn
Recent progress in applying lattice QCD to kaon physicsStandard lattice calculations in kaon physics are based on the evaluation of matrix elements of local operators between two single-hadron states or a single-hadron state and the vacuum. Recent…Xu Feng·Nov 15, 2017SaveLearn
Ward identities in N=1 supersymmetric SU(3) Yang-Mills theory on the latticeThe introduction of a space-time lattice as a regulator of field theories breaks symmetries associated with continuous space-time, i.e.\ Poincaré invariance and supersymmetry. A non-zero gluino…Sajid Ali, Georg Bergner, Henning Gerber et al.·Nov 15, 2017SaveLearn
Structure of the Nucleon and its ExcitationsThe structure of the ground state nucleon and its finite-volume excitations are examined from three different perspectives. Using new techniques to extract the relativistic components of the nucleon…Waseem Kamleh, Derek Leinweber, Zhan-wei Liu et al.·Nov 15, 2017SaveLearn
3d N=4 Super-Yang-Mills on a LatticeIn this paper we explore a new approach to studying three-dimensional N=4 super-Yang-Mills on a lattice. Our strategy is to complexify the Donaldson-Witten twist of four-dimensional N=2…Joel Giedt, Arthur E. Lipstein·Nov 14, 2017SaveLearn
Hadronic vacuum polarization contribution to the anomalous magnetic moments of leptons from first principlesWe compute the leading, strong-interaction contribution to the anomalous magnetic moment of the electron, muon and tau using lattice quantum chromodynamics (QCD) simulations. Calculations include the…Wuppertal collaboration, Sz. Borsanyi, Z. Fodor et al.·Nov 14, 2017SaveLearn
Spectroscopy of the BSM sextet modelAs part of our ongoing lattice study of SU(3) gauge theory with two flavors of fermions in the two-index symmetric representation (the sextet model), we present the current status of the pseudoscalar…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Nov 14, 2017SaveLearn
Spectroscopy of four-dimensional N=1 supersymmetric SU(3) Yang-Mills theorySupersymmetric gauge theories are an important building block for extensions of the standard model. As a first step towards Super-QCD we investigate the pure gauge sector with gluons and gluinos on…Marc Steinhauser, André Sternbeck, Björn Wellegehausen et al.·Nov 14, 2017SaveLearn
Dyons near the transition temperature in SU(3) lattice gluodynamicsWe study the topological structure of SU(3) lattice gluodynamics by cluster analysis. This methodological study is meant as preparation for full QCD. The topological charge density is becoming…V. G. Bornyakov, E. -M. Ilgenfritz, B. V. Martemyanov·Nov 13, 2017SaveLearn
A new method for the beta function in the chiral symmetry broken phaseWe describe a new method to determine non-perturbatively the beta function of a gauge theory using lattice simulations in the p-regime of the theory. This complements alternative measurements of the…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Nov 13, 2017SaveLearn
Electric Dipole Moment Results from lattice QCDWe utilize the gradient flow to define and calculate electric dipole moments induced by the strong QCD θ-term and the dimension-6 Weinberg operator. The gradient flow is a promising tool to…Jack Dragos, Thomas Luu, Andrea Shindler et al.·Nov 13, 2017SaveLearn
Non-perturbative determination of cV, ZV and ZS/ZP in Nf=3 lattice QCDWe report on non-perturbative computations of the improvement coefficient cV and the renormalization factor ZV of the vector current in three-flavour O(a) improved lattice QCD with Wilson quarks…Jochen Heitger, Fabian Joswig, Anastassios Vladikas et al.·Nov 10, 2017SaveLearn
Temperature-dependence of the QCD topological susceptibilityWe recently obtained an estimate of the axion mass based on the hypothesis that axions make up most of the dark matter in the universe. A key ingredient for this calculation was the…Tamas G. Kovacs·Nov 10, 2017SaveLearn
An update on the BQCD Hybrid Monte Carlo programWe present an update of BQCD, our Hybrid Monte Carlo program for simulating lattice QCD. BQCD is one of the main production codes of the QCDSF collaboration and is used by CSSM and in some Japanese…Taylor Ryan Haar, Yoshifumi Nakamura, Hinnerk Stüben·Nov 10, 2017SaveLearn
Individual eigenvalue distributions of crossover chiral random matrices and low-energy constants of SU(2)×U(1) lattice gauge theoryWe compute individual distributions of low-lying eigenvalues of a chiral random matrix ensemble interpolating symplectic and unitary symmetry classes by the Nyström-type method of evaluating the…Takuya Yamamoto, Shinsuke M. Nishigaki·Nov 9, 2017SaveLearn
The B(s) D(s)lν Decay with Highly Improved Staggered Quarks and NRQCDWe report on progress of a lattice QCD calculation of the B Dlν and Bs Ds lν semileptonic form factors. We use a relativistic staggered action (HISQ) for light and charm quarks, and an…Euan McLean, Christine T. H. Davies, Brian Colquhoun et al.·Nov 9, 2017SaveLearn
More on heavy tetraquarks in lattice QCD at almost physical pion massWe report on our progress in studying exotic, heavy tetraquark states, qq Q Q. Using publicly available dynamical nf =2+1 Wilson-Clover gauge configurations, generated by…Anthony Francis, Renwick J. Hudspith, Randy Lewis et al.·Nov 9, 2017SaveLearn
Chiral phase transition of three flavor QCD with nonzero magnetic field using standard staggered fermionsLattice simulations for (2+1)-flavor QCD with external magnetic field demonstrated that the quark mass is one of the important parameters responsible for the (inverse) magnetic catalysis. We discuss…Akio Tomiya, Heng-Tong Ding, Swagato Mukherjee et al.·Nov 8, 2017SaveLearn
O(a) Improvement of 2D N=(2,2) Lattice SYM TheoryWe perform a tree-level O(a) improvement of two-dimensional N=(2,2) supersymmetric Yang-Mills theory on the lattice, motivated by the fast convergence in numerical simulations. The improvement…Masanori Hanada, Daisuke Kadoh, So Matsuura et al.·Nov 7, 2017SaveLearn
Finite temperature gluon propagator in Landau gauge: non-zero Matsubara frequencies and spectral densitiesWe report on the lattice computation of the Landau gauge gluon propagator at finite temperature, including the non-zero Matsubara frequencies. Moreover, the corresponding Källén-Lehmann spectral…Paulo J. Silva, Orlando Oliveira, David Dudal et al.·Nov 7, 2017SaveLearn
Charmed states and flavour symmetry breakingExtending the SU(3) flavour symmetry breaking expansion from up, down and strange sea quark masses to partially quenched valence quark masses allows an extrapolation to the charm quark mass. This…R. Horsley, Z. Koumi, Y. Nakamura et al.·Nov 7, 2017SaveLearn
Exploratory studies for the position-space approach to hadronic light-by-light scattering in the muon g-2The well-known discrepancy in the muon g-2 between experiment and theory demands further theory investigations in view of the upcoming new experiments. One of the leading uncertainties lies in the…Nils Asmussen, Antoine Gérardin, Harvey B. Meyer et al.·Nov 7, 2017SaveLearn
Baryonic and mesonic 3-point functions with open spin indicesWe have implemented a new way of computing three-point correlation functions. It is based on a factorization of the entire correlation function into two parts which are evaluated with open spin- (and…Gunnar S. Bali, Sara Collins, Benjamin Glässle et al.·Nov 7, 2017SaveLearn
New techniques and results for worldline simulations of lattice field theoriesWe use the complex ϕ4 field at finite density as a model system for developing further techniques based on worldline formulations of lattice field theories. More specifically we: 1) Discuss new…Mario Giuliani, Oliver Orasch, Christof Gattringer·Nov 7, 2017SaveLearn
Dirac spectral density and mass anomalous dimension in 2+1 flavor QCDWe compute the Dirac spectral density of QCD in a wide range of eigenvalues by using a stochastic method. We use 2+1 flavor lattice ensembles generated with Mobius domain-wall fermion at three…Katsumasa Nakayama, Shoji Hashimoto, Hidenori Fukaya·Nov 7, 2017SaveLearn