Tetraquark interpolating fields in a lattice QCD investigation of the Ds0(2317) mesonWe investigate the Ds0(2317) meson using lattice QCD and considering correlation functions of several c s two-quark and c s (u u + d d) four-quark interpolating…Constantia Alexandrou, Joshua Berlin, Jacob Finkenrath et al.·Nov 19, 2019SaveLearn
The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCDWe report the first result for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment with all errors systematically controlled. Several ensembles using 2+1 flavors…Thomas Blum, Norman Christ, Masashi Hayakawa et al.·Nov 19, 2019SaveLearn
Light quark masses in Nf = 2+1 lattice QCD with Wilson fermionsWe present a lattice QCD determination of light quark masses with three sea-quark flavours (Nf = 2+1). Bare quark masses are known from PCAC relations in the framework of CLS lattice computations…Mattia Bruno, Isabel Campos, Patrick Fritzsch et al.·Nov 19, 2019SaveLearn
A new dual representation for staggered lattice QCDWe propose a new strategy to evaluate the partition function of lattice QCD with Wilson gauge action coupled to staggered fermions, based on a strong coupling expansion in the inverse bare gauge…Giuseppe Gagliardi, Wolfgang Unger·Nov 19, 2019SaveLearn
Polyakov Loop Susceptibility and Correlators in the Chiral LimitIn quenched QCD the Polyakov loop is an order parameter of the deconfinement transition, but with decreasing quark mass, the peak in the Polyakov loop susceptibility becomes less pronounced, and it…David A. Clarke, Olaf Kaczmarek, Frithjof Karsch et al.·Nov 18, 2019SaveLearn
Casimir effect with machine learningVacuum fluctuations of quantum fields between physical objects depend on the shapes, positions, and internal composition of the latter. For objects of arbitrary shapes, even made from idealized…M. N. Chernodub, Harold Erbin, I. V. Grishmanovskii et al.·Nov 18, 2019SaveLearn
Lattice study on the twisted CPN-1 models on R× S1We report the results of the lattice simulation of the C PN-1 sigma model on Ss1(large) × Sτ1(small). We take a sufficiently large ratio of the circumferences to…Tatsuhiro Misumi, Toshiaki Fujimori, Etsuko Itou et al.·Nov 18, 2019SaveLearn
Towards the understanding of Zc(3900) from lattice QCDWithin the framework of three-channel Ross-Shaw effective range theory, we derive the constraints among different parameters of the theory in the case of a narrow resonance close to the threshold of…Chuan Liu, Liuming Liu, Ke-Long Zhang·Nov 16, 2019SaveLearn
Tensor renormalization group study of two-dimensional U(1) lattice gauge theory with a θ termWe make an analysis of the two-dimensional U(1) lattice gauge theory with a θ term by using the tensor renormalization group. Our numerical result for the free energy shows good consistency with…Yoshinobu Kuramashi, Yusuke Yoshimura·Nov 15, 2019SaveLearn
Partial Wave Mixing in Hamiltonian Effective Field TheoryWe explore partial-wave mixing in the finite volume based on HEFT, and provide the P-Matrix to show the degree of partial-wave mixing. An example of isospin-2 ππ scattering is used to check the…Yan Li, Jia-jun Wu, Curtis D. Abell et al.·Nov 15, 2019SaveLearn
Partial Wave Mixing in Hamiltonian Effective Field TheoryWithin general partial-wave mixing, a method for reducing the high dimension of the finite-volume Hamiltonian from Hamiltonian effective field theory is proposed. This method provides a new viewpoint…Yan Li, Jia-jun Wu, Curtis D. Abell et al.·Nov 15, 2019SaveLearn
New DoS approaches to finite density lattice QCDWe present two new suggestions for density of states (DoS) approaches to finite density lattice QCD. Both proposals are based on the recently developed and successfully tested DoS FFA technique,…Christof Gattringer, Michael Mandl, Pascal Törek·Nov 13, 2019SaveLearn
Developments in the position-space approach to the HLbL contribution to the muon g-2 on the latticeThe measurement of the anomalous magnetic moment of the muon and its prediction allow for a high-precision test of the Standard Model (SM). In this proceedings article we present ongoing work…Nils Asmussen, En-Hung Chao, Antoine Gérardin et al.·Nov 13, 2019SaveLearn
Two-current correlations and DPDs for the nucleon on the latticeWe calculate correlation functions of two local operators within the nucleon carrying momentum. We resolve their dependence on the spatial distance of the currents. This is carried out for all Wick…Christian Zimmermann·Nov 12, 2019SaveLearn
The leading hadronic vacuum polarization contribution to the muon anomalous magnetic moment using Nf=2+1 O(a) improved Wilson quarksWe 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 Nf = 2+1 dynamical…Antoine Gérardin, Marco Cè, Georg von Hippel et al.·Nov 12, 2019SaveLearn
Master-field simulations of O(a)-improved lattice QCD: Algorithms, stability and exactnessIn master-field simulations of lattice QCD, the expectation values of interest are obtained from a single or at most a few representative gauge-field configurations on very large lattices. If the…Anthony Francis, Patrick Fritzsch, Martin Lüscher et al.·Nov 11, 2019SaveLearn
Leading isospin breaking effects in the hadronic vacuum polarisation with open boundariesWe discuss leading isospin breaking effects in the hadronic vacuum polarisation required for the investigation of the hadronic contribution to (g-2)μ. The calculation proceeds by expanding the…Andreas Risch, Hartmut Wittig·Nov 11, 2019SaveLearn
Lattice QCD calculation of the pion charge radius using a model-independent methodWe use a method to calculate the hadron's charge radius without model-dependent momentum extrapolations. The method does not require the additional quark propagator inversions on the twisted…Xu Feng, Yang Fu, Lu-Chang Jin·Nov 11, 2019SaveLearn
Update on the improved lattice calculation of direct CP-violation in K decaysWe discuss the status of the RBC & UKQCD collaboration's lattice determination of ε', the measure of direct CP-violation in kaon decays, focusing in particular on recent developments in…Christopher Kelly, Tianle Wang·Nov 11, 2019SaveLearn
Bc Bs(d) form factorsWe present results of the first lattice QCD calculations of Bc Bs and Bc Bd weak matrix elements. Results are derived from correlation functions computed on MILC Collaboration gauge…Laurence Cooper, Matthew Wingate, Christine Davies et al.·Nov 11, 2019SaveLearn
Long-range electroweak amplitudes of single hadrons from Euclidean finite-volume correlation functionsA relation is presented between single-hadron long-range matrix elements defined in a finite Euclidean spacetime, and the corresponding infinite-volume Minkowski amplitudes. This relation is valid in…Raúl A. Briceño, Zohreh Davoudi, Maxwell T. Hansen et al.·Nov 11, 2019SaveLearn
Heavy baryon spectrum on lattice with NRQCD bottom and HISQ lighter quarksWe determine the mass spectra of heavy baryons containing one or more bottom quarks along with their hyperfine splittings and various mass differences on MILC 2+1 Asqtad lattices at three different…Protick Mohanta, Subhasish Basak·Nov 9, 2019SaveLearn
Nucleon mass and isovector couplings in 2+1-flavor dynamical domain-wall lattice QCD near physical massWe report nucleon mass, isovector vector and axial-vector charges, and tensor and scalar couplings, calculated using two recent 2+1-flavor dynamical domain-wall fermions lattice-QCD ensembles…Michael Abramczyk, Thomas Blum, Taku Izubuchi et al.·Nov 8, 2019SaveLearn
Large-N expansion and θ-dependence of 2d CPN-1 models beyond the leading orderWe investigate the θ-dependence of 2-dimensional CPN-1 models in the large-N limit by lattice simulations. Thanks to a recent algorithm proposed by M. Hasenbusch to improve the critical…Mario Berni, Claudio Bonanno, Massimo D'Elia·Nov 8, 2019SaveLearn
Static force from the latticeWe present a novel approach to compute the force between a static quark and a static antiquark from lattice gauge theory directly, rather than extracting it from the static energy. We explore this…Nora Brambilla, Viljami Leino, Owe Philipsen et al.·Nov 8, 2019SaveLearn