Charged multi-hadron systems in lattice QCD+QEDSystems with the quantum numbers of up to twelve charged and neutral pseudoscalar mesons, as well as one-, two-, and three-nucleon systems, are studied using dynamical lattice quantum chromodynamics…S. R. Beane, W. Detmold, R. Horsley et al.·Mar 26, 2020SaveLearn
Ratios of the hadronic contributions to the lepton g-2 from Lattice QCD+QED simulationsThe ratios among the leading-order (LO) hadronic vacuum polarization (HVP) contributions to the anomalous magnetic moments of electron, muon and tau-lepton, a=e,μ τHVP,LO, are…D. Giusti, S. Simula·Mar 26, 2020SaveLearn
Strong coupling constant and quark masses from lattice QCDWe review lattice determinations of the charm and bottom quark masses and the strong coupling constant obtained by different methods. We explain how effective field theory approaches, such as…Javad Komijani, Peter Petreczky, Johannes Heinrich Weber·Mar 26, 2020SaveLearn
Discrete aspects of continuous symmetries in the tensorial formulation of Abelian gauge theoriesWe show that standard identities and theorems for lattice models with U(1) symmetry get re-expressed discretely in the tensorial formulation of these models. We explain the geometrical analogy…Yannick Meurice·Mar 24, 2020SaveLearn
Generalizing the relativistic quantization condition to include all three-pion isospin channelsWe present a generalization of the relativistic, finite-volume, three-particle quantization condition for non-identical pions in isosymmetric QCD. The resulting formalism allows one to use discrete…Maxwell T. Hansen, Fernando Romero-López, Stephen R. Sharpe·Mar 24, 2020SaveLearn
Dispersion relation and spectral range of Karsten-Wilczek and Borici-Creutz fermionsWe investigate some properties of Karsten-Wilczek and Borici-Creutz fermions, which are the best known varieties in the class of minimally doubled lattice fermion actions. Our focus is on the…Stephan Dürr, Johannes H. Weber·Mar 24, 2020SaveLearn
Lattice QCD and baryon-baryon interactions: HAL QCD methodIn this article, we review the HAL QCD method to investigate baryon-baryon interactions such as nuclear forces in lattice QCD. We first explain our strategy in detail to investigate baryon-baryon…Sinya Aoki, Takumi Doi·Mar 24, 2020SaveLearn
Dissecting the ΔI= 1/2 rule at large NcWe study the scaling of kaon decay amplitudes with the number of colours, Nc, in a theory with four degenerate flavours, Nf=4. In this scenario, two current-current operators, Q, mediate…Andrea Donini, Pilar Hernández, Carlos Pena et al.·Mar 23, 2020SaveLearn
On the axial-vector form factor of the nucleon and chiral symmetryWe consider the chiral Lagrangian with nucleon, isobar, and pion degrees of freedom. The baryon masses and the axial-vector form factor of the nucleon are derived at the one-loop level. We explore…Matthias F. M. Lutz, Ulrich Sauerwein, Rob G. E. Timmermans·Mar 23, 2020SaveLearn
A Lattice Study of the Two-photon Decay Widths for Scalar and Pseudo-scalar CharmoniumIn this exploratory study, two photon decay widths of pseudo-scalar (ηc) and scalar (c0) charmonium are computed using two ensembles of Nf=2 twisted mass lattice QCD gauge…Ying Chen, Ming Gong, Ning Li et al.·Mar 22, 2020SaveLearn
First-principles calculation of electroweak box diagrams from lattice QCDWe present the first realistic lattice QCD calculation of the γW-box diagrams relevant for beta decays. The nonperturbative low-momentum integral of the γW loop is calculated using a lattice QCD…Xu Feng, Mikhail Gorchtein, Lu-Chang Jin et al.·Mar 22, 2020SaveLearn
Semileptonic B D() Decay Form Factors using the Oktay-Kronfeld ActionWe report recent progress in calculating semileptonic form factors for the B D and B D decays using the Oktay-Kronfeld (OK) action for…Tanmoy Bhattacharya, Benjamin J. Choi, Rajan Gupta et al.·Mar 20, 2020SaveLearn
Complete flavor decomposition of the spin and momentum fraction of the proton using lattice QCD simulations at physical pion massWe evaluate the gluon and quark contributions to the spin of the proton using an ensemble of gauge configuration generated at physical pion mass. We compute all valence and sea quark contributions to…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Mar 18, 2020SaveLearn
TKNN formula for general lattice Hamiltonian in odd dimensionsTopological insulators in odd dimensions are characterized by topological numbers. We prove the well-known relation between the topological number given by the Chern character of the Berry curvature…Hidenori Fukaya, Tetsuya Onogi, Satoshi Yamaguchi et al.·Mar 18, 2020SaveLearn
Recent results of nucleon structure & matrix element calculationsA review of recent lattice calculations of nucleon structure and matrix elements of operators in nucleons is presented. It primarily covers developments in the calculation of the matrix elements of…Tanmoy Bhattacharya, Rajan Gupta, Boram Yoon·Mar 18, 2020SaveLearn
QCD phase transition in the chiral limitWe present a lattice QCD based determination of the chiral phase transition temperature in QCD with two massless (up and down) and one strange quark having its physical mass. We propose and calculate…Olaf Kaczmarek, Frithjof Karsch, Anirban Lahiri et al.·Mar 17, 2020SaveLearn
Flux tubes and string breaking in three dimensional SU(2) Yang-Mills theoryWe consider the three dimensional SU(2) Yang-Mills theory with adjoint static color sources, studying by lattice simulations how the shape of the flux tube changes when increasing the distance…Claudio Bonati, Silvia Morlacchi·Mar 16, 2020SaveLearn
Equivariant flow-based sampling for lattice gauge theoryWe define a class of machine-learned flow-based sampling algorithms for lattice gauge theories that are gauge-invariant by construction. We demonstrate the application of this framework to U(1) gauge…Gurtej Kanwar, Michael S. Albergo, Denis Boyda et al.·Mar 13, 2020SaveLearn
Collins-Soper Kernel for TMD Evolution from Lattice QCDThe Collins-Soper kernel relates transverse momentum-dependent parton distribution functions (TMDPDFs) at different energy scales. For small parton transverse momentum qT QCD,…Phiala Shanahan, Michael Wagman, Yong Zhao·Mar 12, 2020SaveLearn
Path integral contour deformations for noisy observablesMonte Carlo studies of many quantum systems face exponentially severe signal-to-noise problems. We show that noise arising from complex phase fluctuations of observables can be reduced without…William Detmold, Gurtej Kanwar, Michael L. Wagman et al.·Mar 12, 2020SaveLearn
Running coupling constant from position-space current-current correlation functions in three-flavor lattice QCDIn this Letter, we provide a determination of the coupling constant in three-flavor quantum chromodynamics (QCD), αMSs(μ), for MS…Salvatore Cali, Krzysztof Cichy, Piotr Korcyl et al.·Mar 12, 2020SaveLearn
The Roper Resonance in a finite volumeWe calculate the energy levels corresponding to the Roper resonance based on a two-flavor chiral effective Lagrangian for pions, nucleons, deltas and the Roper resonance at leading one-loop order. We…Daniel Severt, Ulf-G. Meißner·Mar 12, 2020SaveLearn
Gluonic-Excitation Energies and Abelian Dominance in SU(3) QCDWe present the first study of the Abelian-projected gluonic-excitation energies for the static quark-antiquark (Q Q) system in SU(3) lattice QCD at the quenched level, using a 324…Hiroki Ohata, Hideo Suganuma·Mar 11, 2020SaveLearn
Neutron Electric Dipole Moments with Clover FermionsWe present preliminary results for the contributions to the neutron EDM arising from the QCD θ-term, the Weinberg three-gluon and the quark chromo-EDM operators from our ongoing lattice…Boram Yoon, Tanmoy Bhattacharya, Vincenzo Cirigliano et al.·Mar 11, 2020SaveLearn
The effect of stout smearing on the phase diagram from multiparameter reweigthing in lattice QCDThe phase diagram and the location of the critical endpoint (CEP) of lattice QCD with unimproved staggered fermions on a Nt=4 lattice was determined fifteen years ago with the multiparameter…Matteo Giordano, Kornel Kapas, Sandor D. Katz et al.·Mar 9, 2020SaveLearn