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Open AccessHadronic vacuum polarization in the muon g − 2: the short-distance contribution from lattice QCD
We present results for the short-distance window observable of the hadronic vacuum polarization contribution to the muon g – 2, computed via the time-momentum representation (TMR) in lattice QCD. A key novelty of...
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Open AccessLow-energy matrix elements of heavy-quark currents
In QCD at energies well below a heavy-quark threshold, the heavy-quark vector current can be represented via local operators made of the lighter quarks and of the gluon fields. We extract the leading perturbat...
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Open AccessHadronic light-by-light scattering contribution to the muon g − 2 from lattice QCD: semi-analytical calculation of the QED kernel
Hadronic light-by-light scattering is one of the virtual processes that causes the gyromagnetic factor g of the muon to deviate from the value of two predicted by Dirac’s theory. This process makes one of the lar...
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Open AccessForward light-by-light scattering and electromagnetic correction to hadronic vacuum polarization
Lattice QCD calculations of the hadronic vacuum polarization (HVP) have reached a precision where the electromagnetic (e.m.) correction can no longer be neglected. This correction is both computationally chall...
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Open AccessThe hadronic running of the electromagnetic coupling and the electroweak mixing angle from lattice QCD
We compute the hadronic running of the electromagnetic and weak couplings in lattice QCD with Nf = 2 + 1 flavors of O ...
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Open AccessThe charm-quark contribution to light-by-light scattering in the muon \((g-2)\) from lattice QCD
We compute the hadronic light-by-light scattering contribution to the muon \(g-2\) g ...
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Open AccessVacuum correlators at short distances from lattice QCD
Non-perturbatively computing the hadronic vacuum polarization at large photon virtualities and making contact with perturbation theory enables a precision determination of the electromagnetic coupling at the Z po...
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Open AccessHadronic light-by-light contribution to \((g-2)_\mu \) from lattice QCD: a complete calculation
We compute the hadronic light-by-light scattering contribution to the muon \(g-2\) g ...
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Open AccessDeep inelastic scattering on the quark-gluon plasma
We provide an interpretation of the structure functions of a thermal medium such as the quark-gluon plasma in terms of the scattering of an incoming electron on the medium via the exchange of a spacelike photo...
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Open AccessHadronic light-by-light contribution to \((g-2)_\mu \) from lattice QCD with SU(3) flavor symmetry
We perform a lattice QCD calculation of the hadronic light-by-light contribution to \((g-2)_\mu \) ...
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Open AccessEuclidean correlators at imaginary spatial momentum and their relation to the thermal photon emission rate
The photon emission rate of a thermally equilibrated system is determined by the imaginary part of the in-medium retarded correlator of the electromagnetic current transverse to the spatial momentum of the pho...
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Open AccessLorentz-covariant coordinate-space representation of the leading hadronic contribution to the anomalous magnetic moment of the muon
We present a Lorentz-covariant, Euclidean coordinate-space expression for the hadronic vacuum polarisation, the Adler function and the leading hadronic contribution to the anomalous magnetic moment of the muon...
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Open AccessOn the strength of the U A (1) anomaly at the chiral phase transition in N f = 2 QCD
We study the thermal transition of QCD with two degenerate light flavours by lattice simulations using O(a)-improved Wilson quarks. Temperature scans are performed at a fixed value of N ...
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Lattice QCD and the two-photon decay of the neutral pion
Two-photon decays probe the structure of mesons and represent an important contribution to hadronic light-by-light scattering. For the neutral pion, the decay amplitude tests the effects of the chiral anomaly;...
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Thermal correlators in the ρ channel of two-flavor QCD
We present a lattice QCD calculation with two dynamical flavors of the isovector vector correlator in the high-temperature phase. We analyze the correlator in terms of the associated spectral function, for whi...
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Implications of Poincaré symmetry for thermal field theories in finite-volume
The analytic continuation to an imaginary velocity i ξ of the canonical partition function of a thermal system expressed in a moving frame has a natural implementation in the Euclidean path-integr...
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Vector correlators in lattice QCD: Methods and applications
We discuss the calculation of the leading hadronic vacuum polarization in lattice QCD. Exploiting the excellent quality of the compiled experimental data for the e + ...
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Thermodynamic potentials from shifted boundary conditions: the scalar-field theory case
In a thermal field theory, the cumulants of the momentum distribution can be extracted from the dependence of the Euclidean path integral on a shift in the fields built into the temporal boundary condition. Wh...
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Transport properties of the quark-gluon plasma
Transport properties of a thermal medium determine how its conserved charge densities (for instance the electric charge, energy or momentum) evolve as a function of time and eventually relax back to their equ...
