Zobrazeno 1 - 10
of 217
pro vyhledávání: '"wenger, Urs"'
Autor:
Alexandrou, Constantia, Bacchio, Simone, Constantinou, Martha, Delmar, Joseph, Finkenrath, Jacob, Kostrzewa, Bartosz, Petschlies, Marcus, Chacon, Luis Alberto Rodriguez, Spanoudes, Gregoris, Steffens, Fernanda, Urbach, Carsten, wenger, Urs
We present the full decomposition of the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with $N_f=2+1+1$ Wilson twisted-mass clover-improved fermions at the physical quark masses. Fo
Externí odkaz:
http://arxiv.org/abs/2405.08529
Fixed point lattice actions are designed to have continuum classical properties unaffected by discretization effects and reduced lattice artifacts at the quantum level. They provide a possible way to extract continuum physics with coarser lattices, t
Externí odkaz:
http://arxiv.org/abs/2401.06481
We present an evaluation of the glueball spectrum for configurations produced with $N_f=1$ dynamical fermions as a function of the $m_{\rm PCAC}$ mass. We obtained masses of states that fall into the irreducible representations of the octahedral grou
Externí odkaz:
http://arxiv.org/abs/2312.00470
Lattice gauge-equivariant convolutional neural networks (L-CNNs) can be used to form arbitrarily shaped Wilson loops and can approximate any gauge-covariant or gauge-invariant function on the lattice. Here we use L-CNNs to describe fixed point (FP) a
Externí odkaz:
http://arxiv.org/abs/2311.17816
Autor:
Wenger, Urs
When lattice QCD is formulated in sectors of fixed quark numbers, the canonical fermion determinants can be expressed explicitly in terms of transfer matrices. This in turn provides a complete factorization of the fermion determinants in temporal dir
Externí odkaz:
http://arxiv.org/abs/2302.07385
Autor:
Alexandrou, Constantia, Bacchio, Simone, De Santis, Alessandro, Dimopoulos, Petros, Finkenrath, Jacob, Frezzotti, Roberto, Gagliardi, Giuseppe, Garofalo, Marco, Hadjiyiannakou, Kyriakos, Kostrzewa, Bartosz, Jansen, Karl, Lubicz, Vittorio, Petschlies, Marcus, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario, Urbach, Carsten, Wenger, Urs
The ratio $R(E)$ of the cross-sections for $e^+e^-\to$ hadrons and $e^+e^-\to \mu^+\mu^-$ is a valuable energy-dependent probe of the hadronic sector of the Standard Model. Moreover, the experimental measurements of $R(E)$ are the inputs of the dispe
Externí odkaz:
http://arxiv.org/abs/2212.12493
Autor:
Burri, Sebastian, Kanwar, Gurtej, Alexandrou, Constantia, Bacchio, Simone, Bergner, Georg, Finkenrath, Jacob, Gasbarro, Andrew, Hadjiyiannakou, Kyriakos, Jansen, Karl, Kostrzewa, Bartosz, Koutsou, Giannis, Ottnad, Konstantin, Petschlies, Marcus, Pittler, Ferenc, Steffens, Fernanda, Urbach, Carsten, Wenger, Urs
Pseudoscalar-pole diagrams are an important component of estimates of the hadronic light-by-light (HLbL) contribution to the muon $g-2$. We report on our computation of the transition form factors $\mathcal{F}_{P \rightarrow \gamma^* \gamma^*}$ for t
Externí odkaz:
http://arxiv.org/abs/2212.10300
Autor:
Alexandrou, Constantia, Bacchio, Simone, Dimopoulos, Petros, Finkenrath, Jacob, Frezzotti, Roberto, Gagliardi, Giuseppe, Garofalo, Marco, Hadjiyiannakou, Kyriakos, Kostrzewa, Bartosz, Jansen, Karl, Lubicz, Vittorio, Petschlies, Marcus, Sanfilippo, Francesco, Simula, Silvano, Urbach, Carsten, Wenger, Urs
We present new lattice results of the ETM Collaboration, obtained from extensive simulations of lattice QCD with dynamical up, down, strange and charm quarks at physical mass values, different volumes and lattice spacings, concerning the SM predictio
Externí odkaz:
http://arxiv.org/abs/2212.10490
Autor:
Alexandrou, Constantia, Bacchio, Simone, De Santis, Alessandro, Dimopoulos, Petros, Finkenrath, Jacob, Frezzotti, Roberto, Gagliardi, Giuseppe, Garofalo, Marco, Hadjiyiannakou, Kyriakos, Kostrzewa, Bartosz, Jansen, Karl, Lubicz, Vittorio, Petschlies, Marcus, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario, Urbach, Carsten, Wenger, Urs
We present a first-principles lattice QCD investigation of the $R$-ratio between the $e^+e^-$ cross-section into hadrons and that into muons. By using the method of Ref.[1], that allows to extract smeared spectral densities from Euclidean correlators
Externí odkaz:
http://arxiv.org/abs/2212.08467
Autor:
Alexandrou, Constantia, Bacchio, Simone, Dimopoulos, Petros, Finkenrath, Jacob, Frezzotti, Roberto, Gagliardi, Giuseppe, Garofalo, Marco, Hadjiyiannakou, Kyriakos, Kostrzewa, Bartosz, Jansen, Karl, Lubicz, Vittorio, Petschlies, Marcus, Sanfilippo, Francesco, Simula, Silvano, Urbach, Carsten, Wenger, Urs
We present a lattice determination of the disconnected contributions to the leading-order hadronic vacuum polarization (HVP) to the muon anomalous magnetic moment in the so-called short and intermediate time-distance windows. We employ gauge ensemble
Externí odkaz:
http://arxiv.org/abs/2212.07057