Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Petschlies, M."'
Autor:
Alexandrou, C., Bacchio, S., Bergner, G., Burri, S., Finkenrath, J., Gasbarro, A., Hadjiyiannakou, K., Jansen, K., Kanwar, G., Kostrzewa, B., Koutsou, G., Ottnad, K., Petschlies, M., Pittler, F., Steffens, F., Urbach, C., Wenger, U.
Publikováno v:
Phys.Rev.D 108 (2023) 9, 094514
The neutral pion generates the leading pole contribution to the hadronic light-by-light tensor, which is given in terms of the nonperturbative transition form factor $\mathcal{F}_{\pi^0\gamma\gamma}(q_1^2,q_2^2)$. Here we present an ab-initio lattice
Externí odkaz:
http://arxiv.org/abs/2308.12458
Autor:
Alexandrou, C., Bacchio, S., Dimopoulos, P., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Hadjiyiannakou, K., Kostrzewa, B., Jansen, K., Lubicz, V., Petschlies, M., Sanfilippo, F., Simula, S., Urbach, C., Wenger, U.
We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{\mu}^{\rm HVP}$, in the so-called short and intermediate time-distance windows, $a_{\mu}^{\rm SD}$ and
Externí odkaz:
http://arxiv.org/abs/2212.09340
Autor:
Alexandrou, C., Bacchio, S., Dimopoulos, P., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Hadjiyiannakou, K., Kostrzewa, B., Jansen, K., Lubicz, V., Petschlies, M., Sanfilippo, F., Simula, S., Urbach, C., Wenger, U.
We present a lattice determination of the leading-order hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment, $a_{\mu}^{\rm HVP}$, in the so-called short and intermediate time-distance windows, $a_{\mu}^{\rm SD}$ and
Externí odkaz:
http://arxiv.org/abs/2206.15084
Autor:
Liu, L., Bacchio, S., Dimopoulos, P., Finkenrath, J., Frezzotti, R., Helmes, C., Jost, C., Knippschild, B., Kostrzewa, B., Liu, H., Ottnad, K., Petschlies, M., Urbach, C., Werner, M.
We present results for the isospin-0 $\pi\pi$ s-wave scattering length calculated in twisted mass lattice QCD. We use three $N_f = 2$ ensembles with unitary pion mass at its physical value, 240~MeV and 330~MeV respectively. We also use a large set of
Externí odkaz:
http://arxiv.org/abs/1701.08961
Autor:
Liu, L., Bacchio, S., Dimopoulos, P., Finkenrath, J., Frezzotti, R., Helmes, C., Jost, C., Knippschild, B., Kostrzewa, B., Liu, H., Ottnad, K., Petschlies, M., Urbach, C., Werner, M.
Publikováno v:
Phys. Rev. D 96, 054516 (2017)
We present results for the isospin-0 $\pi\pi$ s-wave scattering length calculated with Osterwalder-Seiler valence quarks on Wilson twisted mass gauge configurations. We use three $N_f = 2$ ensembles with unitary (valence) pion mass at its physical va
Externí odkaz:
http://arxiv.org/abs/1612.02061
Autor:
Alexandrou, C., Athenodorou, A., Constantinou, M., Hadjiyiannakou, K., Jansen, K., Koutsou, G., Ottnad, K., Petschlies, M.
Publikováno v:
Phys. Rev. D 93, 074503 (2016)
We evaluate the neutron electric dipole moment $\vert \vec{d}_N\vert$ using lattice QCD techniques. The gauge configurations analyzed are produced by the European Twisted Mass Collaboration using $N_f{=}2{+}1{+}1$ twisted mass fermions at one value o
Externí odkaz:
http://arxiv.org/abs/1510.05823
Autor:
ETM Collaboration, Abdel-Rehim, A., Alexandrou, C., Burger, F., Constantinou, M., Dimopoulos, P., Frezzotti, R., Hadjiyiannakou, K., Helmes, C., Jansen, K., Kallidonis, C. Jost. C., Knippschild, B., Kostrzewa, B., Koutsou, G., Liu, L., Mangin-Brinet, M., Ottnad, K., Petschlies, M., Pientka, G., Rossi, G. C., Urbach, C., Wenger, U., Werner, M.
Publikováno v:
Phys. Rev. D 95, 094515 (2017)
We present physics results from simulations of QCD using $N_f = 2$ dynamical Wilson twisted mass fermions at the physical value of the pion mass. These simulations were enabled by the addition of the clover term to the twisted mass quark action. We s
Externí odkaz:
http://arxiv.org/abs/1507.05068
A method suitable for extracting resonance parameters of unstable baryons in lattice QCD is examined. The method is applied to the strong decay of the Delta to a pion-nucleon state, extracting the pi-N - Delta coupling constant and Delta decay width.
Externí odkaz:
http://arxiv.org/abs/1401.3507
A method suitable for extracting resonance parameters of unstable baryons in lattice QCD is examined. The method is applied to the strong decay of the Delta to a pion-nucleon state, extracting the pion-nucleon - Delta coupling constant and Delta deca
Externí odkaz:
http://arxiv.org/abs/1305.6081
We give a short description of the present situation of lattice QCD simulations. We then focus on the computation of the anomalous magnetic moment of the muon using lattice techniques. We demonstrate that by employing improved observables for the muo
Externí odkaz:
http://arxiv.org/abs/1112.4946