Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Korzec, T."'
Autor:
Bruno, M., Brida, M. Dalla, Fritzsch, P., Korzec, T., Ramos, A., Schaefer, S., Simma, H., Sint, S., Sommer, R.
Publikováno v:
Phys. Rev. Lett. 119, 102001 (2017)
We present a lattice determination of the $\Lambda$ parameter in three-flavor QCD and the strong coupling at the Z pole mass. Computing the nonperturbative running of the coupling in the range from $0.2\,$GeV to $70\,$GeV, and using experimental inpu
Externí odkaz:
http://arxiv.org/abs/1706.03821
Autor:
Bruno, M., Brida, M. Dalla, Fritzsch, P., Korzec, T., Ramos, A., Schaefer, S., Simma, H., Sint, S., Sommer, R.
Publikováno v:
PoS(LATTICE2016)197
We present results by the ALPHA collaboration for the $\Lambda$-parameter in 3-flavour QCD and the strong coupling constant at the electroweak scale, $\alpha_s(m_Z)$, in terms of hadronic quantities computed on the CLS gauge configurations. The first
Externí odkaz:
http://arxiv.org/abs/1701.03075
Publikováno v:
PoS(LATTICE2014)291
We review our new strategy and current status towards a high precision computation of the Lambda parameter from three-flavour simulations in QCD. To reach this goal we combine specific advantages of the Schr\"odinger functional and gradient flow coup
Externí odkaz:
http://arxiv.org/abs/1411.7648
Autor:
Alexandrou, C., Gregory, E. B., Korzec, T., Koutsou, G., Negele, J. W., Sato, T., Tsapalis, A.
We present a lattice QCD calculation of the $\Delta(1232)$ matrix elements of the axial-vector and pseudoscalar currents. The decomposition of these matrix elements into the appropriate Lorentz invariant form factors is carried out and the techniques
Externí odkaz:
http://arxiv.org/abs/1304.4614
Publikováno v:
Phys. Rev. D 89, 034502 (2014)
We investigate the excited states of the nucleon using $N_f=2$ twisted mass gauge configurations with pion masses in the range of about 270 MeV to 450 MeV and one ensemble of $N_f=2$ Clover fermions at almost physical pion mass. We use two different
Externí odkaz:
http://arxiv.org/abs/1302.4410
Perturbative and non-perturbative results are presented on the renormalization constants of the quark field and the vector, axial-vector, pseudoscalar, scalar and tensor currents. The perturbative computation, carried out at one-loop level and up to
Externí odkaz:
http://arxiv.org/abs/1201.5025
Autor:
Alexandrou, C., Brinet, M., Carbonell, J., Constantinou, M., Guichon, P., Harraud, P. A., Jansen, K., Kallidonis, C., Korzec, T., Papinutto, M.
We present results on the electroweak form factors and on the lower moments of parton distributions of the nucleon, within lattice QCD using two dynamical flavors of degenerate twisted mass fermions. Results are obtained on lattices with three differ
Externí odkaz:
http://arxiv.org/abs/1201.0021
Autor:
Alexandrou, C., Gregory, E. B., Korzec, T., Koutsou, G., Negele, J. W., Sato, T., Tsapalis, A.
We present the first calculation on the $\Delta$ axial-vector and pseudoscalar form factors using lattice QCD. Two Goldberger-Treiman relations are derived and examined. A combined chiral fit is performed to the nucleon axial charge, N to $\Delta$ ax
Externí odkaz:
http://arxiv.org/abs/1106.6000
Autor:
Alexandrou, C., Carbonell, J., Constantinou, M., Harraud, P. A., Guichon, P., Jansen, K., Kallidonis, C., Korzec, T., Papinutto, M.
Publikováno v:
Phys.Rev.D83:114513,2011
We present results on the lower moments of the nucleon generalized parton distri butions within lattice QCD using two dynamical flavors of degenerate twisted mass fermions. Our simulations are performed on lattices with three different values of the
Externí odkaz:
http://arxiv.org/abs/1104.1600
Autor:
Alexandrou, C., Brinet, M., Carbonell, J., Constantinou, M., Harraud, P. A., Guichon, P., Jansen, K., Korzec, T., Papinutto, M.
Publikováno v:
Phys.Rev.D83:094502,2011
We present results on the nucleon electromagnetic form factors within lattice QCD using two flavors of degenerate twisted mass fermions. Volume effects are examined using simulations at two volumes of spatial length L=2.1 fm and L=2.8 fm. Cut-off eff
Externí odkaz:
http://arxiv.org/abs/1102.2208