Zobrazeno 1 - 10
of 2 865
pro vyhledávání: '"Frezzotti, A."'
Autor:
Alexandrou, C., Bacchio, S., De Santis, A., Evangelista, A., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Kalntis, N., Kostrzewa, B., Lubicz, V., Pittler, F., Romiti, S., Sanfilippo, F., Simula, S., Tantalo, N., Urbach, C., Wenger, U.
We present a lattice calculation of the Hadronic Vacuum Polarization (HVP) contribution of the strange and charm quarks to the anomalous magnetic moment of the muon in isospin symmetric QCD. We employ the gauge configurations generated by the Extende
Externí odkaz:
http://arxiv.org/abs/2411.08852
Autor:
Alexandrou, C., Bacchio, S., De Santis, A., Evangelista, A., Finkenrath, J., Frezzotti, R., Gagliardi, G., Garofalo, M., Kostrzewa, B., Lubicz, V., Romiti, S., Sanfilippo, F., Simula, S., Tantalo, N., Urbach, C., Wenger, U.
We present a lattice determination of the inclusive decay rate of the process $\tau\mapsto X_{us} \nu_\tau$ in which the $\tau$ lepton decays into a generic hadronic state $X_{us}$ with $\bar u s$ flavour quantum numbers. Our results have been obtain
Externí odkaz:
http://arxiv.org/abs/2403.05404
Autor:
Frezzotti, R., Gagliardi, G., Lubicz, V., Martinelli, G., Sachrajda, C. T., Sanfilippo, F., Simula, S., Tantalo, N.
We determine, by means of lattice QCD calculations, the local form factors describing the $B_{s}\to \mu^{+}\mu^{-}\gamma$ decay. For this analysis we make use of the gauge configurations produced by the ETM Collaboration with $N_{f}=2+1+1$ flavour of
Externí odkaz:
http://arxiv.org/abs/2402.03262
Autor:
Alexandrou, Constantia, Bacchio, Simone, Constantinou, Martha, Finkenrath, Jacob, Frezzotti, Roberto, Kostrzewa, Bartosz, Koutsou, Giannis, Spanoudes, Gregoris, Urbach, Carsten
We compute the nucleon axial and pseudoscalar form factors using three $N_f=$2+1+1 twisted mass fermion ensembles with all quark masses tuned to approximately their physical values. The values of the lattice spacings of these three physical point ens
Externí odkaz:
http://arxiv.org/abs/2309.05774
Autor:
Evangelista, Antonio, Frezzotti, Roberto, Gagliardi, Giuseppe, Lubicz, Vittorio, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario
Inclusive hadronic decays of the $\tau$ lepton are very interesting from the phenomenological point of view since they give access to the CKM matrix elements $V_{ud}$ and $V_{us}$. In this paper, for the first time, by employing the HLT method for ha
Externí odkaz:
http://arxiv.org/abs/2308.03125
We present a novel method to determine on the lattice both the real and imaginary parts of complex electroweak amplitudes involving two external currents and a single hadron or the QCD vacuum in the external states. The method is based on the spectra
Externí odkaz:
http://arxiv.org/abs/2306.07228
Autor:
Frezzotti, R., Gagliardi, G., Lubicz, V., Martinelli, G., Mazzetti, F., Sachrajda, C. T., Sanfilippo, F., Simula, S., Tantalo, N.
We compute the structure-dependent axial and vector form factors for the radiative leptonic decays $D_s\to \ell\nu_\ell\gamma$, where $\ell$ is a charged lepton, as functions of the energy of the photon in the rest frame of the $D_s$ meson. The compu
Externí odkaz:
http://arxiv.org/abs/2306.05904
Autor:
Evangelista, Antonio, Frezzotti, Roberto, Gagliardi, Giuseppe, Lubicz, Vittorio, Sanfilippo, Francesco, Simula, Silvano, Tantalo, Nazario
The inclusive hadronic decay-rates of the $\tau$ lepton are particularly interesting from the phenomenological point of view since they give access to the CKM matrix elements $V_{ud}$ and $V_{us}$. In this talk, we discuss how a recent method for the
Externí odkaz:
http://arxiv.org/abs/2301.00796
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:
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