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pro vyhledávání: '"Nasrallah, N"'
Autor:
Nasrallah, N. F.
The theoretical evaluation of the coupling constants gpiNN , gKNLambda and gKNSigma is undertaken using QCD sum rules. These quantities were previously calculated with exponential (Borel) kernels used to suppress the unknown contributions of the hadr
Externí odkaz:
http://arxiv.org/abs/2109.05550
Autor:
Nasrallah, N. F.
The contribution of the hadronic continuum in the QCD sum rule calculation of the parameters entering in pseudoscalar meson mixing is evaluated by making use of simple integration kernels tailored in order to practically eliminate the contribution of
Externí odkaz:
http://arxiv.org/abs/1908.07455
Akademický článek
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Autor:
Nasrallah, N. F.
A new QCD calculation of the B parameter of $K^{0}-\bar{K^{0}}$ mixing is presented. It makes use of polynomial kernels in dispersion integrals in order to practically eliminate the contributions of the unknown pseudoscalar strange continuum. This ap
Externí odkaz:
http://arxiv.org/abs/1804.06066
Autor:
Kaci, M.M., Nasrallah, N., Djaballah, A.M., Akkari, I., Belabed, C., Soukeur, A., Atmani, F., Trari, M.
Publikováno v:
In Optical Materials April 2022 126
Autor:
Dominguez, C. A., Horch, H., Jäger, B., Nasrallah, N. F., Schilcher, K., Spiesberger, H., Wittig, H.
Publikováno v:
Phys. Rev. D 96, 074016 (2017)
A new QCD sum rule determination of the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, $a_{\mu}^{\rm hvp}$, is proposed. This approach combines data on $e^{+}e^{-}$ annihilation into hadrons, per
Externí odkaz:
http://arxiv.org/abs/1707.07715
Publikováno v:
In Journal of Physics and Chemistry of Solids January 2022 160
Publikováno v:
In Optical Materials December 2021 122 Part B
Autor:
Nasrallah, N. F.
The couplings of the isosinglet axial-vector currents to the Eta and Eta' mesons are evaluated in a stable, model independent way by use of polynomial kernels in dispersion integrals. The corrections to the Gell-Mann-Oakes-Renner relation in the isos
Externí odkaz:
http://arxiv.org/abs/1609.04369
Autor:
Nasrallah, N. F.
Publikováno v:
Phys. Rev. C 93, 035207 (2016)
Classic calculations of the magnetic moments mu_p and mu_n of the nucleons using the traditional exponential kernel show instability with respect to variations of the Borel mass as well as arbitrariness with respect to the choice of the onset of pert
Externí odkaz:
http://arxiv.org/abs/1601.02247