Search Results - "Nasrallah, N. F."

Couplings of the η and η′ mesons to the nucleon by Nasrallah, N.F.

“…The couplings of the η and η′ mesons to the nucleon are obtained from the UA(1) Goldberger–Treiman relation. The chiral symmetry breaking corrections are very…”
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Glue content and mixing angle of the η − η ′ system: The effect of the isoscalar 0 − continuum by Nasrallah, N. F.

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Eta-Eta' mixing and the derivative of the topological susceptibility at zero momentum transfer by 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…”
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Classic Calculations of Static Properties of the Nucleons reexamined by Nasrallah, N. F

“…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…”
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Goldberger-Treiman discrepancy by Nasrallah, N. F.

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QCD sum rule determination of α( MZ) with minimal data input by Groote, S., Körner, J.G., Schilcher, K., Nasrallah, N.F.

“…We present the results of a new evaluation of the running fine structure constant α at the scale of the Z mass in which the role of the e + e − annihilation…”
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Spin content of the nucleon by Nasrallah, N. F.

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Anomalous magnetic moment of the muon, a hybrid approach by Dominguez, C. A, Horch, H, Jäger, B, Nasrallah, N. F, Schilcher, K, Spiesberger, H, Wittig, H

“…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…”
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Hadronic part of the tau's ( g - 2) from QCD by Hamzeh, F., Nasrallah, N.F.

“…The hadronic part of the tau's ( g - 2), a H ( τ) , is relatively important due to the large mass of the lepton. A purely theoretical calculation of a H ( τ) ,…”
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Hadronic contributions to the running fine structure constant α( mz2) from QCD sum rules by Nasrallah, N.F

“…The value of the QED running coupling constant α( m z 2) is very important for precision tests of the standard model. A purely theoretical calculation of the…”
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Kaon-baryon couplings and the Goldberger-Treiman relation in SU(3) x SU(3) by NASRALLAH, N. F

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Strong couplings from QCD sum rules by Nasrallah, N.F

“…Use of QCD sum rules yields a new compact expression for the ϱ-π-π coupling constant Gϱππ=12πe2m2ϱfπ2 where δ is due to power and continuum corrections…”
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Kaon–baryon couplings and the Goldberger–Treiman relation in SU(3)×SU(3) by Nasrallah, N.F.

“…The coupling constants GKNΛ and GKNΣ are obtained from the Goldberger–Treiman relation in the strange channel with chiral symmetry breaking taken into account…”
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Meson-Baryon Couplings Revisited by Nasrallah, N. F

“…The theoretical evaluation of the coupling constants gpiNN , gKNLambda and gKNSigma is undertaken using QCD sum rules. These quantities were previously…”
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Confronting QCD with the experimental hadronic spectral functions from tau-decay by Dominguez, C. A, Nasrallah, N. F, Schilcher, K

“…Phys.Rev.D80:054014,2009 The (non-strange) vector and axial-vector spectral functions extracted from $\tau $-decay by the ALEPH collaboration are confronted…”
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New sum rule determination of the nucleon mass and strangeness content by Nasrallah, N. F., Schilcher, K.

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Isospin symmetry breaking and the neutron-proton mass difference by Nasrallah, N. F.

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Strange quark condensate from QCD sum rules to five loops by Dominguez, C. A, Nasrallah, N. F, Schilcher, K

“…JHEP 0802:072,2008 It is argued that it is valid to use QCD sum rules to determine the scalar and pseudoscalar two-point functions at zero momentum, which in…”
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Up and down quark masses from Finite Energy QCD sum rules to five loops by Dominguez, C. A, Nasrallah, N. F, Röntsch, R. H, Schilcher, K

“…Phys.Rev.D79:014009,2009 The up and down quark masses are determined from an optimized QCD Finite Energy Sum Rule (FESR) involving the correlator of…”
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Pseudoscalar Meson Mixing, the Contribution of the Hadronic Continuum to Deviation from Factorization by 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…”
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