Nuclear Theory·nucl-th

Thursday·July 14, 2016

4 papers—2 primary·2 cross-listed

03
Forward dispersion relations for pion-kaon scattering and the K*0(800) resonance
A. Rodas🇪🇸 · J.R. Peláez (Universidad Complutense de Madrid)🇪🇸
We review our recent analysis of $π K$ scattering data in terms of forward dispersion relations, and also present the parameters of the strange resonances. This work consists of fits to the data that are constrained to satisfy analyticity requirements. The method yields a set of simple and consistent parameterizations that are compatible with forward dispersion relations up to 1.6 GeV while still describing the data. We also obtain the pole parameters of the $K_{0}^{*} (800)$ and the $K^{*} (892)$ resonances.
↳ hep-phnucl-thActa Phys.Polon.Supp.(2016)·0 citations
04
Further Evidence For Zero Crossing On The Three Gluon Vertex
Anthony G. Duarte🇵🇹 · Orlando Oliveira🇵🇹 · Paulo J. Silva🇵🇹
The three gluon one particle irreducible function is investigated using lattice QCD simulations over a large region of momentum in the Landau gauge for four dimensional pure Yang-Mills equations and the SU(3) gauge group. The results favor a zero crossing of the gluon form factor for momenta in the range $220 - 260$ MeV. This zero crossing is required to happen in order to have a properly defined set of Dyson-Schwinger equations. It is also shown that in the high momentum region the lattice results are compatible with the predictions of renormalisation group improved perturbation theory.
↳ hep-lathep-phhep-thnucl-thPRD(2016)·72 citations

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Forward dispersion relations for pion-kaon scattering and the K*0(800) resonance

Further Evidence For Zero Crossing On The Three Gluon Vertex

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