$f_0\left(1370\right)$ Controversy from Dispersive Meson-Meson Scattering Data Analyses

Autor: Peláez, J R, Rodas, A, Ruiz de Elvira, J

Publikováno v: Physical Review Letters
Peláez, J R; Rodas, A; Ruiz de Elvira, J (2023). f_{0}(1370) Controversy from Dispersive Meson-Meson Scattering Data Analyses. Physical review letters, 130(5), 051902. American Physical Society 10.1103/PhysRevLett.130.051902

We establish the existence of the long-debated f0(1370) resonance in the dispersive analyses of meson-meson scattering data. For this, we present a novel approach using forward dispersion relations, valid for generic inelastic resonances. We find its

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Precise determination of the [formula omitted] and [formula omitted] parameters in dispersive analysis of the ππ data

Autor: Kamiński, Robert, Garcia-Martin, R., Pelaez, J.R., Ruiz de Elvira, J.

Publikováno v: In Nuclear Physics B (Proceedings Supplements) January 2013 234:253-256

Precise dispersive analysis of the f0(600) and f0(980) resonances from ππ scattering

Autor: Ruiz de Elvira, J., García Martín, R., Kamiński, R., Peláez, J.R.

Publikováno v: In Nuclear Physics B (Proceedings Supplements) 2010 207:173-176

The role of strangeness in chiral and $$U(1)_A$$ $U{\left(1\right)}_A$ restoration

Autor: Gómez Nicola, A., Ruiz de Elvira, J., Vioque-Rodríguez, A., Álvarez-Herrero, D.

Publikováno v: European Physical Journal

We use recently derived Ward identities and lattice data for the light- and strange-quark condensates to reconstruct the scalar and pseudoscalar susceptibilities ( $$\chi _S^\kappa $$ χ S κ , $$\chi _P^K$$ χ P K ) in the isospin 1/2 channel. We sh

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Feynman-Hellmann theorem for resonances and the quest for QCD exotica.

Autor: Ruiz de Elvira, J.¹ elvira@itp.unibe.ch, Meißner, U.-G., Rusetsky, A.², Schierholz, G.³

Publikováno v: European Physical Journal C -- Particles & Fields. Oct2017, Vol. 77 Issue 10, p1-13. 13p.