Zobrazeno 1 - 10
of 208
pro vyhledávání: '"García-Martín R"'
Autor:
Rodríguez-Martín, M., Fueyo, J.G., Pisonero, J., López-Rebollo, J., Gonzalez-Aguilera, D., García-Martín, R., Madruga, F.
Publikováno v:
In Measurement December 2022 205
We review the use of new and precise dispersive equations, which also implement crossing symmetry, in order to shed further light on the long-standing puzzle in the parameters of the f0(500), as well as the f0(980). This puzzle is finally being settl
Externí odkaz:
http://arxiv.org/abs/1211.2617
Publikováno v:
Phys.Rev.Lett.107:072001,2011
We use our latest dispersive analysis of pion-pion scattering data and the very recent Kl4 experimental results to obtain the mass, width and couplings of the two lightest scalar-isoscalar resonances. These parameters are defined from their associate
Externí odkaz:
http://arxiv.org/abs/1107.1635
Autor:
Garcia-Martin, R., Moussallam, B.
Publikováno v:
Eur.Phys.J.C70:155-175,2010
We reconsider Muskhelishvili-Omn\`es (MO) dispersive representations of photon-photon scattering to two pions, motivated by the very high statistics results recently released by the Belle collaboration for charged as well as neutral pion pairs and al
Externí odkaz:
http://arxiv.org/abs/1006.5373
We report our progress on the data analysis of $\pi\pi$ scattering data in terms of Forward Dispersion Relations (FDR), as well as Roy equations (RE) and their once-subtracted counterpart, GKPY equations. The first part of the analysis consists of in
Externí odkaz:
http://arxiv.org/abs/0906.5467
Once and twice subtracted crossing symmetric dispersion relations applied to $\pi\pi \to \pi\pi$ scattering data are analyzed and compared. Both sets of dispersion relations can be used to test the $\pi\pi$ amplitudes in low partial waves up to about
Externí odkaz:
http://arxiv.org/abs/0905.2139
Publikováno v:
Nucl.Phys.Proc.Suppl.186:318-321,2009
We show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy's equations allow for a precise determination of the sigma meson pole position. We present a comparison and a stu
Externí odkaz:
http://arxiv.org/abs/0811.4510
Publikováno v:
Nucl.Phys.Proc.Suppl.186:312-317,2009
This talk is dedicated to the memory of Paco Yndurain, the original speaker in the conference. After a short account of his scientific career, we briefly review our ongoing collaboration to determine precisely the $\pi\pi$ scattering amplitude includ
Externí odkaz:
http://arxiv.org/abs/0810.2204
We review how the use of recent precise data on kaon decays together with forward dispersion relations (FDR) and Roy's equations allow us to determine the sigma resonance pole position very precisely, by using only experimental input. In addition, we
Externí odkaz:
http://arxiv.org/abs/0810.1134
Publikováno v:
Int.J.Mod.Phys.A24:402-409,2009
We present a set of once subtracted dispersion relations which implement crossing symmetry conditions for the $\pi\pi$ scattering amplitudes below 1 GeV. We compare and discuss the results obtained for the once and twice subtracted dispersion relatio
Externí odkaz:
http://arxiv.org/abs/0809.4766