Zobrazeno 1 - 10
of 257
pro vyhledávání: '"Doring M"'
Publikováno v:
Phys. Rev. D 100, 034509 (2019)
Pion-pion elastic scattering in the isospin I=2 channel is investigated in two-flavor dynamical lattice QCD. Six ensembles are used with lattices elongated in one of the spatial dimensions at two quark masses corresponding to a pion mass of 315 MeV a
Externí odkaz:
http://arxiv.org/abs/1905.10202
We perform a simultaneous analysis of s- and p-waves of the $S=-1$ meson-baryon scattering amplitude using all low-energy experimental data. For the first time, differential cross section data are included for chiral unitary coupled-channel models. F
Externí odkaz:
http://arxiv.org/abs/1805.04534
Publikováno v:
Eur. Phys. J. A, 53 9 (2017) 177
The particle exchange model of hadron interactions can be used to describe three-body scattering under the isobar assumption. In this study we start from the 3->3 scattering amplitude for spinless particles, which contains an isobar-spectator scatter
Externí odkaz:
http://arxiv.org/abs/1706.06118
Recently, the GWU lattice group has evaluated high-precision phase-shift data for $\pi\pi$ scattering in the $I = 1$, $J = 1$ channel. Unitary Chiral Perturbation Theory describes these data well around the resonance region and for different pion mas
Externí odkaz:
http://arxiv.org/abs/1611.04536
Autor:
Molina, R., Doring, M.
Publikováno v:
Phys. Rev. D 94, 056010 (2016)
The $\Lambda(1405)$ baryon is difficult to detect in experiment, absent in many quark model calculations, and supposedly manifested through a two-pole structure. Its uncommon properties made it subject to numerous experimental and theoretical studies
Externí odkaz:
http://arxiv.org/abs/1512.05831
The flavor-changing neutral current process $b\to s l^+l^-$ is beneficial to testing the standard model and hunting for new physics scenarios. In exclusive decay modes like $B\to K^*(892)l^+l^-$, the S-wave effects may not be negligible and thus have
Externí odkaz:
http://arxiv.org/abs/1307.0947
We develop a scheme for the extraction of the properties of the scalar mesons $f_0(600)$, $f_0(980)$, and $a_0(980)$ from lattice QCD data. This scheme is based on a two-channel chiral unitary approach with fully relativistic propagators in a finite
Externí odkaz:
http://arxiv.org/abs/1108.3923
Publikováno v:
Eur. Phys. J. A45: 319-333,2010
We determine the helicity amplitudes A_1/2 and radiative decay widths in the transition Lambda(1670) to gamma Y (Y=Lambda or Sigma^0). The Lambda(1670) is treated as a dynamically generated resonance in meson-baryon chiral dynamics. We obtain the rad
Externí odkaz:
http://arxiv.org/abs/1002.3688
Autor:
Doring, M., Nakayama, K.
Publikováno v:
Eur.Phys.J.A43:83-105,2010
The nature of some baryonic resonances is still an unresolved issue. The case of the N*(1535) is particularly interesting in this respect due to the nearby etaN threshold and interference with the N*(1650). The N*(1535) has been described as a thresh
Externí odkaz:
http://arxiv.org/abs/0906.2949
The role of the background in the extraction of resonance contributions from meson-baryon scattering
Publikováno v:
Phys.Lett.B681:26-31,2009
The separation of background and resonance contributions in pion-nucleon scattering is an often discussed issue. We investigate to what extent the background can be separated from the pole contribution. For illustration we use results from an analyti
Externí odkaz:
http://arxiv.org/abs/0903.1781