0000000000525904

AUTHOR

Eulogio Oset Baguena

showing 3 related works from this author

Chiral approach to antikaon s- and p-wave interactions in dense nuclear matter

2006

The properties of the antikaons in nuclear matter are investigated from a chiral unitary approach which incorporates the s- and p-waves of the ${\bar K}N$ interaction. To obtain the in-medium meson-baryon amplitudes we include, in a self-consistent way, Pauli blocking effects, meson self-energies corrected by nuclear short-range correlations and baryon binding potentials. We pay special attention to investigating the validity of the on-shell factorization, showing that it cannot be applied in the evaluation of the in-medium corrections to the p-wave amplitudes. In nuclear matter at saturation energy, the $\Lambda$ and $\Sigma$ develop an attractive potential of about -30 MeV, while the $\Si…

Constitució de la matèriaNuclear TheoryNuclear TheoryFOS: Physical sciencesFísicaNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Collisions (Nuclear physics)Col·lisions (Física nuclear)AntikaonsConstitution of matterNuclear ExperimentPropietats de la matèriaProperties of matter
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Neutron and proton spectra from the decay of Lambda hypernuclei

1996

We have determined the spectra of neutrons and protons following the decay of $\Lambda$ hypernuclei through the one- and two-nucleon induced mechanisms. The momentum distributions of the primary nucleons are calculated and a Monte Carlo simulation is used to account for final state interactions. From the spectra we calculate the number of neutrons ($N_n$) and protons ($N_p$) per $\Lambda$ decay and show how the measurement of these quantities, particularly $N_p$, can lead to a determination of $\Gamma_n / \Gamma_p$, the ratio of neutron to proton induced $\Lambda$ decay. We also show that the consideration of the two-nucleon induced channel has a repercussion in the results, widening the ba…

Monte Carlo methodEstructura nuclearNuclear TheoryReaccions nuclearsAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryFísicaNuclear structureNuclear reactionsMètode de MontecarloNuclear Experiment
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An analysis of the Lattice QCD spectra for $D^*_{s0}(2317)$ and $D^*_{s1}(2460)$

2018

In this talk I present the results obtained using effective field theories in a finite volume from a reanalysis of lattice data on the $KD^{(*)}$ systems, where bound states of $KD$ and $KD^*$ are found and associated with the states $D^*_{s0}(2317)$ and $D^*_{s1}(2460)$, respectively. We confirm the presence of such states on the lattice data and determine the weight of the $KD$ channel in the wave function of $D^*_{s0}(2317)$ and that of $KD^*$ in the wave function of $D^*_{s1}(2460)$. Our results indicate a large meson-meson component in both cases.

PhysicsQuantum chromodynamicsParticle physicsLattice field theoryHigh Energy Physics - Lattice (hep-lat)FOS: Physical sciencesLattice QCDSpectral lineHigh Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)Bound stateEffective field theoryWave function
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