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25 papers · 2 filters
Critical view of the claimed pentaquark
E. Oset, A. Martinez Torres
We use a theoretical model of the reaction adapted to the experiment done at LEPS where a peak was observed and associated to the pentaquark…
Latest results for the antikaon-nucleon optical potential
V. K. Magas, J. Yamagata-Sekihara, S. Hirenzaki +2
The key question of this letter is whether the K-nucleus optical potential is deep, as it is prefered by the phenomenological fits to kaonic atoms data, or shallow, as it comes out…
Dynamically generated and resonances in the hidden charm sector around 4.3 GeV
Jia-Jun Wu, R. Molina, E. Oset +1
The interactions of -, -, and related strangeness channels, are studied within the framework of the coupled channel unitary…
Three body systems with strangeness and exotic systems
E. Oset, A. Martinez Torres, K. P. Khemchandani +1
We report on four 's and three 's, in the 1500 - 1800 MeV region, as two meson - one baryon S-wave resonances found by solving the Faddeev equations in the coupled…
Experimental status of deeply bound kaonic states in nuclei
V. K. Magas, J. Yamagata-Sekihara, S. Hirenzaki +2
We review recent claims of the existence of deeply bound kaonic states in nuclei. Also we study in details the (K-,p) reaction on C12 with 1 GeV/c momentum kaon beam, based on whic…
Nucleon-Nucleon interaction, charge symmetry breaking and renormalization
A. Calle Cordon, M. Pavon Valderrama, E. Ruiz Arriola
We study the interplay between charge symmetry breaking and renormalization in the NN system for s-waves. We find a set of universality relations which disentangle explicitly the k…