0000000000061191
AUTHOR
T. Fernández-caramés
showing 3 related works from this author
Diquark-diquark correlations in theS01ΛΛpotential
2005
We derive a $\ensuremath{\Lambda}\ensuremath{\Lambda}$ potential from a chiral constituent quark model that has been successful in describing one, two, and three nonstrange baryon systems. The resulting interaction at low energy is attractive at all distances due to the $\ensuremath{\sigma}$ exchange term. The attraction allows for a slightly bound state just below the $\ensuremath{\Lambda}\ensuremath{\Lambda}$ threshold. No short-range repulsive core is found. We extract the diquark-diquark contribution that turns out to be the most attractive and probable at small distances. At large distances the asymptotic behavior of the $\ensuremath{\Lambda}\ensuremath{\Lambda}$ interaction provides a…
CHARMONIUM: X(3872) AND BEYOND
2011
We analyze the spectrum of charmonium above the threshold for the production of D mesons. Several recent intriguing experimental data have reopen the interest on charmonium spectroscopy and they deserve an special attention. We focus our study on the X(3872) and the possible existence of charged states contributing to the spectrum of charmonium
Charmonium spectroscopy above thresholds
2009
We present a systematic and self-consistent analysis of four-quark charmonium states and applied it to study compact four-quark systems and meson-meson molecules. Our results are robust and should serve to clarify the situation of charmonium spectroscopy above the threshold production of charmed mesons.