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69 - Jia-Jun Wu , R.Molina , E.Oset 2010
The interactions of $bar{D}Sigma_{c}$-$bar DLambda_c$, $bar{D}^{*}Sigma_{c}$-$bar D^*Lambda_c$, and related strangeness channels, are studied within the framework of the coupled channel unitary approach with the local hidden gauge formalism. A series of meson-baryon dynamically generated relatively narrow $N^*$ and $Lambda^*$ resonances are predicted around 4.3 GeV in the hidden charm sector. We make estimates of production cross sections of these predicted resonances in $bar{p} p $ collisions for PANDA at the forthcoming FAIR facility.
57 - Jia-Jun Wu , R.Molina , E.Oset 2010
The interaction between various charmed mesons and charmed baryons are studied within the framework of the coupled channel unitary approach with the local hidden gauge formalism. Several meson-baryon dynamically generated narrow $N^*$ and $Lambda^*$ resonances with hidden charm are predicted with mass above 4 GeV and width smaller than 100 MeV. The predicted new resonances definitely cannot be accommodated by quark models with three constituent quarks and can be looked for at the forthcoming PANDA/FAIR experiments.
75 - B.S.Zou 2010
Evidence has been accumulating for the existence of significant intrinsic non-perturbative five-quark components in various baryons. The inclusion of the five-quark components gives a natural explanation of the excess of $bar d$ over $bar u$, signifi cant quark orbital angular momentum in the proton, the problematic mass and decay pattern of the lowest $1/2^-$ baryon nonet, etc.. A breathing mode of $qqqleftrightarrow qqqqbar q$ is suggested for the lowest $1/2^-$ baryon octet. Evidence of a predicted member of the new scheme, $Sigma^*(1/2^-)$ around 1380 MeV, is introduced.
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