In this talk I report on the recent developments in the subject of dynamically generated resonances. In particular I discuss the gammap rarr K 0Sigma+ and gamman rarr K 0Sigma 0 reactions, with a peculiar behavior around the K* 0Lambda threshold, due to a 1/2 - resonance around 2035 MeV. Similarly, I discuss a BES experiment, J/psi rarr etaK* 0K* 0 decay, which provides evidence for a new h 1 resonance around 1830 MeV that was predicted from the vector-vector interaction. A short discussion is then made about recent advances in the charm and beauty sectors.
OSET, E.
GENG, L. S.
GAMERMANN, D.
VICENTE VACAS, M. J.
STROTTMAN, D.
KHEMCHANDANI, K. P.
MARTINEZ TORRES, A.
OLLER, J. A.
ROCA, L.
NAPSUCIALE, MAURO
In this talk I summarize recent findings around the description of axial vector mesons as dynamically generated states from the interaction of pseudoscalar mesons and vector mesons, dedicating some attention to the two K(1)(1270) states. Then I review the generation of open and hidden charm scalar and axial states, and how some recent experiment supports the existence of the new hidden charm scalar state predicted. I present recent results showing that the low lying 1/2(+) baryon resonances for S=-1 can be obtained as bound states or resonances of two mesons and one baryon in coupled channels. Then show the differences with the S=0 case, where the N*(1710) appears also dynamically generated from the two pion one nucleon system, but the N*(1440) does not appear, indicating a more complex structure of the Roper resonance. Finally I shall show how the state X(2175), recently discovered at BABAR and BES, appears naturally as a resonance of the phi K (K) over bar system.
OSET, E.
RAMOS, A.
GARZON, E. J.
MOLINA, R.
TOLOS, L.
XIAO, C. W.
WU, J. J.
ZOU, B. S.
After some short introductory remarks on particular issues on the vector mesons in nuclei, in this paper, we present a short review of recent developments concerning the interaction of vector mesons with baryons and with nuclei from a modern perspective using the local hidden gauge formalism for the interaction of vector mesons. We present results for the vector-baryon interaction and in particular for the resonances which appear as composite states, dynamically generated from the interaction of vector mesons with baryons, taking also the mixing of these states with pseudoscalars and baryons into account. We then venture into the charm sector, reporting on hidden charm baryon states around 4400 MeV, generated from the interaction of vector mesons and baryons with charm, which have a strong repercussion on the properties of the J/Psi N interaction. We also address the interaction of K* with nuclei and make suggestions to measure the predicted huge width in the medium by means of transparency ratio. The formalism is extended to study the phenomenon of J/psi suppression in nuclei via J/psi photo-production reactions.
OSET, E.
GENG, L. S.
GAMERMANN, D.
VACAS, M. J. VICENTE
STROTTMAN, D.
KHEMCHANDANI, K. P.
TORRES, A. MARTINEZ
OLLER, J. A.
ROCA, L.
In this talk I summarize recent findings made on the description of axial vector mesons as dynamically generated states from the interaction of pseudoscalar mesons and vector mesons, dedicating some attention to the two K(1) (1270) states. Then I review the generation of open and hidden charm scalar and axial states. Finally, I present recent results showing that the low lying 1/2(+) baryon resonances for S = -1 can be obtained as bound states or resonances of two mesons and one baryon in coupled channels dynamics.