We have measured the non resonant production cross section for the processes p pbar >> J/psi pizero and p pbar >> e+ e- at center of mass energies around 3.5 GeV. We found evidence for a resonance af mass 3525.2 and width <1.1 MeV that we identify with the state hc (1P1) of charmonium
J/psi pi0 and e+ e- exclusive production in proton-antiproton annihilation
BETTONI, Diego;CALABRESE, Roberto;DALPIAZ, Pietro;FERRETTI, Paola;GIANOLI, Alberto;LUPPI, Eleonora;PETRUCCI, Ferruccio Carlo;SAVRIE', Mauro;
1993
Abstract
We have measured the non resonant production cross section for the processes p pbar >> J/psi pizero and p pbar >> e+ e- at center of mass energies around 3.5 GeV. We found evidence for a resonance af mass 3525.2 and width <1.1 MeV that we identify with the state hc (1P1) of charmoniumFile in questo prodotto:
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