We have measured the fraction of J/psi mesons originating from chi(c) meson decays in p (p) over bar collisions at root s = 1.8 TeV. The fraction, for P-T/(J/psi) > 4.0 GeV/c and (eta) over dot(J/psi) < 0.6, not including contributions from b flavored hadrons, is 29.7% +/- 1.7%(stat) +/- 5.7%(syst). We have determined the cross sections for J/psi mesons originating from chi(c) decays and for directly produced J/psi mesons. We have found that direct J/psi production is in excess of the prediction of the color singlet model by the same factor found for direct psi(2S) production.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Production of J/psi mesons from chi(c) meson decays in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 578-583 [10.1103/PhysRevLett.79.578].

Production of J/psi mesons from chi(c) meson decays in p(p)over-bar collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;
1997-01-01

Abstract

We have measured the fraction of J/psi mesons originating from chi(c) meson decays in p (p) over bar collisions at root s = 1.8 TeV. The fraction, for P-T/(J/psi) > 4.0 GeV/c and (eta) over dot(J/psi) < 0.6, not including contributions from b flavored hadrons, is 29.7% +/- 1.7%(stat) +/- 5.7%(syst). We have determined the cross sections for J/psi mesons originating from chi(c) decays and for directly produced J/psi mesons. We have found that direct J/psi production is in excess of the prediction of the color singlet model by the same factor found for direct psi(2S) production.
1997
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Production of J/psi mesons from chi(c) meson decays in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 578-583 [10.1103/PhysRevLett.79.578].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39163
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo