Search for the inclusive production of J/psi in e(+)e(-) collisions using PLUTO data

Details Search for the inclusive production of J/psi in e(+)e(-) collisions using PLUTO data Search for the inclusive production of J/psi in e(+)e(-) collisions using PLUTO data

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sipj.rept.....f&link_type=abstract

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Physics

Annihilation Reactions, Charm (Particle Physics), Electron Scattering, Muons, Particle Collisions, Quarks, Decay, Monte Carlo Method, Pair Production, Quantum Chromodynamics, Scattering Cross Sections

Scientific paper

Inclusive production of J/psi was searched for in e+ e- hadronic events collected by the PLUTO detector at the storage ring PETRA in a range of energies from 30 to 35 GeV. The data were analyzed identifying muons in multihadronic events and looking for the decay mode J/psi yields mu(+)mu(-). With no candidate found, the upper limit obtained for the total cross section is sigma (e+ e- yields J/psi + X) less than or = 12 pb (90 percent C.L.) using an integrated luminosity (integral of dL approx. = 42 p/b) at the average c.m. energy, square root of s = 34.4 GeV. Together with previous results, this rules out a model based on nonperturbative quantum chromodynamic (QCD) production mechanisms.

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