Measurement of the differential cross-sections of prompt and non-prompt production of J/psi and psi(2S) in pp collisions at root s=7 and 8 TeV with the ATLAS detector

Abstrakt

The production rates of prompt and non-prompt J/psi and psi(2S) mesons in their dimuon decay modes are measured using 2.1 and 11.4 fb(-1) of data collected with the ATLAS experiment at the Large Hadron Collider, in proton-proton collisions at root s = 7 and 8 respectively. Production cross-sections for prompt as well as non-prompt sources, ratios of psi(2S) to J/psi production, and the fractions of non-prompt production for J/psi and psi(2S) are measured as a function of meson transverse momentum and rapidity.

The measurements are compared to theoretical predictions.

Klíčová slova

• p(p)over-bar collisions
• s=1.8 tev
• quarkonium production
• hadronic collisions
• heavy-quarkonium
• j-psi
• polarization
• chi(c)
• gluons
• hadroproduction