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

G. Aad, B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, O.S. AbouZeid, H. Abramowicz, H. Abreu, R. Abreu, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Lotte Ansgaard Thomsen, Sascha Mehlhase, Almut Maria Pingel, Alejandro Alonso DiazJames William Monk, Gorm Aske Gram Krohn Galster, Lotte Ansgaard Thomsen, Ask Emil Løvschall-Jensen, Lars Egholm Pedersen

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Abstract

The production rates of prompt and non-prompt J/ψ and ψ (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 √ s = 7 and 8 respectively. Production cross-sections for prompt as well as non-prompt sources, ratios of ψ (2S) to J/ψ production, and the fractions of nonprompt production for J/ψ and ψ (2S) are measured as a function of meson transverse momentum and rapidity. The measurements are compared to theoretical predictions.

OriginalsprogEngelsk
Artikelnummer283
TidsskriftThe European Physical Journal C: Particles and Fields
Vol/bind76
Udgave nummer5
ISSN1434-6044
DOI
StatusUdgivet - 20 maj 2016

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