Measurement of the production cross-section of $ψ(2S) \\to J/ψ ( \\to μ^+ μ^-) π^+ π^-$ in pp collisions at $ \\sqrts $ = 7 TeV at ATLAS
Journal
JHEP
Journal Volume
09
Pages
079
Date Issued
2014
Author(s)
Abstract
The prompt and non-prompt production cross-sections for ψ (2S) mesons are measured using 2.1 fb−1 of pp collision data at a centre-of-mass energy of 7TeV recorded by the ATLAS experiment at the LHC. The measurement exploits the ψ (2S) → J/ψ (→ μ+μ−)π+π− decay mode, and probes ψ (2S) mesons with transverse momenta in the range 10 ≤ pT < 100 GeV and rapidity |y| < 2.0. The results are compared to other measurements of ψ (2S) production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production.
Type
journal article