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  • art%3A10.1007%2FJHEP09%282014%29079

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Measurement of the production cross-section of ψ(2S) → J/ψ(→μ + μ − )π + π − in pp collisions at s√ = 7 TeV at ATLAS

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Article number79
<mark>Journal publication date</mark>12/09/2014
<mark>Journal</mark>Journal of High Energy Physics
Issue number9
Volume2014
Number of pages49
Pages (from-to)1-49
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The prompt and non-prompt production cross-sections for psi(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 psi(2S) --> J/psi(--> mu(+)mu(-)) pi(+)pi(-) decay mode, and probes psi(2S) mesons with transverse momenta in the range 10 <= p(T) < 100 GeV and rapidity |y| < 2.0. The results are compared to other measurements of psi(2S) production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production.

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JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0