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


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Aad G., Abbott B., Abdallah J., Abdelkhalek S., Abdinov O., Aben R., ...Daha Fazla

JOURNAL OF HIGH ENERGY PHYSICS, sa.9, ss.1-49, 2014 (SCI-Expanded, Scopus) identifier identifier identifier

Özet

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.