Measurement of quarkonium production at forward rapidity in pp√s=7 TeV

The ALICE collaboration

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The inclusive production cross sections at forward rapidity of J/ψ, ψ(2S), Υ (1S) and Υ (2S) are measured in pp collisions at s √ =7 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.35 pb -1 . Quarkonia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the μ+ μ- invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum p T and rapidity y, over the ranges 0<p T <20 GeV/c for J/ψ, 0<p T <12 GeV/c for all other resonances and for \(2.5) . The measured cross sections integrated over p T and y, and assuming unpolarized quarkonia, are: σ J/ψ =6.69±0.04±0.63 μ b, σ ψ(2S) =1.13±0.07±0.19 μ b, σ Υ(1S) =54.2±5.0±6.7 nb and σ Υ(2S) =18.4±3.7±2.9 nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.

Original languageEnglish
Article number2974
Pages (from-to)1-21
Number of pages21
JournalEuropean Physical Journal C
Volume74
Issue number8
DOIs
Publication statusPublished - 2014 Aug 1

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cross sections
Luminance
Momentum
Detectors
mass distribution
transverse momentum
luminosity
collisions
Experiments
detectors
decay
Uncertainty

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

The ALICE collaboration. / Measurement of quarkonium production at forward rapidity in pp√s=7 TeV. In: European Physical Journal C. 2014 ; Vol. 74, No. 8. pp. 1-21.
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Measurement of quarkonium production at forward rapidity in pp√s=7 TeV. / The ALICE collaboration.

In: European Physical Journal C, Vol. 74, No. 8, 2974, 01.08.2014, p. 1-21.

Research output: Contribution to journalArticle

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AU - Alessandro, B.

AU - Alexandre, D.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

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AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - Andrei, C.

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AU - Anguelov, V.

AU - Anielski, J.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arbor, N.

AU - Arcelli, S.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

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AU - Azmi, M. D.

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AU - Kwon, Youngil

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