The production of J/ψ mesons in proton–proton collisions at sqrt(s) = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a function of the J/ψ transverse momentum pT and rapidity y in the fiducial region pT ∈ [0; 14] GeV/c and y ∈ [2.0; 4.5]. The differential cross-section and fraction of J/ψ from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb−1 . The measured cross-sections integrated over the fiducial region are 10.52 ± 0.04 ± 1.40+1.64 μb for -2.20 prompt J/ψ production and 1.14 ± 0.01 ± 0.16 μb for J/ψ from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/ψ production cross-section is obtained assuming no J/ψ polarisation andthe third error indicates the acceptance uncertainty due to this assumption.

Measurement of J/ψ production in pp collisions at √S = 7 TeV / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., P., A.C., A. A., A., S., A., Y., A., J., A., J., A., R. B., A., O., A.G., L., A., M., A., E., A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 71:5(2011), pp. 1645-1-1645-17. [10.1140/epjc/s10052-011-1645-y]

Measurement of J/ψ production in pp collisions at √S = 7 TeV

BIZZETI, Andrea;
2011

Abstract

The production of J/ψ mesons in proton–proton collisions at sqrt(s) = 7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a function of the J/ψ transverse momentum pT and rapidity y in the fiducial region pT ∈ [0; 14] GeV/c and y ∈ [2.0; 4.5]. The differential cross-section and fraction of J/ψ from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb−1 . The measured cross-sections integrated over the fiducial region are 10.52 ± 0.04 ± 1.40+1.64 μb for -2.20 prompt J/ψ production and 1.14 ± 0.01 ± 0.16 μb for J/ψ from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/ψ production cross-section is obtained assuming no J/ψ polarisation andthe third error indicates the acceptance uncertainty due to this assumption.
2011
71
5
1645-1
1645-17
Measurement of J/ψ production in pp collisions at √S = 7 TeV / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., P., A.C., A. A., A., S., A., Y., A., J., A., J., A., R. B., A., O., A.G., L., A., M., A., E., A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 71:5(2011), pp. 1645-1-1645-17. [10.1140/epjc/s10052-011-1645-y]
R., Aaij; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; P., Alvarez Cartelle; A. A., Al...espandi
File in questo prodotto:
File Dimensione Formato  
Aaij2011_Article_MeasurementOfJΨProductionInPpC.pdf

Open access

Tipologia: VOR - Versione pubblicata dall'editore
Licenza: [IR] other-oa
Dimensione 1.24 MB
Formato Adobe PDF
1.24 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/706137
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 356
  • ???jsp.display-item.citation.isi??? 321
social impact