Measurement of the cross-section ratio [sigma] ([chi]c2)/[sigma]([chi]c1) for prompt χc production at √s=7 TeV
The prompt production of the charmonium χc1 and χc2 mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of s=7 TeV. The χc mesons are identified through their decays χc→J/ψγ with J/ψ→μ+μ− using 36 pb−1 of data collected by the LHCb detector in...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
3 July 2012
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| In: |
Physics letters
Year: 2012, Jahrgang: 714, Heft: 2, Pages: 215-223 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2012.06.077 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1016/j.physletb.2012.06.077 Verlag, kostenfrei, Volltext: http://www.sciencedirect.com/science/article/pii/S037026931200737X |
| Verfasserangaben: | R. Aaij, S. Bachmann, A. Bien, M. Deissenroth, F. Dordei, F. Eisele, C. Färber, S. Hansmann-Menzemer, K. Holubyev, A. Jaeger, K. Kreplin, G. Krocker, C. Langenbruch, C. Linn, J. Marks, M. Meissner, P. Seyfert, S. Stahl, J. van Tilburg, U. Uwer, S. Wandernoth, D. Wiedner, A. Zhelezov [und weitere] ; the LHCb collaboration |
| Zusammenfassung: | The prompt production of the charmonium χc1 and χc2 mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of s=7 TeV. The χc mesons are identified through their decays χc→J/ψγ with J/ψ→μ+μ− using 36 pb−1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two χc spin states, σ(χc2)/σ(χc1), has been determined as a function of the J/ψ transverse momentum, pTJ/ψ, in the range from 2 to 15 GeV/c. The results are in agreement with the next-to-leading order non-relativistic QCD model at high pTJ/ψ and lie consistently above the pure leading-order colour-singlet prediction. |
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| Beschreibung: | Im Titel sind "sigma" und "chi" als griechische Buchstaben dargestellt Gesehen am 13.07.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2012.06.077 |