Measurement of V 0 production ratios in pp collisions at √s=0.9 and 7 TeV
The Λ¯/Λ and Λ¯/K0S production ratios are measured by the LHCb detector from 0.3 nb−1 of pp collisions delivered by the LHC at s√=0.9 TeV and 1.8 nb−1 at s√=7 TeV. Both ratios are presented as a function of transverse momentum, p T, and rapidity, y, in the ranges 0.15 < p T < 2.50 GeV/c and 2....
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
08 August 2011
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| In: |
Journal of high energy physics
Year: 2011, Heft: 8, Pages: 1-22 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP08(2011)034 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP08(2011)034
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| Verfasserangaben: | the LHCb collaboration* |
MARC
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| 246 | 3 | 3 | |a Measurement of V 0 production ratios in proton-proton collisions at square root s = 0.9 and 7 TeV |
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| 500 | |a *The LHCb collaboration: R. Aaij, S. Bachmann, A. Bien, M. Deissenroth, F. Eisele, C. Färber, S. Hansmann-Menzemer, K. Holubyev, A. Jaeger, K. Kreplin, G. Krocker, C. Linn, J. Marks, M. Meissner, P. Seyfert, S. Stahl, U. Uwer, S. Wandernoth, D. Wiedner, A. Zhelezov [und sehr viele weitere Personen] | ||
| 500 | |a Gesehen am 16.02.2022 | ||
| 520 | |a The Λ¯/Λ and Λ¯/K0S production ratios are measured by the LHCb detector from 0.3 nb−1 of pp collisions delivered by the LHC at s√=0.9 TeV and 1.8 nb−1 at s√=7 TeV. Both ratios are presented as a function of transverse momentum, p T, and rapidity, y, in the ranges 0.15 < p T < 2.50 GeV/c and 2.0 < y < 4.5. Results at the two energies are in good agreement as a function of rapidity loss, ∆y = y beam − y, and are consistent with previous measurements. The ratio Λ¯/Λ, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio Λ¯/K0S, measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected. | ||
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