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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/57959
Measurement of V 0 production ratios in pp collisions at s √ = 0.9 and 7 TeV
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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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CALVO GÓMEZ, Míriam, et al. Measurement of V 0 production ratios in pp collisions at s √ = 0.9 and 7 TeV. Journal of High Energy Physics. 2011. Vol. 8, num. 34, pags. 1-22. ISSN 1126-6708. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/57959