2026-04-13T06:58:28Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/579592025-12-05T16:50:12Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

RECERCAT author Calvo Gómez, Míriam author Camboni, Alessandro author Enterria i Adan, David G. d' author Garrido Beltrán, Lluís author Grabalosa Gándara, Marc author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author López Asamar, Elias author Musy, Marco author Pérez-Calero Yzquierdo, Antonio author Pie Valls, B. (Blai) author Potterat, Cédric author Puig Navarro, Albert author Ruiz, Hugo (Ruiz Pérez) author Vázquez Gómez, Ricard author Vilasis-Cardona, Xavier author LHCb Collaboration 2014-10-02T11:35:23Z2014-10-02T11:35:23Z20112014-10-02T11:35:23Z 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. cc-by, (c) LHCb Collaboration, 2011 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Hadrons Teoria quàntica de camps Teoria quàntica Gravitació Relativitat (Física) Hadrons Quantum field theory Quantum theory Gravitation Relativity (Physics) Measurement of V 0 production ratios in pp collisions at s √ = 0.9 and 7 TeV info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion