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Title: | Measurement of prompt hadron production ratios in pp collisions at s√= 0.9 and 7 TeV |
Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Energia nuclear Astronomia Astrofísica Teoria quàntica de camps Física nuclear Hadrons Nuclear energy Astronomy Astrophysics Quantum field theory Nuclear physics Hadrons |
Issue Date: | Jun-2012 |
Publisher: | Società Italiana di Fisica & Springer Verlag |
Abstract: | The charged-particle production ratios p¯/p, K −/K +, π −/π +, (p+p¯)/(π++π−), (K ++K −)/(π ++π −) and (p+p¯)/(K++K−) are measured with the LHCb detector using 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. The measurements are performed as a function of transverse momentum p T and pseudorapidity η. The production ratios are compared to the predictions of several Monte Carlo generator settings, none of which are able to describe adequately all observables. The ratio p¯/p is also considered as a function of rapidity loss, Δy≡y beam−y, and is used to constrain models of baryon transport. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1140/epjc/s10052-012-2168-x |
It is part of: | European Physical Journal C, 2012, vol. 72, p. 2168 |
URI: | http://hdl.handle.net/2445/58786 |
Related resource: | http://dx.doi.org/10.1140/epjc/s10052-012-2168-x |
ISSN: | 1434-6044 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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