The charged−particle production ratios p/p, K −/K +, π −/π +, (p + p)/(π ++π −), (K ++K −)/(π + + π −) ; (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 ; 1.8 nb−1 at √s = 7 TeV. The measurements are performed as a function of transverse momentum p<inf>T</inf> ; 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<inf>beam</inf> − y, ; is used to constrain models of baryon transport. © 2012, CERN for the benefit of the LHCb collaboration.

Measurement of prompt hadron production ratios in pp collisions at √s = 0.9 ; 7 TeV

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2012

Abstract

The charged−particle production ratios p/p, K −/K +, π −/π +, (p + p)/(π ++π −), (K ++K −)/(π + + π −) ; (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 ; 1.8 nb−1 at √s = 7 TeV. The measurements are performed as a function of transverse momentum pT ; 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 ≡ ybeam − y, ; is used to constrain models of baryon transport. © 2012, CERN for the benefit of the LHCb collaboration.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11586/179795
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