Measurement of prompt hadron production ratios in pp collisions at √s = 0.9 and 7 TeV
Journal
European Physical Journal C
Journal Volume
72
Journal Issue
10
Date Issued
2012
Author(s)
Aaij, R. et al. (LHCb Collaboration)
Abstract
The charged-particle production ratios p/p, K -/K + , -/ + , (p + p)/( + + -), (K + + K -)/( + + -) 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 . 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, y y beamy, and is used to constrain models of baryon transport.
Type
journal article