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

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)2168
Number of pages1
JournalEuropean Physical Journal C: Particles and Fields
Early online date22 Jun 2012
Publication statusPublished - Oct 2012


The charged-particle production ratios pˉ/p, K−/K+, π−/π+, (p+pˉ)/(π++π−), (K++K−)/(π++π−) and (p+pˉ)/(K++K−) are measured with the LHCb detector using 0.3nb−1 of pp collisions delivered by the LHC at s√=0.9 TeV and 1.8nb−1 at s√=7 TeV. The measurements are performed as a function of transverse momentum pT 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 pˉ/p is also considered as a function of rapidity loss, Δy≡ybeam−y, and is used to constrain models of baryon transport.

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