Prompt charm production in pp collisions at sqrt(s)=7 TeV

By L. C. R. Aaij, C. Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio and 609 more. 2013

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Charm production at the LHC in pp collisions at s√=7 TeV is studied with the LHCb detector. The decays D0→K−π+, D+→K−π+π+, D⁎+→D0(K−π+)π+, D+s→ϕ(K−K+)π+, Λ+c→pK−π+, and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb−1. Differential cross-sections dσ/dpT are measured for prompt production of the five charmed hadron species in bins of transverse momentum and rapidity in the region 0<pT<8 GeV/c and 2.0<y<4.5. Theoretical predictions are compared to the measured differential cross-sections. The integrated cross-sections of the charm hadrons are computed in the above pT-y range, and their ratios are reported. A combination of the five integrated cross-section measurements gives σ(cc¯)pT<8 GeV/c,2.0<y<4.5=1419±12(stat)±116(syst)±65(frag) μb, where the uncertainties are statistical, systematic, and due to the fragmentation functions.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3eee74616948a59d141df7c410cbefd907e1c90c

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In Nuclear and High Energy Physics

Citations in the corpus

The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II (2015, methodology): “Measurements of inclusive beauty and charm quark production have been performed [33,198] using data collected in 2010 and 2011 at 7 TeV.”
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era (2018, background): “Given the large Λc fiducial cross-section measured by LHCb at √ s = 7 TeV [261], and the recent discovery of the doubly charmed Ξ++ cc baryon [262] there is now the experimental possibility to execute a broad charmed baryon programme.”