Article detail · 2018
Λ c + production in pp collisions at s = 7 $$ \\sqrt{s}=7 $$ TeV and in p-Pb collisions at s N N = 5.02 TeV
- Year
- 2018
- Type
- article
Data source split
- YÖKSİS YÖKSİS article record
- YÖKSİS venue Journal of High Energy Physics
- Catalog match (ISSN) Journal of High Energy Physics
- OpenAlex OpenAlex enrichment (abstract, citations, topics)
Abstract
OpenAlex · English
Abstract The p T-differential production cross section of prompt Λ c + charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at $$ \sqrt{s}=7 $$ s = 7 TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV at midrapidity. The Λ c + and $$ {\overline{\varLambda}}_{\overline{\mathrm{c}}} $$ Λ ¯ c ¯ were reconstructed in the hadronic decay modes Λ c + → pK− π +, Λ c + → pK S 0 and in the semileptonic channel Λ c + → e+ ν e Λ (and charge conjugates). The measured values of the Λ c + /D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and p T intervals, where the Λ c + production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ c + nuclear modification factor, R pPb, is also presented. The R pPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.
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87 citations
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44 publications in the local catalog that cite this work (OpenAlex reference match; not the full global list).
- The ALICE experiment: a journey through QCD 2024
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- Λc+ Production and Baryon-to-Meson Ratios in pp and p-Pb Collisions at sNN=5.02 TeV at the LHC 2021
- Λc+\n Production and Baryon-to-Meson Ratios in \npp\n and \np\n-Pb Collisions at \nsNN=5.02\u2009\u2009TeV\n at the LHC 2021
- Measurement of $${{\mathrm{D}}^0}$$, $${{\mathrm{D}}^+}$$, $${{\mathrm{D}}^{*+}}$$ and $${{\mathrm{D}}^+_{\mathrm{s}}}$$ production in pp collisions at $${\sqrt{{\textit{s}}}~=~5.02~{\text {TeV}}}$$ with ALICE 2019
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- Production of Λc+ baryons in proton-proton and lead-lead collisions at sNN=5.02TeV 2020
- Λc+ production in Pb–Pb collisions at sNN=5.02 TeV 2019
- Λc+ production in Pb\u2013Pb collisions at sNN=5.02 TeV 2019
- Measurement of beauty and charm production in pp collisions at $$ \sqrt{s} $$ = 5.02 TeV via non-prompt and prompt D mesons 2021