Λc+ production in Pb–Pb collisions at √sNN=5.02 TeV
| العنوان: | Λc+ production in Pb–Pb collisions at √sNN=5.02 TeV |
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| المؤلفون: | Acharya, S., Antičić, Tome, Erhardt, Filip, Gotovac, Sven, Jerčić, Marko, Lončar, Petra, Mudnić, Eugen, Planinić, Mirko, Poljak, Nikola, Utrobičić, Antonija, Vicković, Linda, Zurlo, N. |
| المصدر: | Physics Letters B Volume 793 |
| بيانات النشر: | Elsevier: SCOAP3, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | coalescence, quark hadronization, Physics, nucleus, High Energy Physics::Phenomenology, hierarchy, transverse momentum, meson, NATURAL SCIENCES. Physics, baryon, PRIRODNE ZNANOSTI. Fizika, CERN LHC Coll, ALICE, fragmentation, heavy ion scattering, p p scattering, High Energy Physics::Experiment, charm, Nuclear Experiment, statistical, hadronic decay |
| الوصف: | A measurement of the production of prompt Λc+ baryons in Pb–Pb collisions at √sNN=5.02 TeV with the ALICE detector at the LHC is reported. The Λc+ and Λ‾c− were reconstructed at midrapidity ( |y| GeV/c and 0–80%. The Λc+/D0 ratio, which is sensitive to the charm quark hadronisation mechanisms in the medium, is measured and found to be larger than the ratio measured in minimum-bias pp collisions at √s=7 TeV and in p–Pb collisions at √sNN=5.02 TeV. In particular, the values in p–Pb and Pb–Pb collisions differ by about two standard deviations of the combined statistical and systematic uncertainties in the common pT interval covered by the measurements in the two collision systems. The Λc+/D0 ratio is also compared with model calculations including different implementations of charm quark hadronisation. The measured ratio is reproduced by models implementing a pure coalescence scenario, while adding a fragmentation contribution leads to an underestimation. The Λc+ nuclear modification factor, RAA , is also presented. The measured values of the RAA of Λc+ , Ds+ and non-strange D mesons are compatible within the combined statistical and systematic uncertainties. They show, however, a hint of a hierarchy (RAAD0 < RAADs+ < RAAΛc+) , conceivable with a contribution from coalescence mechanisms to charm hadron formation in the medium. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0370-2693 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::4b7b47b95a29ad69670f024077f6f493 http://fulir.irb.hr/4934/ |
| Rights: | OPEN |
| رقم الانضمام: | edsair.dedup.wf.001..4b7b47b95a29ad69670f024077f6f493 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03702693 |
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