Λ+c production and baryon-to-meson ratios in pp and p-Pb collisions at √sNN=5.02 TeV at the LHC
dc.contributor.author | Acharya, Shreyasi | pt_BR |
dc.contributor.author | Gay Ducati, Maria Beatriz | pt_BR |
dc.contributor.author | Pereira, Luis Gustavo | pt_BR |
dc.contributor.author | Pezzi, Rafael Peretti | pt_BR |
dc.contributor.author | ALICE Collaboration | pt_BR |
dc.date.accessioned | 2022-02-16T04:30:44Z | pt_BR |
dc.date.issued | 2021 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/235191 | pt_BR |
dc.description.abstract | The prompt production of the charm baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at √sNN=5.02 TeV. These new measurements show a clear decrease of the Λ+c/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavor baryon-to-meson ratios p/π and Λ/K0S. At low pT, predictions that include additional color-reconnection mechanisms beyond the leading-color approximation, assume the existence of additional higher-mass charm-baryon states, or include hadronization via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e− and e−p collisions significantly underestimate the data. The results presented in this Letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 127, no. 20 (Nov. 2021), 202301, 13 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Colisao de ions pesados | pt_BR |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.title | Λ+c production and baryon-to-meson ratios in pp and p-Pb collisions at √sNN=5.02 TeV at the LHC | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001136789 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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