Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV

Detalhes bibliográficos
Autor(a) principal: Acharya, Shreyasi
Data de Publicação: 2022
Outros Autores: Gay Ducati, Maria Beatriz, Pereira, Luis Gustavo, Pezzi, Rafael Peretti, ALICE Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/236804
Resumo: The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,++c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at √s=13  TeV. This is the first measurement of Σ0,++c production in hadronic collisions. Assuming the same production yield for the three Σ0,+,++c isospin states, the baryon-to-meson cross section ratios Σ0,+,++c/D0 and Λ+c/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24  GeV/c. Values significantly larger than in e+e− collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λ+c production from Σ0,+,++c is also reported and is found to be larger than in e+e− collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.
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spelling Acharya, ShreyasiGay Ducati, Maria BeatrizPereira, Luis GustavoPezzi, Rafael PerettiALICE Collaboration2022-04-07T04:49:20Z20220031-9007http://hdl.handle.net/10183/236804001137544The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,++c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at √s=13  TeV. This is the first measurement of Σ0,++c production in hadronic collisions. Assuming the same production yield for the three Σ0,+,++c isospin states, the baryon-to-meson cross section ratios Σ0,+,++c/D0 and Λ+c/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24  GeV/c. Values significantly larger than in e+e− collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λ+c production from Σ0,+,++c is also reported and is found to be larger than in e+e− collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.application/pdfengPhysical review letters. Melville. Vol. 128, no. 1 (Jan. 2022), 012001, 13 p.Colisões proton-protonAceleradores de partículasMeasurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeVEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001137544.pdf.txt001137544.pdf.txtExtracted Texttext/plain65374http://www.lume.ufrgs.br/bitstream/10183/236804/2/001137544.pdf.txte9ad837cb3ea3052e80e3f740b95da76MD52ORIGINAL001137544.pdfTexto completo (inglês)application/pdf688031http://www.lume.ufrgs.br/bitstream/10183/236804/1/001137544.pdfd611c491d8d49bee2d9cc1aa57071d22MD5110183/2368042023-11-15 04:26:44.04355oai:www.lume.ufrgs.br:10183/236804Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-15T06:26:44Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
title Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
spellingShingle Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
Acharya, Shreyasi
Colisões proton-proton
Aceleradores de partículas
title_short Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
title_full Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
title_fullStr Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
title_full_unstemmed Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
title_sort Measurement of prompt D0, Λ+c, and Σ0,++c(2455) production in proton-proton collisions at at √s=13  TeV
author Acharya, Shreyasi
author_facet Acharya, Shreyasi
Gay Ducati, Maria Beatriz
Pereira, Luis Gustavo
Pezzi, Rafael Peretti
ALICE Collaboration
author_role author
author2 Gay Ducati, Maria Beatriz
Pereira, Luis Gustavo
Pezzi, Rafael Peretti
ALICE Collaboration
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Acharya, Shreyasi
Gay Ducati, Maria Beatriz
Pereira, Luis Gustavo
Pezzi, Rafael Peretti
ALICE Collaboration
dc.subject.por.fl_str_mv Colisões proton-proton
Aceleradores de partículas
topic Colisões proton-proton
Aceleradores de partículas
description The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,++c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at √s=13  TeV. This is the first measurement of Σ0,++c production in hadronic collisions. Assuming the same production yield for the three Σ0,+,++c isospin states, the baryon-to-meson cross section ratios Σ0,+,++c/D0 and Λ+c/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24  GeV/c. Values significantly larger than in e+e− collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λ+c production from Σ0,+,++c is also reported and is found to be larger than in e+e− collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.
publishDate 2022
dc.date.accessioned.fl_str_mv 2022-04-07T04:49:20Z
dc.date.issued.fl_str_mv 2022
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/236804
dc.identifier.issn.pt_BR.fl_str_mv 0031-9007
dc.identifier.nrb.pt_BR.fl_str_mv 001137544
identifier_str_mv 0031-9007
001137544
url http://hdl.handle.net/10183/236804
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review letters. Melville. Vol. 128, no. 1 (Jan. 2022), 012001, 13 p.
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eu_rights_str_mv openAccess
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instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
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institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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