Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/195577 |
Resumo: | We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy ffiffiffi s p ¼ 7 TeV. Jets with pseudorapidity jηj < 0.5 are reconstructed from charged particles using the anti-kT jet-finding algorithm with a resolution parameter R ¼ 0.4. The jet cross section is measured in the transverse momentum interval 5 ≤ pch jet T < 100 GeV=c. Jet fragmentation is studied measuring the scaled transverse momentum spectra of the charged constituents of jets in four intervals of jet transverse momentum between 5 and 30 GeV=c. The measurements are compared to calculations from the PYTHIA model as well as next-to-leading-order perturbative QCD calculations with POWHEG+PYTHIA8. The charged jet cross section is well described by POWHEG for the entire measured range of pch jet T . For pch jet T > 40 GeV=c, the PYTHIA calculations also agree with the measured charged jet cross section. PYTHIA6 simulations describe the fragmentation distributions to 15%. Larger discrepancies are observed for PYTHIA8. |
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Acharya, ShreyasiGay Ducati, Maria BeatrizPereira, Luis GustavoPezzi, Rafael PerettiALICE Collaboration2019-06-06T02:35:04Z20191550-7998http://hdl.handle.net/10183/195577001091066We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy ffiffiffi s p ¼ 7 TeV. Jets with pseudorapidity jηj < 0.5 are reconstructed from charged particles using the anti-kT jet-finding algorithm with a resolution parameter R ¼ 0.4. The jet cross section is measured in the transverse momentum interval 5 ≤ pch jet T < 100 GeV=c. Jet fragmentation is studied measuring the scaled transverse momentum spectra of the charged constituents of jets in four intervals of jet transverse momentum between 5 and 30 GeV=c. The measurements are compared to calculations from the PYTHIA model as well as next-to-leading-order perturbative QCD calculations with POWHEG+PYTHIA8. The charged jet cross section is well described by POWHEG for the entire measured range of pch jet T . For pch jet T > 40 GeV=c, the PYTHIA calculations also agree with the measured charged jet cross section. PYTHIA6 simulations describe the fragmentation distributions to 15%. Larger discrepancies are observed for PYTHIA8.application/pdfengPhysical review. D, Particles, fields, gravitation, and cosmology. College Park. Vol. 99, no. 1 (Jan. 2019), 012016, 16 p.Colisões proton-protonAceleradores de partículasCharged jet cross section and fragmentation in proton-proton collisions at √s = 7 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:UFRGSTEXT001091066.pdf.txt001091066.pdf.txtExtracted Texttext/plain81577http://www.lume.ufrgs.br/bitstream/10183/195577/2/001091066.pdf.txt3a58c7456f5b70a4fb2ba2ebde326eb3MD52ORIGINAL001091066.pdfTexto completo (inglês)application/pdf461898http://www.lume.ufrgs.br/bitstream/10183/195577/1/001091066.pdf536ffb61f6470b92b5190ff1e5bc07f0MD5110183/1955772023-11-12 04:24:13.949324oai:www.lume.ufrgs.br:10183/195577Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-12T06:24:13Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
title |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
spellingShingle |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV Acharya, Shreyasi Colisões proton-proton Aceleradores de partículas |
title_short |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
title_full |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
title_fullStr |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
title_full_unstemmed |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 TeV |
title_sort |
Charged jet cross section and fragmentation in proton-proton collisions at √s = 7 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 |
We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy ffiffiffi s p ¼ 7 TeV. Jets with pseudorapidity jηj < 0.5 are reconstructed from charged particles using the anti-kT jet-finding algorithm with a resolution parameter R ¼ 0.4. The jet cross section is measured in the transverse momentum interval 5 ≤ pch jet T < 100 GeV=c. Jet fragmentation is studied measuring the scaled transverse momentum spectra of the charged constituents of jets in four intervals of jet transverse momentum between 5 and 30 GeV=c. The measurements are compared to calculations from the PYTHIA model as well as next-to-leading-order perturbative QCD calculations with POWHEG+PYTHIA8. The charged jet cross section is well described by POWHEG for the entire measured range of pch jet T . For pch jet T > 40 GeV=c, the PYTHIA calculations also agree with the measured charged jet cross section. PYTHIA6 simulations describe the fragmentation distributions to 15%. Larger discrepancies are observed for PYTHIA8. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-06-06T02:35:04Z |
dc.date.issued.fl_str_mv |
2019 |
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/10183/195577 |
dc.identifier.issn.pt_BR.fl_str_mv |
1550-7998 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001091066 |
identifier_str_mv |
1550-7998 001091066 |
url |
http://hdl.handle.net/10183/195577 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. D, Particles, fields, gravitation, and cosmology. College Park. Vol. 99, no. 1 (Jan. 2019), 012016, 16 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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Repositório Institucional da UFRGS |
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