Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/184924 |
Resumo: | The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high-transverse momentum trigger hadron in p–Pb collisions at √sNN=5.02TeV. Jets are reconstructed from charged-particle tracks using the anti-kTalgorithm with resolution parameter R =0.2and 0.4. Adata-driven statistical approach is used to correct the uncorrelated background jet yield. Recoil jet distributions are reported for jet transverse momentum 15 <pchT,jet<50 GeV/cand are compared in various intervals of p–Pb event activity, based on charged-particle multiplicity and zero-degree neutral energy in the forward (Pb-going) direction. The semi-inclusive observable is self-normalized and such comparisons do not require the interpretation of p–Pb event activity in terms of collision geometry, in contrast to inclusive jet observables. These measurements provide new constraints on the magnitude of jet quenching in small systems at the LHC. In p–Pb collisions with high event activity, the average medium-induced out-of-cone energy transport for jets with R =0.4and 15 <pchT,jet<50 GeV/cis measured to be less than 0.4GeV/cat 90% confidence, which is over an order of magnitude smaller than a similar measurement for central Pb–Pb collisions at √sNN=2.76 TeV. Comparison is made to theoretical calculations of jet quenching in small systems, and to inclusive jet measurements in p–Pb collisions selected by event activity at the LHC and in d–Au collisions at RHIC. |
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Acharya, ShreyasiGay Ducati, Maria BeatrizPereira, Luis GustavoPezzi, Rafael PerettiALICE Collaboration2018-11-22T02:48:45Z20180370-2693http://hdl.handle.net/10183/184924001080808The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high-transverse momentum trigger hadron in p–Pb collisions at √sNN=5.02TeV. Jets are reconstructed from charged-particle tracks using the anti-kTalgorithm with resolution parameter R =0.2and 0.4. Adata-driven statistical approach is used to correct the uncorrelated background jet yield. Recoil jet distributions are reported for jet transverse momentum 15 <pchT,jet<50 GeV/cand are compared in various intervals of p–Pb event activity, based on charged-particle multiplicity and zero-degree neutral energy in the forward (Pb-going) direction. The semi-inclusive observable is self-normalized and such comparisons do not require the interpretation of p–Pb event activity in terms of collision geometry, in contrast to inclusive jet observables. These measurements provide new constraints on the magnitude of jet quenching in small systems at the LHC. In p–Pb collisions with high event activity, the average medium-induced out-of-cone energy transport for jets with R =0.4and 15 <pchT,jet<50 GeV/cis measured to be less than 0.4GeV/cat 90% confidence, which is over an order of magnitude smaller than a similar measurement for central Pb–Pb collisions at √sNN=2.76 TeV. Comparison is made to theoretical calculations of jet quenching in small systems, and to inclusive jet measurements in p–Pb collisions selected by event activity at the LHC and in d–Au collisions at RHIC.application/pdfengPhysics letters. B. Amsterdam. Vol. 783 (Aug. 2018), p. 95-113Aceleradores de partículasColisao de ions pesadosHadronsConstraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributionsEstrangeiroinfo: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:UFRGSTEXT001080808.pdf.txt001080808.pdf.txtExtracted Texttext/plain118944http://www.lume.ufrgs.br/bitstream/10183/184924/2/001080808.pdf.txt6570389e7888bbc616267bea88929b9cMD52ORIGINAL001080808.pdfTexto completo (inglês)application/pdf1062719http://www.lume.ufrgs.br/bitstream/10183/184924/1/001080808.pdf794392582a5b003d6ddeef85902c68fcMD5110183/1849242023-11-29 04:24:11.16482oai:www.lume.ufrgs.br:10183/184924Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-29T06:24:11Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
title |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
spellingShingle |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions Acharya, Shreyasi Aceleradores de partículas Colisao de ions pesados Hadrons |
title_short |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
title_full |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
title_fullStr |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
title_full_unstemmed |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
title_sort |
Constraints on jet quenching in p–Pb collisions at √sNN=5.02 measured by the event-activity dependence of semi-inclusive hadron-jet distributions |
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 |
Aceleradores de partículas Colisao de ions pesados Hadrons |
topic |
Aceleradores de partículas Colisao de ions pesados Hadrons |
description |
The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high-transverse momentum trigger hadron in p–Pb collisions at √sNN=5.02TeV. Jets are reconstructed from charged-particle tracks using the anti-kTalgorithm with resolution parameter R =0.2and 0.4. Adata-driven statistical approach is used to correct the uncorrelated background jet yield. Recoil jet distributions are reported for jet transverse momentum 15 <pchT,jet<50 GeV/cand are compared in various intervals of p–Pb event activity, based on charged-particle multiplicity and zero-degree neutral energy in the forward (Pb-going) direction. The semi-inclusive observable is self-normalized and such comparisons do not require the interpretation of p–Pb event activity in terms of collision geometry, in contrast to inclusive jet observables. These measurements provide new constraints on the magnitude of jet quenching in small systems at the LHC. In p–Pb collisions with high event activity, the average medium-induced out-of-cone energy transport for jets with R =0.4and 15 <pchT,jet<50 GeV/cis measured to be less than 0.4GeV/cat 90% confidence, which is over an order of magnitude smaller than a similar measurement for central Pb–Pb collisions at √sNN=2.76 TeV. Comparison is made to theoretical calculations of jet quenching in small systems, and to inclusive jet measurements in p–Pb collisions selected by event activity at the LHC and in d–Au collisions at RHIC. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-11-22T02:48:45Z |
dc.date.issued.fl_str_mv |
2018 |
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/10183/184924 |
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001080808 |
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0370-2693 001080808 |
url |
http://hdl.handle.net/10183/184924 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 783 (Aug. 2018), p. 95-113 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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