Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/211741 |
Resumo: | The production of the Λ(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s√=7 TeV and in p–Pb collisions at sNN√=5.02 TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ(1520) →pK− and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, K0S, p, Λ) describes the shape of the Λ(1520) transverse momentum distribution up to 3.5 GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ(1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ(1520) yield. |
id |
UFRGS-2_7ae25b200acab308d847ac9d697948fb |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/211741 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Acharya, ShreyasiGay Ducati, Maria BeatrizPereira, Luis GustavoPezzi, Rafael PerettiALICE Collaboration2020-07-10T03:42:30Z20201434-6044http://hdl.handle.net/10183/211741001114709The production of the Λ(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s√=7 TeV and in p–Pb collisions at sNN√=5.02 TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ(1520) →pK− and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, K0S, p, Λ) describes the shape of the Λ(1520) transverse momentum distribution up to 3.5 GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ(1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ(1520) yield.application/pdfengThe European physical journal. C, Particles and fields. Berlin. Vol. 80, no. 2 (Feb. 2020), 160, 19 p.Aceleradores de partículasColisao de ions pesadosColisões proton-protonMeasurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 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:UFRGSTEXT001114709.pdf.txt001114709.pdf.txtExtracted Texttext/plain100187http://www.lume.ufrgs.br/bitstream/10183/211741/2/001114709.pdf.txtbdadea4210ebb5885019c9d386b263ceMD52ORIGINAL001114709.pdfTexto completo (inglês)application/pdf1205318http://www.lume.ufrgs.br/bitstream/10183/211741/1/001114709.pdf27890af52e61cf1eece01a04315c78ffMD5110183/2117412023-11-15 04:27:22.905321oai:www.lume.ufrgs.br:10183/211741Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-15T06:27:22Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
title |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
spellingShingle |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV Acharya, Shreyasi Aceleradores de partículas Colisao de ions pesados Colisões proton-proton |
title_short |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
title_full |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
title_fullStr |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
title_full_unstemmed |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 TeV |
title_sort |
Measurement of Λ (1520) production in pp collisions at √s=7 TeV and p–Pb collisions at √sNN=5.02 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 |
Aceleradores de partículas Colisao de ions pesados Colisões proton-proton |
topic |
Aceleradores de partículas Colisao de ions pesados Colisões proton-proton |
description |
The production of the Λ(1520) baryonic resonance has been measured at midrapidity in inelastic pp collisions at s√=7 TeV and in p–Pb collisions at sNN√=5.02 TeV for non-single diffractive events and in multiplicity classes. The resonance is reconstructed through its hadronic decay channel Λ(1520) →pK− and the charge conjugate with the ALICE detector. The integrated yields and mean transverse momenta are calculated from the measured transverse momentum distributions in pp and p–Pb collisions. The mean transverse momenta follow mass ordering as previously observed for other hyperons in the same collision systems. A Blast-Wave function constrained by other light hadrons (π, K, K0S, p, Λ) describes the shape of the Λ(1520) transverse momentum distribution up to 3.5 GeV/c in p–Pb collisions. In the framework of this model, this observation suggests that the Λ(1520) resonance participates in the same collective radial flow as other light hadrons. The ratio of the yield of Λ(1520) to the yield of the ground state particle Λ remains constant as a function of charged-particle multiplicity, suggesting that there is no net effect of the hadronic phase in p–Pb collisions on the Λ(1520) yield. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-07-10T03:42:30Z |
dc.date.issued.fl_str_mv |
2020 |
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/10183/211741 |
dc.identifier.issn.pt_BR.fl_str_mv |
1434-6044 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001114709 |
identifier_str_mv |
1434-6044 001114709 |
url |
http://hdl.handle.net/10183/211741 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The European physical journal. C, Particles and fields. Berlin. Vol. 80, no. 2 (Feb. 2020), 160, 19 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 |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/211741/2/001114709.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/211741/1/001114709.pdf |
bitstream.checksum.fl_str_mv |
bdadea4210ebb5885019c9d386b263ce 27890af52e61cf1eece01a04315c78ff |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1798487438585233408 |