Measurement of strange baryon–antibaryon interactions with femtoscopic correlations
Autor(a) principal: | |
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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/10183/212584 |
Resumo: | Two-particle correlation functions were measured for pp, p, p, and pairs in Pb–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined p and p pairs and, for the first time, for pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal similarly strong interaction between measured baryon–antibaryon pairs, suggesting that they all annihilate in the same manner at the same pair relative momentum k∗. Moreover, the reported significant non-zero imaginary part and negative real part of the scattering length provide motivation for future baryon–antibaryon bound state searches. |
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Acharya, ShreyasiGay Ducati, Maria BeatrizPereira, Luis GustavoPezzi, Rafael PerettiALICE Collaboration2020-08-04T03:38:41Z20200370-2693http://hdl.handle.net/10183/212584001114875Two-particle correlation functions were measured for pp, p, p, and pairs in Pb–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined p and p pairs and, for the first time, for pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal similarly strong interaction between measured baryon–antibaryon pairs, suggesting that they all annihilate in the same manner at the same pair relative momentum k∗. Moreover, the reported significant non-zero imaginary part and negative real part of the scattering length provide motivation for future baryon–antibaryon bound state searches.application/pdfengPhysics letters. B. Amsterdam. Vol. 802 (Mar. 2020), 135223, 14 p.Aceleradores de partículasColisao de ions pesadosColisões proton-protonMeasurement of strange baryon–antibaryon interactions with femtoscopic correlationsEstrangeiroinfo: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:UFRGSTEXT001114875.pdf.txt001114875.pdf.txtExtracted Texttext/plain84226http://www.lume.ufrgs.br/bitstream/10183/212584/2/001114875.pdf.txte289d70e193142515422d2bfe58c5902MD52ORIGINAL001114875.pdfTexto completo (inglês)application/pdf1104653http://www.lume.ufrgs.br/bitstream/10183/212584/1/001114875.pdfe8896c426da1d4f3086b080b465c1a02MD5110183/2125842023-11-15 04:26:21.350548oai:www.lume.ufrgs.br:10183/212584Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-15T06:26:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
title |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
spellingShingle |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations Acharya, Shreyasi Aceleradores de partículas Colisao de ions pesados Colisões proton-proton |
title_short |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
title_full |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
title_fullStr |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
title_full_unstemmed |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
title_sort |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
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 |
Two-particle correlation functions were measured for pp, p, p, and pairs in Pb–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined p and p pairs and, for the first time, for pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal similarly strong interaction between measured baryon–antibaryon pairs, suggesting that they all annihilate in the same manner at the same pair relative momentum k∗. Moreover, the reported significant non-zero imaginary part and negative real part of the scattering length provide motivation for future baryon–antibaryon bound state searches. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-08-04T03:38:41Z |
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/10183/212584 |
dc.identifier.issn.pt_BR.fl_str_mv |
0370-2693 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001114875 |
identifier_str_mv |
0370-2693 001114875 |
url |
http://hdl.handle.net/10183/212584 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 802 (Mar. 2020), 135223, 14 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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Universidade Federal do Rio Grande do Sul (UFRGS) |
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UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
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http://www.lume.ufrgs.br/bitstream/10183/212584/2/001114875.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/212584/1/001114875.pdf |
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