Squeezed K+K- correlations in high energy heavy ion collisions
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevC.82.034905 http://hdl.handle.net/11449/226058 |
Resumo: | The hot and dense medium formed in high energy heavy ion collisions may modify some hadronic properties. In particular, if hadron masses are shifted in-medium, it was demonstrated that this could lead to back-to-back squeezed correlations (BBC) of particle-antiparticle pairs. Although well-established theoretically, the squeezed correlations have not yet been discovered experimentally. A method has been suggested for the empirical search of this effect, which was previously illustrated for ΦΦ pairs. We apply here the formalism and the suggested method to the case of K+K- pairs, since they may be easier to identify experimentally. The time distribution of the emission process plays a crucial role in the survival of the BBC's. We analyze the cases where the emission is supposed to occur suddenly or via a Lorentzian distribution, and compare with the case of a Lévy distribution in time. Effects of squeezing on the correlation function of identical particles are also analyzed. © 2010 The American Physical Society. |
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Squeezed K+K- correlations in high energy heavy ion collisionsThe hot and dense medium formed in high energy heavy ion collisions may modify some hadronic properties. In particular, if hadron masses are shifted in-medium, it was demonstrated that this could lead to back-to-back squeezed correlations (BBC) of particle-antiparticle pairs. Although well-established theoretically, the squeezed correlations have not yet been discovered experimentally. A method has been suggested for the empirical search of this effect, which was previously illustrated for ΦΦ pairs. We apply here the formalism and the suggested method to the case of K+K- pairs, since they may be easier to identify experimentally. The time distribution of the emission process plays a crucial role in the survival of the BBC's. We analyze the cases where the emission is supposed to occur suddenly or via a Lorentzian distribution, and compare with the case of a Lévy distribution in time. Effects of squeezing on the correlation function of identical particles are also analyzed. © 2010 The American Physical Society.Instituto de Física Teórica UNESP, C. P. 70532-2, 01156-970 São Paulo, SPInstituto de Física Teórica UNESP, C. P. 70532-2, 01156-970 São Paulo, SPUniversidade Estadual Paulista (UNESP)Dudek, Danuce M. [UNESP]Padula, Sandra S. [UNESP]2022-04-28T21:25:07Z2022-04-28T21:25:07Z2010-09-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevC.82.034905Physical Review C - Nuclear Physics, v. 82, n. 3, 2010.1089-490X0556-2813http://hdl.handle.net/11449/22605810.1103/PhysRevC.82.0349052-s2.0-77957316193Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review C - Nuclear Physicsinfo:eu-repo/semantics/openAccess2022-04-28T21:25:07Zoai:repositorio.unesp.br:11449/226058Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T21:25:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Squeezed K+K- correlations in high energy heavy ion collisions |
title |
Squeezed K+K- correlations in high energy heavy ion collisions |
spellingShingle |
Squeezed K+K- correlations in high energy heavy ion collisions Dudek, Danuce M. [UNESP] |
title_short |
Squeezed K+K- correlations in high energy heavy ion collisions |
title_full |
Squeezed K+K- correlations in high energy heavy ion collisions |
title_fullStr |
Squeezed K+K- correlations in high energy heavy ion collisions |
title_full_unstemmed |
Squeezed K+K- correlations in high energy heavy ion collisions |
title_sort |
Squeezed K+K- correlations in high energy heavy ion collisions |
author |
Dudek, Danuce M. [UNESP] |
author_facet |
Dudek, Danuce M. [UNESP] Padula, Sandra S. [UNESP] |
author_role |
author |
author2 |
Padula, Sandra S. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Dudek, Danuce M. [UNESP] Padula, Sandra S. [UNESP] |
description |
The hot and dense medium formed in high energy heavy ion collisions may modify some hadronic properties. In particular, if hadron masses are shifted in-medium, it was demonstrated that this could lead to back-to-back squeezed correlations (BBC) of particle-antiparticle pairs. Although well-established theoretically, the squeezed correlations have not yet been discovered experimentally. A method has been suggested for the empirical search of this effect, which was previously illustrated for ΦΦ pairs. We apply here the formalism and the suggested method to the case of K+K- pairs, since they may be easier to identify experimentally. The time distribution of the emission process plays a crucial role in the survival of the BBC's. We analyze the cases where the emission is supposed to occur suddenly or via a Lorentzian distribution, and compare with the case of a Lévy distribution in time. Effects of squeezing on the correlation function of identical particles are also analyzed. © 2010 The American Physical Society. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-09-10 2022-04-28T21:25:07Z 2022-04-28T21:25:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevC.82.034905 Physical Review C - Nuclear Physics, v. 82, n. 3, 2010. 1089-490X 0556-2813 http://hdl.handle.net/11449/226058 10.1103/PhysRevC.82.034905 2-s2.0-77957316193 |
url |
http://dx.doi.org/10.1103/PhysRevC.82.034905 http://hdl.handle.net/11449/226058 |
identifier_str_mv |
Physical Review C - Nuclear Physics, v. 82, n. 3, 2010. 1089-490X 0556-2813 10.1103/PhysRevC.82.034905 2-s2.0-77957316193 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review C - Nuclear Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789250606858240 |