Two-photon final states in peripheral heavy ion collisions
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevC.65.014902 http://hdl.handle.net/11449/66765 |
Resumo: | We discuss processes leading to two photon final states in peripheral heavy ion collisions at RHIC. Due to the large photon luminosity we show that the continuum subprocess γγ→ γγ can be observed with a large number of events. We study this reaction when it is intermediated by a resonance made of quarks or gluons and discuss its interplay with the continuum process, verifying that in several cases the resonant process overwhelms the continuum one. It also investigated the possibility of observing a scalar resonance (the σ meson) in this process. Assuming for the σ the mass and total decay width values recently reported by the E791 Collaboration we show that RHIC may detect this particle in its two photon decay mode if its partial photonic decay width is of the order of the ones discussed in the literature. |
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Two-photon final states in peripheral heavy ion collisionsWe discuss processes leading to two photon final states in peripheral heavy ion collisions at RHIC. Due to the large photon luminosity we show that the continuum subprocess γγ→ γγ can be observed with a large number of events. We study this reaction when it is intermediated by a resonance made of quarks or gluons and discuss its interplay with the continuum process, verifying that in several cases the resonant process overwhelms the continuum one. It also investigated the possibility of observing a scalar resonance (the σ meson) in this process. Assuming for the σ the mass and total decay width values recently reported by the E791 Collaboration we show that RHIC may detect this particle in its two photon decay mode if its partial photonic decay width is of the order of the ones discussed in the literature.Instituto de Fisica Teorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SPInstituto de Fisica Teorica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo, SPUniversidade Estadual Paulista (Unesp)Natale, A. A. [UNESP]Roldão, C. G. [UNESP]Carneiro, J. P V [UNESP]2014-05-27T11:20:23Z2014-05-27T11:20:23Z2002-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article149021-1490210application/pdfhttp://dx.doi.org/10.1103/PhysRevC.65.014902Physical Review C - Nuclear Physics, v. 65, n. 1, p. 149021-1490210, 2002.0556-2813http://hdl.handle.net/11449/6676510.1103/PhysRevC.65.014902WOS:0001733080000362-s2.0-00363416072-s2.0-0036341607.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review C: Nuclear Physicsinfo:eu-repo/semantics/openAccess2024-01-11T06:28:01Zoai:repositorio.unesp.br:11449/66765Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-11T06:28:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Two-photon final states in peripheral heavy ion collisions |
title |
Two-photon final states in peripheral heavy ion collisions |
spellingShingle |
Two-photon final states in peripheral heavy ion collisions Natale, A. A. [UNESP] |
title_short |
Two-photon final states in peripheral heavy ion collisions |
title_full |
Two-photon final states in peripheral heavy ion collisions |
title_fullStr |
Two-photon final states in peripheral heavy ion collisions |
title_full_unstemmed |
Two-photon final states in peripheral heavy ion collisions |
title_sort |
Two-photon final states in peripheral heavy ion collisions |
author |
Natale, A. A. [UNESP] |
author_facet |
Natale, A. A. [UNESP] Roldão, C. G. [UNESP] Carneiro, J. P V [UNESP] |
author_role |
author |
author2 |
Roldão, C. G. [UNESP] Carneiro, J. P V [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Natale, A. A. [UNESP] Roldão, C. G. [UNESP] Carneiro, J. P V [UNESP] |
description |
We discuss processes leading to two photon final states in peripheral heavy ion collisions at RHIC. Due to the large photon luminosity we show that the continuum subprocess γγ→ γγ can be observed with a large number of events. We study this reaction when it is intermediated by a resonance made of quarks or gluons and discuss its interplay with the continuum process, verifying that in several cases the resonant process overwhelms the continuum one. It also investigated the possibility of observing a scalar resonance (the σ meson) in this process. Assuming for the σ the mass and total decay width values recently reported by the E791 Collaboration we show that RHIC may detect this particle in its two photon decay mode if its partial photonic decay width is of the order of the ones discussed in the literature. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-01-01 2014-05-27T11:20:23Z 2014-05-27T11:20:23Z |
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.65.014902 Physical Review C - Nuclear Physics, v. 65, n. 1, p. 149021-1490210, 2002. 0556-2813 http://hdl.handle.net/11449/66765 10.1103/PhysRevC.65.014902 WOS:000173308000036 2-s2.0-0036341607 2-s2.0-0036341607.pdf |
url |
http://dx.doi.org/10.1103/PhysRevC.65.014902 http://hdl.handle.net/11449/66765 |
identifier_str_mv |
Physical Review C - Nuclear Physics, v. 65, n. 1, p. 149021-1490210, 2002. 0556-2813 10.1103/PhysRevC.65.014902 WOS:000173308000036 2-s2.0-0036341607 2-s2.0-0036341607.pdf |
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.format.none.fl_str_mv |
149021-1490210 application/pdf |
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_ |
1799965585821401088 |