Two-photon final states in peripheral heavy ion collisions
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1142/9789812704214_0023 http://hdl.handle.net/11449/23419 |
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 gamma gamma -> gamma gamma 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 ovewhelms the continuum one. It is also investigated the possibility of observing a scalar resonance (the sigma meson) in this process. Assuming for the sigma, 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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spelling |
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 gamma gamma -> gamma gamma 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 ovewhelms the continuum one. It is also investigated the possibility of observing a scalar resonance (the sigma meson) in this process. Assuming for the sigma, 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.Univ Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, BR-01405 São Paulo, BrazilWorld Scientific Publ Co Pte LtdUniversidade Estadual Paulista (Unesp)Roldao, C. G.2014-05-20T14:06:42Z2014-05-20T14:06:42Z2003-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject223-227http://dx.doi.org/10.1142/9789812704214_0023Electromagnetic Probes of Fundamental Physics. Singapore: World Scientific Publ Co Pte Ltd, v. 22, p. 223-227, 2003.http://hdl.handle.net/11449/2341910.1142/9789812704214_0023WOS:000229800500023Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectromagnetic Probes of Fundamental Physicsinfo:eu-repo/semantics/openAccess2021-10-23T21:41:22Zoai:repositorio.unesp.br:11449/23419Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:47:37.006100Repositório 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 Roldao, C. G. |
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 |
Roldao, C. G. |
author_facet |
Roldao, C. G. |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Roldao, C. G. |
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 gamma gamma -> gamma gamma 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 ovewhelms the continuum one. It is also investigated the possibility of observing a scalar resonance (the sigma meson) in this process. Assuming for the sigma, 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 |
2003 |
dc.date.none.fl_str_mv |
2003-01-01 2014-05-20T14:06:42Z 2014-05-20T14:06:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1142/9789812704214_0023 Electromagnetic Probes of Fundamental Physics. Singapore: World Scientific Publ Co Pte Ltd, v. 22, p. 223-227, 2003. http://hdl.handle.net/11449/23419 10.1142/9789812704214_0023 WOS:000229800500023 |
url |
http://dx.doi.org/10.1142/9789812704214_0023 http://hdl.handle.net/11449/23419 |
identifier_str_mv |
Electromagnetic Probes of Fundamental Physics. Singapore: World Scientific Publ Co Pte Ltd, v. 22, p. 223-227, 2003. 10.1142/9789812704214_0023 WOS:000229800500023 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electromagnetic Probes of Fundamental Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
223-227 |
dc.publisher.none.fl_str_mv |
World Scientific Publ Co Pte Ltd |
publisher.none.fl_str_mv |
World Scientific Publ Co Pte Ltd |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128418246557696 |