Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.physletb.2003.11.066 http://hdl.handle.net/11449/23397 |
Resumo: | To estimate realistic cross sections in ultra peripheral heavy ion collisions we must remove effects of strong absorption. One method to eliminate these effects make use of a Glauber model calculation, where the nucleon-nucleon energy dependent cross sections at small impact parameter are suppressed. In another method we impose a geometrical cut on the minimal impact parameter of the nuclear collision ((b)min > R-1 + R-2, where R-i is the radius of ion 'i'). In this last case the effect of a possible nuclear radius dependence with the energy has not been considered in detail up to now. Here we introduce this effect showing that for final states with small invariant mass the effect is negligible. However when the final state has a relatively large invariant mass, e.g., an intermediate mass Higgs boson, the cross section can decrease up to 50%. (C) 2003 Published by Elsevier B.V. |
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Repositório Institucional da UNESP |
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2946 |
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Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radiusTo estimate realistic cross sections in ultra peripheral heavy ion collisions we must remove effects of strong absorption. One method to eliminate these effects make use of a Glauber model calculation, where the nucleon-nucleon energy dependent cross sections at small impact parameter are suppressed. In another method we impose a geometrical cut on the minimal impact parameter of the nuclear collision ((b)min > R-1 + R-2, where R-i is the radius of ion 'i'). In this last case the effect of a possible nuclear radius dependence with the energy has not been considered in detail up to now. Here we introduce this effect showing that for final states with small invariant mass the effect is negligible. However when the final state has a relatively large invariant mass, e.g., an intermediate mass Higgs boson, the cross section can decrease up to 50%. (C) 2003 Published by Elsevier B.V.Univ Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, BrazilUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, BrazilElsevier B.V.Universidade Estadual Paulista (Unesp)Roldao, C. G.Natale, A. A.2014-05-20T14:06:39Z2014-05-20T14:06:39Z2004-02-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article161-166application/pdfhttp://dx.doi.org/10.1016/j.physletb.2003.11.066Physics Letters B. Amsterdam: Elsevier B.V., v. 581, n. 3-4, p. 161-166, 2004.0370-2693http://hdl.handle.net/11449/2339710.1016/j.physletb.2003.11.066WOS:000188698300004WOS000188698300004.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysics Letters B4.2542,336info:eu-repo/semantics/openAccess2023-11-16T06:08:40Zoai:repositorio.unesp.br:11449/23397Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:48:47.362505Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
title |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
spellingShingle |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius Roldao, C. G. |
title_short |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
title_full |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
title_fullStr |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
title_full_unstemmed |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
title_sort |
Ultra peripheral heavy ion collisions and the energy dependence of the nuclear radius |
author |
Roldao, C. G. |
author_facet |
Roldao, C. G. Natale, A. A. |
author_role |
author |
author2 |
Natale, A. A. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Roldao, C. G. Natale, A. A. |
description |
To estimate realistic cross sections in ultra peripheral heavy ion collisions we must remove effects of strong absorption. One method to eliminate these effects make use of a Glauber model calculation, where the nucleon-nucleon energy dependent cross sections at small impact parameter are suppressed. In another method we impose a geometrical cut on the minimal impact parameter of the nuclear collision ((b)min > R-1 + R-2, where R-i is the radius of ion 'i'). In this last case the effect of a possible nuclear radius dependence with the energy has not been considered in detail up to now. Here we introduce this effect showing that for final states with small invariant mass the effect is negligible. However when the final state has a relatively large invariant mass, e.g., an intermediate mass Higgs boson, the cross section can decrease up to 50%. (C) 2003 Published by Elsevier B.V. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-02-19 2014-05-20T14:06:39Z 2014-05-20T14:06:39Z |
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/10.1016/j.physletb.2003.11.066 Physics Letters B. Amsterdam: Elsevier B.V., v. 581, n. 3-4, p. 161-166, 2004. 0370-2693 http://hdl.handle.net/11449/23397 10.1016/j.physletb.2003.11.066 WOS:000188698300004 WOS000188698300004.pdf |
url |
http://dx.doi.org/10.1016/j.physletb.2003.11.066 http://hdl.handle.net/11449/23397 |
identifier_str_mv |
Physics Letters B. Amsterdam: Elsevier B.V., v. 581, n. 3-4, p. 161-166, 2004. 0370-2693 10.1016/j.physletb.2003.11.066 WOS:000188698300004 WOS000188698300004.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics Letters B 4.254 2,336 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
161-166 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
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_ |
1808128861636919296 |