Soft pomerons and the forward LHC data
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/182135 |
Resumo: | Recent data from LHC13 by the TOTEM Collaboration on σtotand ρhave indicated disagreement with all the Pomeron model predictions by the COMPETE Collaboration (2002). On the other hand, as recently demonstrated by Martynov and Nicolescu (MN), the new σtotdatum and the unexpected decrease in the ρvalue are well described by the maximal Odderon dominance at the highest energies. Here, we discuss the applicability of Pomeron dominance through fits to the most complete setof forward data from ppand ¯ppscattering. We consider an analytic parameterization for σtot(s)consisting of non-degenerated Regge trajectories for even and odd amplitudes (as in the MN analysis) and two Pomeron components associated with double and triple poles in the complex angular momentum plane. The ρparameter is analytically determined by means of dispersion relations. We carry out fits to ppand ¯ppdata on σtotand ρin the interval 5 GeV–13 TeV (as in the MN analysis). Two novel aspects of our analysis are: (1) the dataset comprises all the accelerator data below 7 TeV and we consider three independent ensemblesby adding: either only the TOTEM data (as in the MN analysis), or only the ATLAS data, or both sets; (2) in the data reductions to each ensemble, uncertainty regions are evaluated through error propagation from the fit parameters, with 90% CL. We argument that, within the uncertainties, this analytic model corresponding to soft Pomeron dominance, does not seem to be excluded by the completeset of experimental data presently available. |
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Rocha, Mateus Broilo daLuna, Emerson Gustavo de SouzaMenon, Marcio Jose2018-09-18T02:30:18Z20180370-2693http://hdl.handle.net/10183/182135001073307Recent data from LHC13 by the TOTEM Collaboration on σtotand ρhave indicated disagreement with all the Pomeron model predictions by the COMPETE Collaboration (2002). On the other hand, as recently demonstrated by Martynov and Nicolescu (MN), the new σtotdatum and the unexpected decrease in the ρvalue are well described by the maximal Odderon dominance at the highest energies. Here, we discuss the applicability of Pomeron dominance through fits to the most complete setof forward data from ppand ¯ppscattering. We consider an analytic parameterization for σtot(s)consisting of non-degenerated Regge trajectories for even and odd amplitudes (as in the MN analysis) and two Pomeron components associated with double and triple poles in the complex angular momentum plane. The ρparameter is analytically determined by means of dispersion relations. We carry out fits to ppand ¯ppdata on σtotand ρin the interval 5 GeV–13 TeV (as in the MN analysis). Two novel aspects of our analysis are: (1) the dataset comprises all the accelerator data below 7 TeV and we consider three independent ensemblesby adding: either only the TOTEM data (as in the MN analysis), or only the ATLAS data, or both sets; (2) in the data reductions to each ensemble, uncertainty regions are evaluated through error propagation from the fit parameters, with 90% CL. We argument that, within the uncertainties, this analytic model corresponding to soft Pomeron dominance, does not seem to be excluded by the completeset of experimental data presently available.application/pdfengPhysics letters. B. Amsterdam. Vol. 781 (June 2018), p. 616-620Aceleradores de partículasColisões proton-protonPomeronsAltas energiasHadron-induced high-and super-high-energy interactionsTotal cross-sectionsAsymptotic problems and propertiesSoft pomerons and the forward LHC dataEstrangeiroinfo: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:UFRGSORIGINAL001073307.pdfTexto completo (inglês)application/pdf425482http://www.lume.ufrgs.br/bitstream/10183/182135/1/001073307.pdfb7921d970a55399ce3a92c26dd5cd749MD51TEXT001073307.pdf.txt001073307.pdf.txtExtracted Texttext/plain23714http://www.lume.ufrgs.br/bitstream/10183/182135/2/001073307.pdf.txt88681f13b5112e96e0b7d8b5e564fb27MD52THUMBNAIL001073307.pdf.jpg001073307.pdf.jpgGenerated Thumbnailimage/jpeg2031http://www.lume.ufrgs.br/bitstream/10183/182135/3/001073307.pdf.jpg2278523adcbf7a9ecfa6849dbc2eacb0MD5310183/1821352023-05-21 03:27:33.067844oai:www.lume.ufrgs.br:10183/182135Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-05-21T06:27:33Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Soft pomerons and the forward LHC data |
title |
Soft pomerons and the forward LHC data |
spellingShingle |
Soft pomerons and the forward LHC data Rocha, Mateus Broilo da Aceleradores de partículas Colisões proton-proton Pomerons Altas energias Hadron-induced high-and super-high-energy interactions Total cross-sections Asymptotic problems and properties |
title_short |
Soft pomerons and the forward LHC data |
title_full |
Soft pomerons and the forward LHC data |
title_fullStr |
Soft pomerons and the forward LHC data |
title_full_unstemmed |
Soft pomerons and the forward LHC data |
title_sort |
Soft pomerons and the forward LHC data |
author |
Rocha, Mateus Broilo da |
author_facet |
Rocha, Mateus Broilo da Luna, Emerson Gustavo de Souza Menon, Marcio Jose |
author_role |
author |
author2 |
Luna, Emerson Gustavo de Souza Menon, Marcio Jose |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rocha, Mateus Broilo da Luna, Emerson Gustavo de Souza Menon, Marcio Jose |
dc.subject.por.fl_str_mv |
Aceleradores de partículas Colisões proton-proton Pomerons Altas energias |
topic |
Aceleradores de partículas Colisões proton-proton Pomerons Altas energias Hadron-induced high-and super-high-energy interactions Total cross-sections Asymptotic problems and properties |
dc.subject.eng.fl_str_mv |
Hadron-induced high-and super-high-energy interactions Total cross-sections Asymptotic problems and properties |
description |
Recent data from LHC13 by the TOTEM Collaboration on σtotand ρhave indicated disagreement with all the Pomeron model predictions by the COMPETE Collaboration (2002). On the other hand, as recently demonstrated by Martynov and Nicolescu (MN), the new σtotdatum and the unexpected decrease in the ρvalue are well described by the maximal Odderon dominance at the highest energies. Here, we discuss the applicability of Pomeron dominance through fits to the most complete setof forward data from ppand ¯ppscattering. We consider an analytic parameterization for σtot(s)consisting of non-degenerated Regge trajectories for even and odd amplitudes (as in the MN analysis) and two Pomeron components associated with double and triple poles in the complex angular momentum plane. The ρparameter is analytically determined by means of dispersion relations. We carry out fits to ppand ¯ppdata on σtotand ρin the interval 5 GeV–13 TeV (as in the MN analysis). Two novel aspects of our analysis are: (1) the dataset comprises all the accelerator data below 7 TeV and we consider three independent ensemblesby adding: either only the TOTEM data (as in the MN analysis), or only the ATLAS data, or both sets; (2) in the data reductions to each ensemble, uncertainty regions are evaluated through error propagation from the fit parameters, with 90% CL. We argument that, within the uncertainties, this analytic model corresponding to soft Pomeron dominance, does not seem to be excluded by the completeset of experimental data presently available. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-09-18T02:30:18Z |
dc.date.issued.fl_str_mv |
2018 |
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Estrangeiro info:eu-repo/semantics/article |
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001073307 |
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http://hdl.handle.net/10183/182135 |
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eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 781 (June 2018), p. 616-620 |
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openAccess |
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