On the treatment of threshold effects in SUSY spectrum computations

We take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implement...

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Detalles Bibliográficos
Autores principales: Baer, H., Ferrandis, J., Kraml, S., Porod, W.
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.73.015010
http://cds.cern.ch/record/906004
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author Baer, H.
Ferrandis, J.
Kraml, S.
Porod, W.
author_facet Baer, H.
Ferrandis, J.
Kraml, S.
Porod, W.
author_sort Baer, H.
collection CERN
description We take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implementations in public spectrum codes, together with suggestions for improvements. In concrete examples, we compare results of Isajet7.72 and Spheno2.2.3, and present the improvements done in Isajet7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
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spelling cern-9060042023-03-14T20:28:00Zdoi:10.1103/PhysRevD.73.015010http://cds.cern.ch/record/906004engBaer, H.Ferrandis, J.Kraml, S.Porod, W.On the treatment of threshold effects in SUSY spectrum computationsParticle Physics - PhenomenologyWe take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implementations in public spectrum codes, together with suggestions for improvements. In concrete examples, we compare results of Isajet7.72 and Spheno2.2.3, and present the improvements done in Isajet7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.We take a critical view of the treatment of threshold effects in SUSY spectrum computations from high-scale input. We discuss the two principal methods of (a) renormalization at a common SUSY scale versus (b) integrating out sparticles at their own mass scales. We point out problems in the implementations in public spectrum codes, together with suggestions for improvements. In concrete examples, we compare results of Isajet7.72 and Spheno2.2.3, and present the improvements done in Isajet7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.hep-ph/0511123CERN-PH-TH-2005-217FSU-HEP-051107IFIC-05-57LBNL-59093ZU-TH-20-05ZU-TH --20-05CERN-PH-TH-2005-217FSU-HEP-2005-1107IFIC-2005-57LBNL-59093oai:cds.cern.ch:9060042005-11-10
spellingShingle Particle Physics - Phenomenology
Baer, H.
Ferrandis, J.
Kraml, S.
Porod, W.
On the treatment of threshold effects in SUSY spectrum computations
title On the treatment of threshold effects in SUSY spectrum computations
title_full On the treatment of threshold effects in SUSY spectrum computations
title_fullStr On the treatment of threshold effects in SUSY spectrum computations
title_full_unstemmed On the treatment of threshold effects in SUSY spectrum computations
title_short On the treatment of threshold effects in SUSY spectrum computations
title_sort on the treatment of threshold effects in susy spectrum computations
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.73.015010
http://cds.cern.ch/record/906004
work_keys_str_mv AT baerh onthetreatmentofthresholdeffectsinsusyspectrumcomputations
AT ferrandisj onthetreatmentofthresholdeffectsinsusyspectrumcomputations
AT kramls onthetreatmentofthresholdeffectsinsusyspectrumcomputations
AT porodw onthetreatmentofthresholdeffectsinsusyspectrumcomputations

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