Treatment of threshold effects in supersymmetric 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, Sabine, Porod, Werner
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Particle Physics - Theory
Acceso en línea:http://cds.cern.ch/record/1054715
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author Baer, H
Ferrandis, J
Kraml, Sabine
Porod, Werner
author_facet Baer, H
Ferrandis, J
Kraml, Sabine
Porod, Werner
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 Isajet 7.72 and SPheno 2.2.3, and present the improvements done in Isajet 7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.
id cern-1054715
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-10547152019-09-30T06:29:59Zhttp://cds.cern.ch/record/1054715engBaer, HFerrandis, JKraml, SabinePorod, WernerTreatment of threshold effects in supersymmetric spectrum computationsParticle Physics - PhenomenologyParticle Physics - TheoryWe 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 Isajet 7.72 and SPheno 2.2.3, and present the improvements done in Isajet 7.73. We also comment on theoretical uncertainties. Last but not least, we outline how a consistent multiscale approach may be achieved.oai:cds.cern.ch:10547152006
spellingShingle Particle Physics - Phenomenology
Particle Physics - Theory
Baer, H
Ferrandis, J
Kraml, Sabine
Porod, Werner
Treatment of threshold effects in supersymmetric spectrum computations
title Treatment of threshold effects in supersymmetric spectrum computations
title_full Treatment of threshold effects in supersymmetric spectrum computations
title_fullStr Treatment of threshold effects in supersymmetric spectrum computations
title_full_unstemmed Treatment of threshold effects in supersymmetric spectrum computations
title_short Treatment of threshold effects in supersymmetric spectrum computations
title_sort treatment of threshold effects in supersymmetric spectrum computations
topic Particle Physics - Phenomenology
Particle Physics - Theory
url http://cds.cern.ch/record/1054715
work_keys_str_mv AT baerh treatmentofthresholdeffectsinsupersymmetricspectrumcomputations
AT ferrandisj treatmentofthresholdeffectsinsupersymmetricspectrumcomputations
AT kramlsabine treatmentofthresholdeffectsinsupersymmetricspectrumcomputations
AT porodwerner treatmentofthresholdeffectsinsupersymmetricspectrumcomputations

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