τ̃ searches at future e+e− colliders

The direct pair-production of the superpartner of the τ-lepton, the τ̃, is one of the most interesting channels to search for SUSY in: the τ̃ is likely to be the lightest of the scalar leptons, and is one of the most experimentally chalanging ones. The current model-independent τ̃ limits come from L...

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Main Authors: Berggren Mikael, Núñez Pardo de Vera Maria Teresa, List Jenny
Format: Article
Language:English
Published: EDP Sciences 2024-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01030.pdf
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author Berggren Mikael
Núñez Pardo de Vera Maria Teresa
List Jenny
author_facet Berggren Mikael
Núñez Pardo de Vera Maria Teresa
List Jenny
author_sort Berggren Mikael
collection DOAJ
description The direct pair-production of the superpartner of the τ-lepton, the τ̃, is one of the most interesting channels to search for SUSY in: the τ̃ is likely to be the lightest of the scalar leptons, and is one of the most experimentally chalanging ones. The current model-independent τ̃ limits come from LEP, while limits obtained at the LHC do extend to higher masses, but are model-dependent. The future Higgs factories will be powerful facilities for SUSY searches, offering advantages with respect to previous electron-positron colliders as well as to hadron machines. In order to quantify the capabilities of these future e+e− colliders, the “worst-case” scenario for τ̃ exclusion/discovery has been studied, taking into account the effect of the τ̃ mixing on τ̃ production cross-section and detection efficiency. To evaluate the latter, the ILD concept, originally developed for the International Linear Collider (ILC), and the ILC beam conditions at a centre-of-mass energy of 500 GeV have been used for detailed simulations. The obtained exclusion and discovery reaches extend to only a few GeV below the kinematic limit even in the worst-case scenario. The results of the detailed simulation study are then discussed in view of the experimental environment of other proposed Higgs factory projects.
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institution Kabale University
issn 2100-014X
language English
publishDate 2024-01-01
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spelling doaj-art-17ae993f54fb453593661a96e1e4a74c2025-01-06T11:33:47ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013150103010.1051/epjconf/202431501030epjconf_lcws2024_01030τ̃ searches at future e+e− collidersBerggren Mikael0Núñez Pardo de Vera Maria Teresa1List Jenny2Deutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYDeutsches Elektronen-Synchrotron DESYThe direct pair-production of the superpartner of the τ-lepton, the τ̃, is one of the most interesting channels to search for SUSY in: the τ̃ is likely to be the lightest of the scalar leptons, and is one of the most experimentally chalanging ones. The current model-independent τ̃ limits come from LEP, while limits obtained at the LHC do extend to higher masses, but are model-dependent. The future Higgs factories will be powerful facilities for SUSY searches, offering advantages with respect to previous electron-positron colliders as well as to hadron machines. In order to quantify the capabilities of these future e+e− colliders, the “worst-case” scenario for τ̃ exclusion/discovery has been studied, taking into account the effect of the τ̃ mixing on τ̃ production cross-section and detection efficiency. To evaluate the latter, the ILD concept, originally developed for the International Linear Collider (ILC), and the ILC beam conditions at a centre-of-mass energy of 500 GeV have been used for detailed simulations. The obtained exclusion and discovery reaches extend to only a few GeV below the kinematic limit even in the worst-case scenario. The results of the detailed simulation study are then discussed in view of the experimental environment of other proposed Higgs factory projects.https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01030.pdf
spellingShingle Berggren Mikael
Núñez Pardo de Vera Maria Teresa
List Jenny
τ̃ searches at future e+e− colliders
EPJ Web of Conferences
title τ̃ searches at future e+e− colliders
title_full τ̃ searches at future e+e− colliders
title_fullStr τ̃ searches at future e+e− colliders
title_full_unstemmed τ̃ searches at future e+e− colliders
title_short τ̃ searches at future e+e− colliders
title_sort τ̃ searches at future e e colliders
url https://www.epj-conferences.org/articles/epjconf/pdf/2024/25/epjconf_lcws2024_01030.pdf
work_keys_str_mv AT berggrenmikael tsearchesatfutureeecolliders
AT nunezpardodeveramariateresa tsearchesatfutureeecolliders
AT listjenny tsearchesatfutureeecolliders