Mono-$b$ events from single stop production at the HL-LHC and HE-LHC

Top-squarks (stop) play an important role in SUSY naturalness. The stop pair production is considered as the most effective way to search for stop at the LHC. However, the collider signature of stop pair production is usually characterized by tt¯ plus missing transverse energy, which is also predict...

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Detalles Bibliográficos
Autores principales: Tang, Tian-Peng, Liu, Ning, Zhou, Hang
Lenguaje:eng
Publicado: 2019
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2020.115046
http://cds.cern.ch/record/2723964
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author Tang, Tian-Peng
Liu, Ning
Zhou, Hang
author_facet Tang, Tian-Peng
Liu, Ning
Zhou, Hang
author_sort Tang, Tian-Peng
collection CERN
description Top-squarks (stop) play an important role in SUSY naturalness. The stop pair production is considered as the most effective way to search for stop at the LHC. However, the collider signature of stop pair production is usually characterized by tt¯ plus missing transverse energy, which is also predicted in many other non-supersymmetric models. On the other hand, the single stop production via the electroweak interaction can provide some distinctive signatures, and thus will help to confirm the existence of the stop. In this paper, we investigate the observability of the mono- b events from the single stop production process pp→t˜1χ˜1−→b+E̸T in a simplified MSSM framework where the higgsinos and stops are the only sparticles at the HL-LHC and HE-LHC. We find that the stop mass and the higgsino mass may be probed up to about 1.6 TeV and 550 GeV at 5 σ level at the HE-LHC with the integrated luminosity L=15ab−1 . We also present the 2 σ exclusion limits of the stop mass at the HL-LHC and HE-LHC.
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spelling cern-27239642023-03-12T04:56:35Zdoi:10.1016/j.nuclphysb.2020.115046doi:10.1016/j.nuclphysb.2020.115046http://cds.cern.ch/record/2723964engTang, Tian-PengLiu, NingZhou, HangMono-$b$ events from single stop production at the HL-LHC and HE-LHChep-phParticle Physics - PhenomenologyTop-squarks (stop) play an important role in SUSY naturalness. The stop pair production is considered as the most effective way to search for stop at the LHC. However, the collider signature of stop pair production is usually characterized by tt¯ plus missing transverse energy, which is also predicted in many other non-supersymmetric models. On the other hand, the single stop production via the electroweak interaction can provide some distinctive signatures, and thus will help to confirm the existence of the stop. In this paper, we investigate the observability of the mono- b events from the single stop production process pp→t˜1χ˜1−→b+E̸T in a simplified MSSM framework where the higgsinos and stops are the only sparticles at the HL-LHC and HE-LHC. We find that the stop mass and the higgsino mass may be probed up to about 1.6 TeV and 550 GeV at 5 σ level at the HE-LHC with the integrated luminosity L=15ab−1 . We also present the 2 σ exclusion limits of the stop mass at the HL-LHC and HE-LHC.Top-squarks (stop) play an important role in SUSY naturalness. The stop pair production is considered as the most effective way to search for stop at the LHC. However, the collider signature of stop pair production is usually characterized by $t\bar{t}$ plus missing transverse energy, which is also predicted in many other non-supersymmetric models. On the other hand, the single stop production via the electroweak interaction can provide some distinctive signatures, and thus will help to confirm the existence of the stop. In this paper, we investigate the observability of the mono-$b$ events from the single stop production process $pp \to \tilde t_1 \tilde{\chi}^-_1 \to b+ E\!\!\!\!/_T$ in a simplified MSSM framework where the higgsinos and stops are the only sparticles at the HL-LHC and HE-LHC. We find that the stop mass and the higgsino mass may be probed up to about 1.6 TeV and 550 GeV at $5\sigma$ level at the HE-LHC with the integrated luminosity ${\cal L} = 15~\text{ab}^{-1}$. We also present the $2\sigma$ exclusion limits of the stop mass at the HL-LHC and HE-LHC.arXiv:1909.02325oai:cds.cern.ch:27239642019-09-05
spellingShingle hep-ph
Particle Physics - Phenomenology
Tang, Tian-Peng
Liu, Ning
Zhou, Hang
Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title_full Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title_fullStr Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title_full_unstemmed Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title_short Mono-$b$ events from single stop production at the HL-LHC and HE-LHC
title_sort mono-$b$ events from single stop production at the hl-lhc and he-lhc
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysb.2020.115046
https://dx.doi.org/10.1016/j.nuclphysb.2020.115046
http://cds.cern.ch/record/2723964
work_keys_str_mv AT tangtianpeng monobeventsfromsinglestopproductionatthehllhcandhelhc
AT liuning monobeventsfromsinglestopproductionatthehllhcandhelhc
AT zhouhang monobeventsfromsinglestopproductionatthehllhcandhelhc

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