Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC
Abstract Within the framework of the $$\mu \nu \mathrm{SSM}$$ μνSSM , a displaced dilepton signal is expected at the LHC from the decay of a tau left sneutrino as the lightest supersymmetric particle (LSP) with a mass in the range 45–100 GeV. We compare the predictions of this scenario with the ATLA...
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doaj-6901c92a2327430bb6b4e5375bb9540a2020-11-25T04:08:24ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-11-01791111810.1140/epjc/s10052-019-7412-1Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHCEssodjolo Kpatcha0Iñaki Lara1Daniel E. López-Fogliani2Carlos Muñoz3Natsumi Nagata4Hidetoshi Otono5Roberto Ruiz de Austri6Departamento de Física Teórica, Universidad Autónoma de Madrid (UAM)Departamento de Física Teórica, Universidad Autónoma de Madrid (UAM)Departamento de Física, Facultad de Ciencia Exactas y Naturales, Instituto de Física de Buenos Aires UBA & CONICET, Universidad de Buenos AiresDepartamento de Física Teórica, Universidad Autónoma de Madrid (UAM)Department of Physics, University of TokyoResearch Center for Advanced Particle Physics, Kyushu UniversityInstituto de Física Corpuscular CSIC-UVAbstract Within the framework of the $$\mu \nu \mathrm{SSM}$$ μνSSM , a displaced dilepton signal is expected at the LHC from the decay of a tau left sneutrino as the lightest supersymmetric particle (LSP) with a mass in the range 45–100 GeV. We compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions, considering an optimization of the trigger requirements by means of a high level trigger that exploits tracker information. The analysis is carried out in the general case of three families of right-handed neutrino superfields, where all the neutrinos get contributions to their masses at tree level. To analyze the parameter space, we sample the $$\mu \nu $$ μν SSM for a tau left sneutrino LSP with proper decay length $$c\tau > 0.1 \, \hbox {mm}$$ cτ>0.1mm using a likelihood data-driven method, and paying special attention to reproduce the current experimental data on neutrino and Higgs physics, as well as flavor observables. The sneutrino is special in the $$\mu \nu \mathrm{SSM}$$ μνSSM since its couplings have to be chosen so that the neutrino oscillation data are reproduced. We find that important regions of the parameter space can be probed at the LHC run 3.http://link.springer.com/article/10.1140/epjc/s10052-019-7412-1 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Essodjolo Kpatcha Iñaki Lara Daniel E. López-Fogliani Carlos Muñoz Natsumi Nagata Hidetoshi Otono Roberto Ruiz de Austri |
spellingShingle |
Essodjolo Kpatcha Iñaki Lara Daniel E. López-Fogliani Carlos Muñoz Natsumi Nagata Hidetoshi Otono Roberto Ruiz de Austri Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC European Physical Journal C: Particles and Fields |
author_facet |
Essodjolo Kpatcha Iñaki Lara Daniel E. López-Fogliani Carlos Muñoz Natsumi Nagata Hidetoshi Otono Roberto Ruiz de Austri |
author_sort |
Essodjolo Kpatcha |
title |
Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC |
title_short |
Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC |
title_full |
Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC |
title_fullStr |
Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC |
title_full_unstemmed |
Sampling the $$\mu \nu $$ μν SSM for displaced decays of the tau left sneutrino LSP at the LHC |
title_sort |
sampling the $$\mu \nu $$ μν ssm for displaced decays of the tau left sneutrino lsp at the lhc |
publisher |
SpringerOpen |
series |
European Physical Journal C: Particles and Fields |
issn |
1434-6044 1434-6052 |
publishDate |
2019-11-01 |
description |
Abstract Within the framework of the $$\mu \nu \mathrm{SSM}$$ μνSSM , a displaced dilepton signal is expected at the LHC from the decay of a tau left sneutrino as the lightest supersymmetric particle (LSP) with a mass in the range 45–100 GeV. We compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions, considering an optimization of the trigger requirements by means of a high level trigger that exploits tracker information. The analysis is carried out in the general case of three families of right-handed neutrino superfields, where all the neutrinos get contributions to their masses at tree level. To analyze the parameter space, we sample the $$\mu \nu $$ μν SSM for a tau left sneutrino LSP with proper decay length $$c\tau > 0.1 \, \hbox {mm}$$ cτ>0.1mm using a likelihood data-driven method, and paying special attention to reproduce the current experimental data on neutrino and Higgs physics, as well as flavor observables. The sneutrino is special in the $$\mu \nu \mathrm{SSM}$$ μνSSM since its couplings have to be chosen so that the neutrino oscillation data are reproduced. We find that important regions of the parameter space can be probed at the LHC run 3. |
url |
http://link.springer.com/article/10.1140/epjc/s10052-019-7412-1 |
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