Sampling the μνSSM for displaced decays of the tau left sneutrino LSP at the LHC
Abstract: Within the framework of theμνSSM, 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 longlived...
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| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2020
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| Materias: | |
| Acceso en línea: | https://repositorio.uca.edu.ar/handle/123456789/9647 |
| Aporte de: |
| Sumario: | Abstract: Within the framework of theμνSSM, 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 longlived 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 μνSSM for a tau left
sneutrino LSP with proper decay length cτ > 0.1 mm 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 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. |
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