Looking for the left sneutrino LSP with displaced-vertex searches
Abstract: We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range $45$-$100$ GeV. The sneutrinos are pair produced via a virtual $W$, $Z$ or $\gamma$ in the $s$ channel and, given the large value of the t...
Guardado en:
| Autores principales: | , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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American Physical Society
2020
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| Acceso en línea: | https://repositorio.uca.edu.ar/handle/123456789/9511 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 |
| Aporte de: |
| id |
I33-R139123456789-9511 |
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| record_format |
dspace |
| institution |
Universidad Católica Argentina |
| institution_str |
I-33 |
| repository_str |
R-139 |
| collection |
Repositorio Institucional de la Universidad Católica Argentina (UCA) |
| language |
Inglés |
| topic |
PARTICULAS ELEMENTALES FISICA NUCLEAR ENERGIA SNEUTRINOS |
| spellingShingle |
PARTICULAS ELEMENTALES FISICA NUCLEAR ENERGIA SNEUTRINOS Lara, Iñaki López-Fogliani, Daniel E. Muñoz, Carlos Nagata, Natsumi Otono, Hidetoshi Ruiz de Austri, Roberto Looking for the left sneutrino LSP with displaced-vertex searches |
| topic_facet |
PARTICULAS ELEMENTALES FISICA NUCLEAR ENERGIA SNEUTRINOS |
| description |
Abstract: We analyze a displaced dilepton signal expected at the LHC for a tau left
sneutrino as the lightest supersymmetric particle with a mass in the range
$45$-$100$ GeV. The sneutrinos are pair produced via a virtual $W$, $Z$ or
$\gamma$ in the $s$ channel and, given the large value of the tau Yukawa
coupling, their decays into two dileptons or a dilepton plus missing transverse
energy from neutrinos can be significant. The discussion is carried out in the
$\mu \nu$SSM, where the presence of $R$-parity violating couplings involving
right-handed neutrinos solves the $\mu$ problem and can reproduce the neutrino
data. To probe the tau left sneutrinos we compare the predictions of the $\mu
\nu$SSM with the ATLAS search for long-lived particles using displaced lepton
pairs in $pp$ collisions at $\sqrt s= 8$ TeV, allowing us to constrain the
parameter space of the model. We also consider an optimization of the trigger
requirements used in existing displaced-vertex searches by means of a High
Level Trigger that exploits tracker information. This optimization is
generically useful for a light metastable particle decaying into soft charged
leptons. The constraints on the sneutrino turn out to be more stringent. We
finally discuss the prospects for the $13$ TeV LHC searches as well as further
potential optimizations. |
| format |
Artículo |
| author |
Lara, Iñaki López-Fogliani, Daniel E. Muñoz, Carlos Nagata, Natsumi Otono, Hidetoshi Ruiz de Austri, Roberto |
| author_facet |
Lara, Iñaki López-Fogliani, Daniel E. Muñoz, Carlos Nagata, Natsumi Otono, Hidetoshi Ruiz de Austri, Roberto |
| author_sort |
Lara, Iñaki |
| title |
Looking for the left sneutrino LSP with displaced-vertex searches |
| title_short |
Looking for the left sneutrino LSP with displaced-vertex searches |
| title_full |
Looking for the left sneutrino LSP with displaced-vertex searches |
| title_fullStr |
Looking for the left sneutrino LSP with displaced-vertex searches |
| title_full_unstemmed |
Looking for the left sneutrino LSP with displaced-vertex searches |
| title_sort |
looking for the left sneutrino lsp with displaced-vertex searches |
| publisher |
American Physical Society |
| publishDate |
2020 |
| url |
https://repositorio.uca.edu.ar/handle/123456789/9511 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 http://arxiv.org/abs/1804.00067v2 |
| work_keys_str_mv |
AT larainaki lookingfortheleftsneutrinolspwithdisplacedvertexsearches AT lopezfoglianidaniele lookingfortheleftsneutrinolspwithdisplacedvertexsearches AT munozcarlos lookingfortheleftsneutrinolspwithdisplacedvertexsearches AT nagatanatsumi lookingfortheleftsneutrinolspwithdisplacedvertexsearches AT otonohidetoshi lookingfortheleftsneutrinolspwithdisplacedvertexsearches AT ruizdeaustriroberto lookingfortheleftsneutrinolspwithdisplacedvertexsearches |
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Repositorios |
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1764820528160309249 |