Searching for left sneutrino LSP at the LHC

We analyze relevant signals expected at the LHC for a left sneutrino as the lightest supersymmetric particle (LSP). The discussion is carried out in the "μ from V" supersymmetric standard model (μνSSM), where the presence of R-parity breaking couplings involving right-handed neutrinos solv...

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Detalles Bibliográficos
Publicado: 2018
Materias:
supersymmetric Standard Model
Supersymmetry phenomenology
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0217751X_v33_n18-19_p_Ghosh
http://hdl.handle.net/20.500.12110/paper_0217751X_v33_n18-19_p_Ghosh
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0217751X_v33_n18-19_p_Ghosh
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spelling paper:paper_0217751X_v33_n18-19_p_Ghosh2023-06-08T15:21:11Z Searching for left sneutrino LSP at the LHC supersymmetric Standard Model Supersymmetry phenomenology We analyze relevant signals expected at the LHC for a left sneutrino as the lightest supersymmetric particle (LSP). The discussion is carried out in the "μ from V" supersymmetric standard model (μνSSM), where the presence of R-parity breaking couplings involving right-handed neutrinos solves the μ problem and reproduces neutrino data. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel. From the prompt decay of a pair of left sneutrinos LSPs of any family, a significant diphoton signal plus missing transverse energy (MET) from neutrinos can be present in the mass range 118-132 GeV, with 13 TeV center-of-mass energy and an integrated luminosity of 100 fb-1. In addition, in the case of a pair of tau left sneutrinos LSPs, given the large value of the tau Yukawa coupling diphoton plus leptons and/or multileptons can appear. We find that the number of expected events for the multilepton signal, together with properly adopted search strategies, is sufficient to give a significant evidence for a sneutrino of mass in the range 130-310 GeV, even with the integrated luminosity of 20 fb-1. In the case of the signal producing diphoton plus leptons, an integrated luminosity of 100 fb-1 is needed to give a significant evidence in the mass range 95-145 GeV. Finally, we discuss briefly the presence of displaced vertices and the associated range of masses. © 2018 World Scientific Publishing Company. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0217751X_v33_n18-19_p_Ghosh http://hdl.handle.net/20.500.12110/paper_0217751X_v33_n18-19_p_Ghosh
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic supersymmetric Standard Model
Supersymmetry phenomenology
spellingShingle supersymmetric Standard Model
Supersymmetry phenomenology
Searching for left sneutrino LSP at the LHC
topic_facet supersymmetric Standard Model
Supersymmetry phenomenology
description We analyze relevant signals expected at the LHC for a left sneutrino as the lightest supersymmetric particle (LSP). The discussion is carried out in the "μ from V" supersymmetric standard model (μνSSM), where the presence of R-parity breaking couplings involving right-handed neutrinos solves the μ problem and reproduces neutrino data. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel. From the prompt decay of a pair of left sneutrinos LSPs of any family, a significant diphoton signal plus missing transverse energy (MET) from neutrinos can be present in the mass range 118-132 GeV, with 13 TeV center-of-mass energy and an integrated luminosity of 100 fb-1. In addition, in the case of a pair of tau left sneutrinos LSPs, given the large value of the tau Yukawa coupling diphoton plus leptons and/or multileptons can appear. We find that the number of expected events for the multilepton signal, together with properly adopted search strategies, is sufficient to give a significant evidence for a sneutrino of mass in the range 130-310 GeV, even with the integrated luminosity of 20 fb-1. In the case of the signal producing diphoton plus leptons, an integrated luminosity of 100 fb-1 is needed to give a significant evidence in the mass range 95-145 GeV. Finally, we discuss briefly the presence of displaced vertices and the associated range of masses. © 2018 World Scientific Publishing Company.
title Searching for left sneutrino LSP at the LHC
title_short Searching for left sneutrino LSP at the LHC
title_full Searching for left sneutrino LSP at the LHC
title_fullStr Searching for left sneutrino LSP at the LHC
title_full_unstemmed Searching for left sneutrino LSP at the LHC
title_sort searching for left sneutrino lsp at the lhc
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0217751X_v33_n18-19_p_Ghosh
http://hdl.handle.net/20.500.12110/paper_0217751X_v33_n18-19_p_Ghosh
_version_ 1768544363083726848

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