Electroweak superpartners scrutinized at the LHC in events with multi-leptons

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dc.contributor.author Lara, Iñaki
dc.contributor.author López-Fogliani, Daniel E.
dc.contributor.author Muñoz, Carlos
dc.contributor.other UAM. Departamento de Física Teórica es_ES
dc.date.accessioned 2019-04-30T10:04:05Z
dc.date.available 2019-04-30T10:04:05Z
dc.date.issued 2019-03-10
dc.identifier.citation Physics Letters B 790 (2019): 176-183 en_US
dc.identifier.issn 1873-2445 (online) en_US
dc.identifier.issn 0370-2693 (print) en_US
dc.identifier.uri http://hdl.handle.net/10486/687379
dc.description.abstract We analyze a multi-lepton signal plus missing transverse energy from neutrinos expected at the LHC for a bino-like neutralino as the lightest supersymmetric particle (LSP), when the left sneutrino is the next-to-LSP and hence a suitable source of binos. The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating (RPV) couplings involving right-handed neutrinos solves the μ problem and can reproduce simultaneously the neutrino data. Left sneutrinos/sleptons are pair-produced at pp collisions decaying to binos, with the latter decaying via RPV to Wℓ or Zν. This signal can be compared with LHC searches for electroweak superpartners through chargino–neutralino production. The reduced cross section of the sneutrino/slepton production in comparison with the one of the latter process, limits the sensitivity of the searches to small sneutrino/slepton masses. Although the resulting compressed spectrum typically evades the aforementioned searches, we show that analyses using recursive jigsaw reconstruction are sensitive to these scenarios. As a by-product, we find that the region of bino masses 110–120 GeV and sneutrino masses 120–140 GeV can give rise to a tri-lepton signal compatible with the local excess recently reported by ATLAS en_US
dc.description.sponsorship The work of IL and CM was supported in part by the Span-ish Agencia Estatal de Investigación through the grants FPA2015-65929-P (MINECO/FEDER, UE) and IFT Centro de Excelencia Severo Ochoa SEV-2016-0597. The work of DL was supported by the Argentinian CONICET, and also acknowledges the support of the Spanish grant FPA2015-65929-P (MINECO/FEDER, UE). The authors acknowledge the support of the Spanish Red Consolider MultiDark FPA2017-90566-REDC en_US
dc.format.extent 8 págs. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier en_US
dc.relation.ispartof Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics en_US
dc.rights © 2019 The Author(s) en_US
dc.subject.other LHC phenomenology en_US
dc.subject.other Supersymmetric standard model en_US
dc.subject.other Supersymmetry phenomenology en_US
dc.title Electroweak superpartners scrutinized at the LHC in events with multi-leptons en_US
dc.type article en_US
dc.subject.eciencia Física es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.physletb.2019.01.010 es_ES
dc.identifier.doi 10.1016/j.physletb.2019.01.010 es_ES
dc.identifier.publicationfirstpage 176 es_ES
dc.identifier.publicationlastpage 183 es_ES
dc.relation.projectID Gobierno de España. FPA2015-65929-P es_ES
dc.relation.projectID Gobierno de España. SEV-2016-0597 es_ES
dc.relation.projectID Gobierno de España. FPA2017-90566-REDC es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.cc Reconocimiento es_ES
dc.rights.accessRights openAccess en
dc.authorUAM Muñoz López, Carlos (259214)

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