Search for long-lived charginos based on a disappearing-track signature using 136 fb - 1 of pp collisions at √s = 13 TeV with the ATLAS detector

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbed Abud, A.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAbusleme Hoffman, A.C.
dc.contributor.authorAcharya, B.S.
dc.date.accessioned2023-10-19T14:34:59Z
dc.date.available2023-10-19T14:34:59Z
dc.date.issued2022-07
dc.descriptionIndexación: Scopus.es
dc.description.abstractA search for long-lived charginos produced either directly or in the cascade decay of heavy prompt gluino states is presented. The search is based on proton–proton collision data collected at a centre-of-mass energy of s = 13 TeV between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 136 fb- 1. Long-lived charginos are characterised by a distinct signature of a short and then disappearing track, and are reconstructed using at least four measurements in the ATLAS pixel detector, with no subsequent measurements in the silicon-microstrip tracking volume nor any associated energy deposits in the calorimeter. The final state is complemented by a large missing transverse-momentum requirement for triggering purposes and at least one high-transverse-momentum jet. No excess above the expected backgrounds is observed. Exclusion limits are set at 95% confidence level on the masses of the chargino and gluino for different chargino lifetimes. Chargino masses up to 660 (210) GeV are excluded in scenarios where the chargino is a pure wino (higgsino). For charginos produced during the cascade decay of a heavy gluino, gluinos with masses below 2.1 TeV are excluded for a chargino mass of 300 GeV and a lifetime of 0.2 ns.es
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85130534482&origin=resultslist&sort=plf-f&src=s&nlo=&nlr=&nls=&sid=88058168a3d2ed5c0f5801a405727a19&sot=aff&sdt=cl&cluster=scofreetoread%2c%22all%22%2ct&sl=61&s=AF-ID%28%22Universidad+Andr%c3%a9s+Bello%22+60002636%29+AND+SUBJAREA%28ENGI%29&relpos=84&citeCnt=19&searchTerm=
dc.identifier.citationEuropean Physical Journal C Open Access Volume 82, Issue 7July 2022 Article number 606es
dc.identifier.doi10.1140/epjc/s10052-022-10489-5
dc.identifier.issn14346044
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53503
dc.language.isoenes
dc.publisherInstitute for Ionicses
dc.rights.licenseCC BY 4.0 DEED
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBosones
dc.subjectPartonses
dc.subjectHiggs Bosonses
dc.titleSearch for long-lived charginos based on a disappearing-track signature using 136 fb - 1 of pp collisions at √s = 13 TeV with the ATLAS detectores
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Aad-G.-Search-for-longlived-charginos-based-on-a-disappearingtrack-signature-using-136-fb-sup-1sup-of-pp-collisions-at-s-13TeV-with-the-ATLAS-detector.pdf
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