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Record Nr. |
UNISA996418432903316 |
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Autore |
Resseguie Elodie |
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Titolo |
Electroweak physics at the large hadron collider with the atlas detector : standard model measurement, supersymmetry searches, excesses, and upgrade electronics / / Elodie Resseguie |
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Pubbl/distr/stampa |
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Cham, Switzerland : , : Springer, , [2020] |
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©2020 |
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ISBN |
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Edizione |
[1st ed. 2020.] |
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Descrizione fisica |
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1 online resource (XXIII, 322 p. 227 illus., 212 illus. in color.) |
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Collana |
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Disciplina |
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Soggetti |
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Particles (Nuclear physics) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"Doctoral Thesis accepted by University of Pennsylvania, Philadelphia, USA"--Title page. |
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Nota di contenuto |
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Introduction -- Theoretical Framework -- LHC and the ATLAS Detector -- HL-LHC Inner Detector Upgrade -- W±Z Cross-Section Measurement at ps = 13 TeV -- Searches for Electroweak SUSY: Motivation and Models -- Search for wino-bino production decaying via WZ at ps = 13 TeV. |
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Sommario/riassunto |
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This thesis discusses searches for electroweakly produced supersymmetric partners of the gauge and the Higgs bosons (gauginos and higgsinos) decaying to multiple leptons, using pp collisions at sqrt(s) = 13 TeV. The thesis presents an in-depth study of multiple searches, as well as the first 13 TeV cross section measurement for the dominant background in these searches, WZ production. Two searches were performed using 36.1/fb of data: the gaugino search, which makes use of a novel kinematic variable, and the higgsino search, which produced the first higgsino limits at the LHC. A search using 139/fb of data makes use of a new technique developed in this thesis to cross check an excess of data above the background expectation in a search using a Recursive Jigsaw Reconstruction technique. None of the searches showed a significant excess of data, and limits were expanded with respect to previous results. These searches will benefit from the addition of luminosity during HL-LHC; however, the current detector will not be able to withstand the increase in radiation. |
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Electronics for the detector upgrade are tested and irradiated to ensure their performance. |
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