Sökning: "LHC"

Visar resultat 16 - 20 av 138 avhandlingar innehållade ordet LHC.

1. 16. Charged Higgs Bosons at the ATLAS Experiment and Beyond

   Författare :Elias Coniavitis; Richard Brenner; Tord Ekelöf; Johan Rathsman; Marco Battaglia; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; particle physics; Standard Model; beyond the Standard Model; supersymmetry; MSSM; Higgs physics; charged Higgs boson; LHC; ATLAS; ATLAS Semi-Conductor Tracker; SCT; tau lepton; Lorentz angle; CLIC; Elementary particle physics; Elementarpartikelfysik; High Energy Physics; Högenergifysik;

   Sammanfattning : In the ATLAS experiment at the Large Hadron Collider (LHC) at CERN, direct searches for the elusive Higgs boson will be conducted, as well as for physics beyond the Standard Model. The charged Higgs boson (H±) is interesting both as a part of the Higgs sector, and as a clear sign of new physics. LÄS MER

3. 17. Search for beyond Standard Model physics with same-sign dileptons

   Författare :Anthony Hawkins; Partikel- och kärnfysik; ATLAS Collaboration; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Doubly Charge Higgs; Beyond Standard Model; LHC; ATLAS; TRT; Same-sign leptons; Fysicumarkivet A:2014:Hawkins;

   Sammanfattning : An introduction into the theory and experimental background of particle physics and the ATLAS detector is given. The transition radiation tracker (TRT) which is vital to the particle tracking and identification is then described giving particular creedence to the calibration. The automation of this calibration is explained. LÄS MER

4. 18. Search for Charginos and Sleptons in ATLAS and Identification of Pile-up with the Tile Calorimeter

   Författare :Pawel Klimek; Christophe Clément; Jan Conrad; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LHC; ATLAS; TileCal; Supersymmetry; Quality Factor; fysik; Physics;

   Sammanfattning : The Large Hadron Collider (LHC) located at the European Organization for Nuclear Research (CERN) is the most powerful particle accelerator in the world in terms of collision energy and luminosity. This thesis presents a search for supersymmetric particles in proton-proton collision data recorded by the ATLAS experiment. LÄS MER

5. 19. Searches for dark matter in association with top quarks with the ATLAS experiment

   Författare :Patrawan Pasuwan; Sara Strandberg; Christophe Clément; Steven Lowette; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LHC; ATLAS; luminosity; track counting; dark matter; BSM; Physics; fysik;

   Sammanfattning : This thesis presents a search for dark matter with the ATLAS experiment using 139 fb−1 of pp collision data at √s = 13 TeV delivered by the LHC from 2015 to 2018. The search targets a simplified model where a spin-0 scalar or pseudoscalar mediator particle, decaying to a pair of dark matter particles, is produced in association with a pair of top quarks. LÄS MER

7. 20. Search for Dark Matter and Extra Dimensions in Monojet Final States with the ATLAS Experiment

   Författare :Olof Lundberg; Christophe Clement; Chad Finley; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dark Matter; LHC; ATLAS; Extra Dimension; Gravity; Calorimeter; High Energy Physics; högenergifysik;

   Sammanfattning : The CERN Large Hadron Collider (LHC) is the most powerful particle ac- celerator ever built, in terms of luminosity and center-of-mass energy of the collisions. This thesis presents a search for Dark Matter and Extra Dimen- sions in the proton-proton collisions as recorded by the ATLAS detector. LÄS MER