Sökning: "Collider constraints"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Collider constraints.

1. 1. Phenomenology of Higgs Bosons Beyond the Standard Model

   Författare :Glenn Wouda; Rikard Enberg; Gunnar Ingelman; Johan Rathsman; Rui Santos; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Particle physics; The Standard Model; Higgs bosons; Higgs mechanism; Beyond the Standard Model; Two Higgs Doublet Models; Charged Higgs boson; Higgs decays; Supersymmetry; Renormalization; LHC; Collider constraints; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

   Sammanfattning : After a long history of searches, a Higgs boson H was discovered by the ATLAS and the CMS experiments at the Large Hadron Collider (LHC) in 2012. Its properties fit well the ones predicted by the Standard Model (SM) of particle physics. However, the SM can not explain other established properties of Nature, such as the existence of Dark Matter. LÄS MER

3. 2. Searches for exotic stable massive particles with the ATLAS experiment

   Författare :Christian Ohm; David Milstead; Torbjörn Moa; Albert Roeck; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ATLAS; ATLAS experiment; supersymmetry; squark; gluino; stable massive particles; long-lived particles; physics analysis; search analysis; LHC; Large Hadron Collider; fysik; Physics;

   Sammanfattning : This thesis presents two signature-based searches for exotic long-lived particles using experimental data collected by the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. At the LHC, proton-proton collisions take place at the world-record center-of-mass energy of 7 TeV and luminosities of up to  3×1033 cm-2s-1 . LÄS MER

4. 3. Searches for New Physics Using Innovative Data Acquisition, Analysis, and Compression Techniques

   Författare :Alexander Ekman; Partikel- och kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Particle Physics; Large Hadron collider LHC; ATLAS; Automation; Calibration; Analysis; Dark Matter; Machine Learning ML ; Artificial Intelligence AI ; Data Compression; Open-source;

   Sammanfattning : The high event rate delivered by the Large Hadron Collider (LHC) provides experiments with opportunities for new discoveries as well as challenges related to the large amounts of data recorded. Overcoming this requires innovative techniques in the three topics of this thesis: Data acquisition, data analysis, and data compression. LÄS MER

5. 4. Optics Corrections and Stabilization Methods for Particle Accelerators

   Författare :Tobias Persson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LHC; accelerators; beam optics; ; feedback; CTF3; optics correction; CLIC;

   Sammanfattning : The discovery of a Higgs-like particle is the result of excellent performance ofboth the LHC (Large Hadron Collider) and its detectors. A significant partof the success can be attributed to the excellent control of the optics in theaccelerator. In this thesis the methods used to correct the optics functions arepresented. LÄS MER

7. 5. Beam-Based Error Identification and Correction Methods for Particle Accelerators

   Författare :Tobias Persson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Emittance; Accelerator Optics; LHC; Pulse Compressor; Feedback; Two-beam acceleration; Accelerators; CLIC; Radio Frequency; CTF3;

   Sammanfattning : Modern particle accelerators have tight tolerances on the acceptable deviation from their desired machine parameters. The control of the parameters is of crucial importance for safe machine operation and performance. This thesisfocuses on beam-based methods and algorithms to identify and correct errors in particle accelerators. LÄS MER