| Thesis | |
| Report number | CERN-THESIS-2023-426 |
| Title | Validating Sherpa for New Physics Simulations in Diboson Processes |
| Author(s) | Buhring, Maren (Technische Universitaet Dresden (DE)) |
| Publication | 76. |
| Thesis note | Master : Technische Universitaet Dresden : 2023-12-07 |
| Thesis supervisor(s) | Siegert, Frank |
| Note | Presented 2023 |
| Subject category | Particle Physics - Experiment ; Particle Physics - Theory |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Abstract | The Monte Carlo event generator Sherpa enables the simulation of high-energy particle collisions, like the ones recorded by the ATLAS detector at the Large Hadron Collider (LHC). The simulations allow comparisons between the experimental data and a theoretical expectation. One of Sherpa’s features is its compatibility with models formulated in the Universal FeynRules Output (UFO) format. These UFO models enable simulations based on physics beyond the Standard Model (SM) of particle physics. This thesis performs validation tests for two seperate UFO models: The SMEFTsim model is tested in the context of a Vector Boson Scattering process, and the HHVBF_UFO model is tested using a process involving a triple Higgs coupling. The tests are based on consistency within Sherpa, as well as comparisons with events generated with the MadGraph5_aMC@NLO event generator. While the validation results for the SMEFTsim model show good agreement with only one exception, the results for the HHVBF_UFO validation show discrepancies that need to be investigated further to rule out a possible inconsistency in Sherpa’s handling of the UFO model. |
Email contact: maren.buhring@cern.ch
Journalen skapades 2024-11-25, och modifierades senast 2024-11-27