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Showing result 16 - 20 of 30 essays matching the above criteria.

1. 16. Signal background interference effects in lepton trident events with a new low mass mediator

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Patricia Andrea Gutiérrez García; [2020]
   Keywords : dark matter; pythia; matrix element corrections; LDM; Dire; Madgraph; dark photons; Physics and Astronomy;

   Abstract : In this project we present a phenomenological study of signal to background interference effects in leptonic tridents produced in parton showers. The interference effects are introduced by linking matrix element corrections of a kinetically mixed dark photon model to the parton shower Dire. READ MORE

3. 17. Imaging Using Machine Learning for the LDMX Electromagnetic Calorimeter

   University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

   Author : Leo Östman; [2020]
   Keywords : Physics and Astronomy;

   Abstract : LDMX is a fixed target experiment designed to search for light dark matter. The experiment will search for dark matter signatures using missing momentum and energy in events with electrons scattering in the target. READ MORE

4. 18. Constraints on the Kaluza-Klein Photon as a Dark Matter Candidate from the IceCube Collaboration Results

   University essay from Uppsala universitet/Högenergifysik

   Author : Miquel Colom i Bernadich; [2019]
   Keywords : dark matter; WIMP; Kaluza-Klein; IceCube; neutrinos; muon neutrinos; muons;

   Abstract : New constraints on the scattering cross sections of the Kaluza Klein photon as a darkmatter candidate, its annihilation rate in the Sun and the resulting muon flux on Earth are derived.For this purpose, data collected in the IceCube Neutrino Observatory during 532 days of exposurein the austral winters between 2011 and 2014 have been analyzed with Poisson confidence intervals (J. READ MORE

5. 19. Signal and background discrimination for two-electron events in LDMX using a Boosted Decision Tree

   University essay from Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

   Author : Jessamy Mol; [2019]
   Keywords : Light Dark Matter Experiment; Boosted Decision Tree; machine learning; Dark Matter; Physics and Astronomy;

   Abstract : The Light Dark Matter Experiment (LDMX) is a fixed target experiment that will search for dark matter, but is still in the development phase. An important aspect for the experiment is the discrimination of signal and background events. READ MORE

6. 20. Event Generators and Light Dark Matter

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Michal Nowak; [2019]
   Keywords : Event Generators; Dark Matter; Particle Kinematics; Particle Scattering; Physics and Astronomy;

   Abstract : Recently, a number of experiments have been proposed with the aim of finding light dark matter. In particular, the proposed LDMX experiment is meant to utilize electron scattering off metal nuclei to excite dark matter emissions. Motivated by this, we construct an event generator for electrons scattering off metal nuclei. READ MORE