Sökning: "jet substructure"

Hittade 2 uppsatser innehållade orden jet substructure.

1. 1. Searching for Dark Photons with Jet

   Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Författare :Ashar Ahmed Kamal; [2020]
   Nyckelord :light dark matter; jet substructure; Physics and Astronomy;

   Sammanfattning : Dark matter is the greatest mystery of modern particle physics and cosmology. Although an overwhelming amount of observational cosmological evidence has pointed towards a dark sector, only its gravitational effect has been experimentally confirmed. LÄS MER

3. 2. Search for High-Mass Dijet Resonances Decaying into Top Quark Pairs using Machine Learning Techniques in the ATLAS Experiment

   Master-uppsats, Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen

   Författare :Stefio Yosse Andrean; [2018]
   Nyckelord :ATLAS; LHC; jet; dijet; resonance; top; machine learning; BDT; DNN; topocluster; Physics and Astronomy;

   Sammanfattning : This thesis presents an application of machine learning techniques in a search for a high-mass resonance particle decaying into top quark pairs in high energy dijet events using the ATLAS experiment at the Large Hadron Collider. Top tagging is applied to the dijet events to select the events with top signature and suppress the background, increasing the sensitivity of the search. LÄS MER