Sökning: "Leo Qiyuan Hu"

Hittade 2 uppsatser innehållade orden Leo Qiyuan Hu.

1. 1. Determining backgrounds with misidentified leptons in the ATLAS Higgs boson analysis

   Master-uppsats, KTH/Fysik

   Författare :Leo Qiyuan Hu; [2023]
   Nyckelord :Particle Physics; ATLAS detector; Fake Factor method; Higgs boson; lepton misreconstruction; misidentified events; Partikelfysik; ATLAS detektorn; Fake Factor-metoden; Higgs boson; lepton felrekonstruktion; felidentifierade händelser;

   Sammanfattning : This thesis presents an analysis of misidentified leptons in the Higgs boson decaychannel H → W W ∗ → lνlν. Misidentified leptons, resulting from jets misidentifiedas leptons, mimic the signal of a Higgs boson decay, resulting in a backgroundcontribution to the signal. LÄS MER

3. 2. Transmission characterization of fiber Bragg gratings arrays for intracavity spectral control of a 1.5 micrometer fiber laser

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Hu Leo Qiyuan; Pontus Jäderholm; [2021]
   Nyckelord :;

   Sammanfattning : This thesis aims to investigate whether a fiber Bragg grating array (FBGA) can be designed to reduce the bandwidth of light from a 1.5 µm fiber laser while the distances between the fiber Bragg gratings are in the 10-20 cm range. LÄS MER