# CERN Accelerating science

The theses collection aims to cover as well as possible all theses in particle physics and its related fields.
The collection starts with the thesis of Feynman, defended in 1942, and covers now alltogether more than 3000 theses. Most of the documents are held as hard copies, theses from later years are available electronically. (Note also that many theses are not physically held by the CERN Library.)

# Theses

2021-09-12
20:13
 A measurement of top quark production at √s = 13TeV with LHCb data / Mead, James Vincent The LHCb experiment provides unique detector coverage of the highest energy proton-proton interactions ever produced [...] CERN-THESIS-2021-130 - 202 p.

2021-09-10
22:56
 A Search for Exotic Higgs Decays or: How I Learned to Stop Worrying and Love Long-lived Particles" / Burzynski, Jackson Carl A novel search for exotic decays of the Higgs boson to pairs of long-lived neutral particles, each decaying to a bottom quark pair, is performed using 139~fb$^{-1}$ of $\sqrt{s} = 13$~TeV proton-proton collision data collected with the ATLAS detector at the LHC [...] CERN-THESIS-2021-129 - 264 p.

2021-09-10
18:58
 A Search for Heavy Resonances Decaying to $$HH \to b\bar{b}b\bar{b}$$ with the ATLAS Detector / Emerman, Alex \hspace{10mm}A search for Higgs boson pairs produced in the decay of high mass exotic resonances is presented [...] CERN-THESIS-2021-128 - 118 p.

2021-09-10
18:54
 Integration of a Tape Roll for Decay Spectroscopy to Control the Build-Up of Background Radioactivity / Khan, Muhammad Minhaj This internship aims to minimize background radioactivity by devising a new design for the decay chamber of a decay spectroscopy station (DSS) [...] CERN-THESIS-2021-127 - 52 p.

2021-09-10
13:44
 Characterization of RPC detectors operated with new eco friendly gas mixtures / Magatti, Demetrio Resistive plate Chambers (RPCs) are gaseous particle detectors widely used at CERN LHC experiments thanks to their excellent time resolution and production cost [...] CERN-THESIS-2021-126 - 74 p.

2021-09-10
12:15
 From top antitop production cross section measurements to the top-quark pole mass extraction and the MicroMegas upgrade project for the ATLAS experiment / Martinelli, Luca This thesis is focused on two main arguments [...] CERN-THESIS-2021-125 - 309 p.

2021-09-07
17:42
 First observation of decay mode ${\Xi_{cc}^{++}\to\Xi_{c}^{+}\pi^{+}}$ and study $Z$ boson polarisation at the LHCb experiment / Xu, Menglin The Large Hadron Collider (LHC) is the most powerful and energetic particle accelerator in the world [...] CERN-THESIS-2021-124 - 317 p.

2021-09-07
14:22
 Searches for New Physics in final states containing leptons, b-jets and MET at the ATLAS detector / Sullivan, Matthew James This Thesis documents analyses targeting BSM processes in final states containing leptons, $b$-jets and missing transverse energy at the ATLAS detector, as well as studies relevant for the high luminosity upgrade of ATLAS [...] CERN-THESIS-2020-364 -

2021-09-07
05:46
 Analysis of Beauty Quark Hadronization in Vacuum and Quark-Gluon Plasma with CMS / Shi, Zhaozhong An analysis of fully reconstructed $B^0_s$ and $B^+$ mesons decay into $J/\psi$ and strange hadrons using Compact Muon Solenoid (CMS) Experiment 2017 pp dataset and 2018 PbPb data at the center of mass energy per nucleon $\sqrt{s_{NN}} = 5.02$ TeV at the Large Hadron Collider (LHC) is presented [...] CERN-THESIS-2021-123 - 294 p.

2021-09-03
14:57
 Development of silicon pixel sensors for the High Luminosity upgrade of the CMS experiment at LHC and search for Higgs boson pair production in the $b\bar b \tau^+\tau^-$ final state at $\sqrt{s}$ = 13 TeV / Zuolo, Davide My research activity during the PhD has focused mainly on the development of new silicon pixel sensors for the upgrade of the CMS experiment inner tracker in view of the CERN LHC High Luminosity phase (HL-LHC), an activity I started to work on during my master thesis [...] CERN-THESIS-2021-122 - 208 p.