CERN Theses

2021-11-29
13:33
 Search for Non-Resonant Higgs Boson Pair Production in the Four Bottom Quark Decay Channel with the CMS Experiment / Guerrero Ibarra, Daniel Fernando This dissertation presents a search for non-resonant Higgs boson pair production, focusing on the four bottom quark decay channel [...] CMS-TS-2021-025 ; CERN-THESIS-2021-218. - 2021. - 215 p.

2021-11-29
13:33
 Measurements of the associated $VH$ production cross section in the $H$ $\to$ $\gamma$$\gamma$ channel at $\sqrt{s}$ = 13 TeV in the CMS experiment / Li, You-ying Measurements of the associated VH production cross section with the Higgs boson decaying to a pair of photons are revealed [...] CMS-TS-2021-026 ; CERN-THESIS-2021-217. - 2021. - 187 p.

2021-11-26
16:31
 Measurement of the CP violating weak phase $\phi_s$ in the $\mathrm{B}^0_\mathrm{s}\to\mathrm{J}/\psi\phi \to \mu^{+}\mu^{-}\mathrm{K^+K^-}$ decay process using the data collected by CMS in proton-proton collision at $\sqrt{s} = 13\,\text{TeV}$ / Muhammad, Alibordi The invariance of the decay rate ( the amplitude square) of a decay process $|\mathcal{M}|^2(|{\psi_1}\rangle\to |{\psi_2}\rangle)$ under the simultaneous operation of discrete symmetry operators such as charge conjugation ($\hat{C}$), and parity ($\hat{P}$) is defined as the CP-symmetry i.e., $[...] CERN-THESIS-2021-213 CMS-DN-20-026. - 2021-11-26 09:50  Measurement of the ttgamma cross section and effective field theory interpretation with the CMS experiment / Lechner, Lukas The standard model (SM) of particle physics, a theory of the currently known elementary particles and their fundamental interactions, provides predictions in agreement with experimental results up to the highest achievable precision [...] CERN-THESIS-2021-212 - 173 p. 2021-11-25 15:30  Estimation of the electron charge misidentification background for the same-sign$WW$measurement with the ATLAS detector at$\sqrt{s}=$13 TeV / Fernandez Pretel, Jose Antonio Electron charge misidentification was the largest source of background in the$ee$decay channel, and the third-largest background source in the all-inclusive leptonic$\ell\ell$channel in the ATLAS measurement of electroweak production of same-sign$ W \$ boson pairs in proton-proton collisions, ma [...] CERN-THESIS-2020-394 - Freiburg im Breisgau : Albert-Ludwigs University of Freiburg, 2020-03-16. - 129 p.

2021-11-25
13:00
 Charakterisierung von Prototypen der 2S-Module für das CMS Phase-2 Upgrade mit einem Röntgenteststand / Thurn, Felix CMS-TS-2021-002 ; CERN-THESIS-2020-393. - 2020. - 72 p.

2021-11-25
13:00
 Characterization of Power Hybrids for the Phase-2 Upgrade of the CMS Detector / Falter, Christine CMS-TS-2021-001 ; CERN-THESIS-2020-392. - 2020. - 72 p.

2021-11-25
12:20
 Search for New Bosons in Gluon-Gluon and Vector Boson Fusion Processes at the LHC and Development of Silicon Module Assembly Techniques for the CMS High Granularity Calorimeter / Lamichhane, Kamal A search for heavy resonances decaying to a pair of vectors bosons is presented which utilizes events in which a hadronically decaying Z or W boson is identified using jet substructure techniques and large missing transverse momentum is found [...] CERN-THESIS-2020-391 CMS-TS-2021-003. - 2020. - 111 p.

2021-11-25
12:06
 Search for New Bosons in Gluon-Gluon and Vector Boson Fusion Processes at the LHC and Development of Silicon Module Assembly Techniques for the CMS High Granularity Calorimeter / Lamichhane, Kamal vii CERN-THESIS-? CMS-TS-2021-003. - 2020. - 111 p.

2021-11-25
10:22
 Deep Learning Methods Applied to Higgs Physics at the LHC / Strong, Giles Chatham The impact that machine learning (ML) has had on research in high-energy physics (HEP) is undeniable; the use of ML-based classifiers in many analyses is now the norm, and they have a long history of being used within reconstruction algorithms (e.g [...] CMS-TS-2021-024 ; CERN-THESIS-2021-211. - 2021. - 357 p.