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CERN Theses

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2023-11-29
16:20
Precision measurement of the Higgs boson production cross sections and couplings in the WW decay channel with the CMS experiment at the LHC using the Run II data set / Seidita, Roberto
The discovery of the Higgs boson in 2012 by the ATLAS and CMS collaborations at the CERN LHC accelerator marked the final experimental confirmation of the Standard Model (SM) of particle physics, the theory that encodes our best understanding of fundamental particles and their interactions [...]
CERN-THESIS-2023-263 - 154 p.


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2023-11-28
15:55
Studies of B$_{(s)}^{0}$ -> $\mu$$^{+}$$\mu$$^{-}$ with CMS experiment at LHC / Kar, Chandiprasad
CERN-THESIS-2023-267 CMS-TS-2023-026. - 2023. - 256 p.


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2023-11-28
15:55
Search for long-lived particles decaying into displaced dilepton vertices in proton-proton collisions at $\mathbf{\sqrt{s} = 13}$ TeV with the CMS detector / Fernandez Madrazo, Celia
Some of the most popular extensions of the Standard Model of Particle Physics contain long-lived particles, which can be framed in a wide variety of theories,covering different regions of the phase space [...]
CERN-THESIS-2023-266 CMS-TS-2023-025. - 2023. - 235 p.


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2023-11-27
15:45
Search for high mass resonances with multi-lepton channels and study of timing performance of the CMS High Granularity Calorimeter / Buchot Perraguin, Axel Newton
This thesis takes place at a critical moment when all the data collected by the CMS experiment during the LHC Run-2 are available and when the new generation of detectors aiming to probe even further our knowledge of physics are being developed [...]
CERN-THESIS-2023-257 - 298 p.


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2023-11-27
15:27
Differential ratio measurements of $\mathrm{t\bar{t}\gamma}$/$\mathrm{t\bar{t}}$ and a search for exclusive $\mathrm{t\bar{t}}$ with the CMS experiment / Ribeiro Lopes, Beatriz
In this thesis, measurements performed using proton-proton collision data at $\sqrt{s} = 13~$TeV collected by the CMS experiment at the CERN LHC, in the years 2016, 2017, and 2018, are presented [...]
CERN-THESIS-2023-256 - 207 p.


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2023-11-27
10:54
Studies of Bs->mumu decays with the CMS experiment at LHC
The fundamental constituents of matter and the laws of physics that govern the universe are well explained by the theory known as the Standard Model (SM) of particle physics [...]
CERN-THESIS-2022-392 - 256 p.


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2023-11-26
01:16
Search for long-lived particles decaying into displaced dilepton vertices in proton-proton collisions at $\mathbf{\sqrt{s} = 13}$ TeV with the CMS detector / Fernandez Madrazo, Celia
Some of the most popular extensions of the Standard Model of Particle Physics contain long-lived particles, which can be framed in a wide variety of theories, covering different regions of the phase space [...]
CERN-THESIS-2023-255 - 235 p.


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2023-11-24
20:22
Angular Analysis of $B^{0}\rightarrow K^{*0}e^{+}e^{-}$ Decays at LHCb / Wang, Zhenzi
The subject of this thesis is the binned angular analysis of $B^{0}\rightarrow K^{*0}e^{+}e^{-}$ decays in the dielectron invariant mass squared ($q^{2}$) regions of $1.1<q^2<6.0\,\mathrm{GeV^{2}/c^{4}}$ and $1.1<q^2<7.0\,\mathrm{GeV^{2}/c^{4}}$ (`central $q^{2}$'), using data collected [...]
CERN-THESIS-2023-254 - 204 p.


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2023-11-24
12:02
Search for Higgs Boson Pair Production in the $b\bar{b}\tau^+\tau^-$ Final State with the ATLAS Experiment at the LHC / Deutsch, Christopher
A search for Higgs boson pair (HH) production in final states with two $b$ quarks and two $\tau$ leptons using 139 fb$^{-1}$ of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the Large Hadron Collider (LHC) is presented [...]
CERN-THESIS-2023-253 -


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2023-11-23
16:15
A measurement of charm mixing using $D^{0} \to K^{\pm} \pi^{\mp} \pi^{\pm} \pi^{\mp}$ decays at LHCb and the performance of a TORCH prototype / Smallwood, Jennifer
A measurement of the charm-mixing parameters is made using promptly produced $D^{0} \to K^{\pm} \pi^{\mp} \pi^{\pm} \pi^{\mp}$ decays, exploiting proton-proton collision data collected by LHCb during 2015-18 and corresponding to an integrated luminosity of 5.9 fb$^{-1}$ [...]
CERN-THESIS-2023-252 - 243 p.


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