Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 101 for “"Higgs Boson"”.
-
Electroweak symmetry breaking in the era of the Higgs boson discovery
… lore, we show that a visible dynamics in the Higgs sector can contribute to supersymmetry breaking, as long as soft masses receive contributions also from one or more hidden sectors. A striking feature is the presence of a light pseudo-goldstino in the spectrum. We study potential collider …
-
A Novel Statistical Procedure Towards the Discovery of the Higgs Boson
… physicists hypothesized the existence of the Higgs Boson; a fundamental particle in the standard model of physics playing a crucial role in the understanding of the electroweak force. However, it took almost 50 years of technological advancements until its discovery was empirically announced …
-
SHEDDING LIGHT ON HIGGS BOSON SELF-INTERACTIONS IN THE BBƔƔ CHANNEL. PHOTON AND B-JET CALIBRATIONS, AND SEARCHES FOR HIGGS BOSON PAIRS WITH THE ATLAS EXPERIMENT.
… whose common theme is the study of the Higgs boson self-interactions through the search for Higgs boson pair production in the final state with two photons and two bottom quarks (bbγγ). The first analysis is a search for SM Higgs boson pairs (HH) in the bbγγ final state. No excess of …
-
Evidence for a Higgs boson in tau decays with the CMS detector
In this thesis, I describe the search for a Higgs boson through its decay to a pair of tan leptons with the tau-pair subsequently decaying to ail electron, a muon, and neutrinos. The search is performed using data collected from proton-proton collisions by the Compact Muon Solenoid experiment at …
-
Search for the standard model Higgs Boson in the Z gamma channel
The Higgs decay into a photon and a Z boson, with the Z boson decaying into an electron-positron pair (electron channel) or muon-antimuon pair (muon channel), allows for accurate reconstructions of the Higgs boson mass and measurement of the Higgs to Z-[gamma] coupling. We explore selection …
-
Search for the Higgs Boson in the ZZ --> ℓℓvv channel with CMS
… the massive weak force mediators - the W and Z bosons, are required to be massless to satisfy gauge symmetry. To incorporate EWSB into the SM, the Higgs mechanism is invoked and introduces a scalar field, the Higgs field, that couples to the W and Z bosons and gives them mass. Additionally, the …
-
Search for exotic Higgs boson decays to four leptons with the ATLAS detector
Searches for exotic Higgs boson decays are well motivated by various theoretical models, as well as the constraints from Higgs boson measurement results. The focus is on exotic Higgs boson decays to a pair of beyond-the-Standard-Model spin-0 particles $a$. This dissertation conducts two analyses …
-
Searching for exotic Higgs boson decays using a low mass double b-tagger
… double b-tagger for use in the context of exotic Higgs decays. After the discovery of the Higgs boson at the Large Hadron Collider, an effort to measure its properties in detail has ensued. Current measurements only constrain non- Standard Model or “exotic” Higgs decays to about < 26%. Allowing …
-
Search for the Higgs boson in its decay into tau leptons at CMS
A search for the Standard Model Higgs boson in the H --> rr channel is presented. The search is performed on proton collision data collected by the Compact Muon Solenoid at the Large Hadron Collider. The data corresponds to 4.9 fb-1 of proton collisions at [square root of]s = 7 TeV and 19.5 fb-1 at …
-
A search for the Higgs boson in H->WW->lvlv with 8.2 fb-1
… documents a search for Standard Model (SM) Higgs boson to WW production in the final state of two charged leptons (e, μ) and two neutrino final state resulting from in pp collisions at √ s = 1.96 TeV. The data collected by the CDF II detector at the Tevatron collider at Fermilab, corresponds …
-
Statistical interpretation of exotics monojet data in search of an invisibly decaying Higgs Boson
… the recent discovery of a Standard Model Higgs-like particle at the Large Hadron Collider, this study searches for the evidence of invisible decays of this particle. Assuming that this is the Standard Model Higgs boson, its decay to invisible particles is not expected to be measurable in …
-
Observation and examination of a Higgs boson in the ZZ to four lepton channel
… a search for decays of the Standard Model (SM) Higgs boson to two Z bosons to four charged leptons. We observe a single excess above background expectation with a significance of 7.4 standard deviations at a mass of 125.6 ±0.4(stat) ±0.2(syst) GeV. This excess has a signal strength parameter ... …
-
Search for the Standard Model Higgs boson decaying to two W bosons at CMS
… search for the production of the Standard Model Higgs boson at the Large Hadron Collider, through its decay mode to two W bosons, which each in turn decay into a charged lepton and a neutrino. The Higgs boson is the only elementary particle predicted by the Standard Model of particle physics …
-
Multi-Higgs boson production via photon fusion at muon colliders in the Triplet Higgs Model
… predictions for the scattering cross sections of Higgs boson pair and triple production via photon fusion at future muon colliders within the framework of the Higgs Triplet Model, a beyond-the-Standard Model theory that generates neutrino masses. High-energy muon beams can emit collinear photons, …
-
Suche nach dem Higgs-Boson im Vier-Jet-Kanal mit dem L3-Detektor bei LEP
This thesis presents the search for the Higgs boson which is predicted by the Standard Model of Particle Physics in order to endow bosons and fermions with their observed masses. The search is performed using data taken by the L3 experiment at the Large Electron Positron Collider (LEP) during the …
-
Searches for Higgs Boson Pair Production in the bbbb Final State with the ATLAS Detector
This thesis presents searches for Higgs boson pair production in the $b\bar{b}b\bar{b}$ final state using data collected by the ATLAS detector from proton-proton collisions at $\sqrt{s}=13$ TeV during the entirety of LHC Run 2 and at $\sqrt{s}=13.6$ TeV over a portion of Run 3. Three distinct …
-
Exclusive search for Higgs boson to gamma-gamma decay via vector boson fusion production mechanism
We perform an exclusive search for the Higgs boson to gamma-gamma decay via vector boson fusion. We utilize the characteristic features of vector boson fusion, such as the di-jet [Delta][eta] and mass, as well as the di-photon [rho][tao], to search for the Higgs boson to gamma-gamma decay via the …
-
Suche nach dem Higgs-Boson in hadronischen Endzuständen mit fehlender Energie am L3-Experiment bei LEP
This thesis presents searches for the Higgs boson, which is predicted by the Standard Model of Particle Physics and its extensions in order to endow fermions and bosons with their observed masses. While the Standard Model predicts only one Higgs boson "H", the Minimal Supersymmetric Extension …
Page 1 of 6