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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 233 for “"Elementary Particles"”.
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Mass levels of some elementary particles
The structure and mass levels of some elementary particles are presented. A non-relativistic bound state model has been used to describe the J \ψ and ψ' particles. The order of levels, 1S - 2P - 2S, as observed in the ψ, X, ψ’ spectroscopy is generally assumed. We introduce as interaction …
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Novel Electromagnetic Properties of Elementary Particles
… What happens when some non electrically charged elementary particles couple to the photon? We discuss neutrino electromagnetic properties, a dark photon portal to dark matter and magnetic monopoles produced by cosmic rays in the milky way. We don't just discuss these models, but show how to …
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Measurement of cosmic antiprotons with the alpha magnetic spectrometer aboard the International Space Station
… of the fluxes and flux ratios for the charged elementary particles in cosmic rays by AMS. In the absolute rigidity range 60 to 500 GV, the -p , p, and positron (e+) fluxes are found to have nearly identical rigidity dependence. This contrasts with the electron (e-) flux, which exhibits a …
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Homogeneous Symplectic Manifolds of the Galilei Group
… as the manifolds of classical motions of elementary particles with or without spin, mass, and color.</p>
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Radioactive source measurements in a liquid xenon time projection chamber
… in the current standard model that describes elementary particles and their interactions. One attractive case for such studies is the double beta decay of 136Xe to 136Ba. Currently there are several international projects under development that aim to observe 136Xe neutrino less double beta …
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A measurement of the contribution of the gluon to the spin of the nucleon
… deep inelastic scattering events in the form of elementary particles resulting from the decay of charmed particles, which were known to be unique indicators of PGF. Best results indicate ΔG/G = 0.131± 0.164 (stat.) ± 0.131(syst.) at xg = 0.35 and Q2 = 0.18, a result consistent with zero or a …
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Model independent search for new physics at the Tevatron
The Standard Model of elementary particles can not be the final theory. There are theoretical reasons to expect the appearance of new physics, possibly at the energy scale of few TeV. Several possible theories of new physics have been proposed, each with unknown probability to be confirmed. Instead …
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Accelerating Flow-Based Sampling for Large-𝑁 Gauge Theories
… widely accepted as the best known formulation of elementary particles and their interactions. However, making experimental predictions using the Standard Model involves mathematical and computational challenges due to its complexity. Quantum chromodynamics (QCD), which can be described as an SU(3) …
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Quantization of Fields of Arbitrary Spin
The search for relativistic field equations for elementary particles of arbitrary spin is a long standing problem of Quantum Field Theory. Although much work has been done on relativistic field theories describing fields with various mass-spin spectra, little has been done on picking out those …
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The QED beta-Function: A First Principles Derivation
… which collectively describe the dynamics of elementary particles at high energies. Unfortunately, the dynamical expressions for interacting theories do not have analytical solutions. Approximate solutions are obtained through perturbation theory, although a significant obstacle is encountered …
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Precision theory for LHC/FCC : new results for the five point function and interface between KKMC-hh and MG5_aMC@NLO.
… with the opportunity to discover the fundamental particles in nature and explore the interactions among them. The Standard Model (SM) of particle physics reflects our best knowledge of elementary particles and their interactions at present, which is formulated by a gauge quantum field theory with …
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Proton Inelastic Cross-section Measurement on Argon with the ProtoDUNE-SP Detector and an Investigation of MicroBooNE Low Energy Excess
Neutrinos are elementary particles in the Standard Model and studies of their characteristics as well as properties are of great importance to particle physics together with other disciplines. Precise measurements of neutrino oscillations can reveal the value of the 𝐶𝑃 violation phase in the lepton …
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Characteristics of High Energy Particle Interactions from the Study of Irregular Air Showers
… the atmosphere to learn about the structure of elementary particles through the characteristics of their collisions at extremely high energy. The energy available in the collisions of cosmic ray protons with atmospheric nuclei exceeds greatly that achieved or achievable in any man-made …
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ΔΙΑΛΕΚΤΙΚΗ ΦΥΣΙΚΗ ΚΑΙ ΕΣΧΑΤΟΛΟΓΙΚΗ ΘΕΟΛΟΓΙΑ. Ο ΣΥΓΧΡΟΝΟΣ ΦΙΛΟΣΟΦΙΚΟΣ ΔΙΑΛΟΓΟΣ ΦΥΣΙΚΗΣ ΚΑΙ ΘΕΟΛΟΓΙΑΣ ΕΠΙ ΤΗ ΒΑΣΕΙ ΤΟΥ ΕΠΙΣΤΗΜΟΝΙΚΟΥ ΕΡΓΟΥ ΤΟΥ W. HEISENBERG
… (1927) AND THE UNIFIED FIELD THEORY OF ELEMENTARY PARTICLES (1958), POINT OUT TO A TOTALLY NEW EPISTEMOLOGICAL AND ONTOLOGICAL SITUATION. THE PRINCIPLE OF UNCERTAINTY MEANS A PROFOUND REVISION IN THE SUBJECT OF THE OBJECTIVITY OF THE DETERMINISM AND OF THE HERMENEUTICS. THE UNIFIED FIELD …
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Study on the Performance of Neutrino Detection in JUNO (Jiangmen Underground Neutrino Observatory)
… of new Physics beyond the Standard Model of the elementary particles. The discovery of the flavour oscillation of neutrinos had the direct con- sequence that the neutrino has a very small mass, if compared to other leptons, in contrast as was hypothesized when it was introduced. There are three …
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Precision Physics with W-bosons at the Large Hadron Collider
… now a well-established and observed block of the elementary particles table, but the era of Precision Physics opens up new ways of utilising them in an attempt to uncover the mystery of physics beyond the Standard Model. Being central to what is called Electroweak Symmetry Breaking mechanism, they …
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Eliminating critical slowing down in Monte Carlo calculations
We examine methods to improve the major numerical difficulties in lattice field theory. Traditional Metropolis and heat bath Monte Carlo methods in lattice calculations break down whenever one tries to calculate thermodynamic quantities near critical points; this phenomenon is called Critical …
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Antiparticle to particle ratios in gold+gold and copper+copper collisions at the Relativistic Heavy Ion Collider.
Antiparticle to particle ratios in gold+gold and copper+copper collisions at the Relativistic Heavy Ion Collider.
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Improved Search for Heavy Neutral Scalars A and H Using ttZ Events from 13 TeV pp Collisions at CMS
This thesis presents a search for heavy neutral scalars A and H via the cascade decay A->ZH with H->tt and semileptonic decays of the top quarks. The search is performed using proton-proton collision data recorded by the CMS experiment at sqrt(s) = 13 TeV during LHC Run 2, corresponding to an …
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