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Thèses - PandA

Thèses en 2013:


Nom :  CHU

Prénom :  Xiaoyong

Titre : « Study of New Dark Matter Production Mechanisms and Their Possible                           Signatures »

Institution universitaire :        ULB – Physique Théorique



 Nom :  ROVAI

Prénom :  Antonin

Institution universitaire : Université Libre de Bruxelles

 Titre :  « Emergent Gravity from D-Branes »



 Nom :  GABUSI

Prénom : Michele

Titre : « Search for baryon number violation in top-quark decays with the CMS                            experiment »

 Institution universitaire :   UCL-CP3



Nom :  PIN 

Prénom :  Arnaud

Titre : “The Matrix Element Method at the LHC: A Search for the Associated Production of  Higgs and Z bosons.”

 Institution universitaire : UCL-CP3



Nom :   ZARO

Prénom :   Marco            

Titre: “Accurate predictions for Higgs production at the LHC: the VBF channel”

 Institution universitaire : UCL-CP3




Prénom :  Jérémy 

Titre : “Microscopic cluster model of elastic scattering and bremsstrahlung of light nuclei”

 Institution universitaire :ULB



 Nom : DRUET

 Prénom : Thomas

 Titre: “ Reactions involving exotic nuclei in a discretized-continuum model”

 Institution universitaire :ULB




Prénom :  Dmitry

Titre :  "Algebraic aspects of duality and higher-spin interactions."

Institution universitaire : UMONS 

Nicolas Franco
Titre : Lorentzian approach to noncommutative geometry
Promoteurs : Dominique Lambert et Anne Lemaître
Département de mathématique, FUNDP

Josef Lindman Hornlund
Titre: Sigma-models and Lie group symmetries in theories of gravity
Promoteur: Marc Henneaux

Cédric Troessaert
Titre: Aspects of dualities in gravitational theories
Promoteur: Glenn Barnich

Julie Delvax 
Promoteur: Laurent Favart

Charaf Otman
Promoteur: Barbara Clerbaux

Raffaella Toncelli
Promoteur: Pierre Marage

Mathieu Labare
Promoteur: Daniel Bertrand

Ella Jamsin
Titre: Hidden Symmetries and Black Holes in Supergravity
Promoteur: Marc Henneaux

Cyril Closset
Titre: Studies of fractional D-branes in the gauge/gravity correspondence & Flavored Chern-Simons quivers for M2-branes
Promoteur: Riccardo Argurio

Serge Leclercq
Titre: Higher spin interactions: cubic deformations on Minkowski and (Anti)de Sitter backgrounds
Promoteur: Philippe Spindel/Nicolas Boulanger

Nassiba Tabti
Titre: Les algèbres de Kac-Moody dans les théories de super-gravité
Promoteur: Laurent Houart, Physique Mathématique des Interactions Fondamentales, ULB

Vincent Wens
Titre: Des théories de jauge supersymétriques et la localisation
Promoteur: Frank Ferrari, Physique Mathématique des Interactions Fondamentales, ULB

Daniel Persson
Titre: Structures arithmétiques et hyperboliques en théorie des cordes
Promoteur: Marc Henneaux, Physique Mathématique des Interactions Fondamentales, ULB

Vincent Mathieu
Titre:  Exotic hadrons in constituent models
Promoteur : Claude Semay
Groupe de Physique Nucléaire Théorique - UMH

Thierry Castermans
Titre: Transient waveform recorder measurements from the Amanda II detector: an application to ultra high energy neutrino point sources
Promoteur: Philippe Herquet
Service de Physique des Particules élémentaires - UMH

Benoit Roland
"Mesure de la diffusion Compton a haute virtualite a HERA II"
Promoteur: Laurent Favart
Service de Physique des Particules Elementaires, ULB.



"Topology and Mass Generation Mechanisms in Abelian Gauge Field Theories"

Promoteur: Jan GOVAERTS

Center for Particle Physics and Phenomenology (CP3)

Institut de Physique Nucléaire (FYNU), UCL

Résumé: "Among a number of fundamental issues, the origin of inertial mass remains one of the major open problems in particle physics. Furthermore, topological effects related to non perturbative field configurations are poorly understood in those gauge theories of direct relevance to our physical universe. Motivated by such issues, this Thesis provides a deeper understanding for the appearance of topological effects in abelian gauge field theories, also in relation to the existence of a mass gap for the gauge interactions. These effects are not accounted for when proceeding through gauge fixings as is customary in the literature.

The original Topological-Physical factorisation put forth in this work enables to properly identify in topologically massive gauge theories (TMGT) a topological sector which appears under formal limits within the Lagrangian formulation. Our factorisation then allows for a straightforward quantisation of TMGT, accounting for all the topological features inherent to such dynamics. Moreover dual actions are constructed while preserving the gauge symmetry also in the presence of dielectric couplings. All the celebrated mass generation mechanisms preserving the gauge symmetry are then recovered but now find their rightful place through a network of dualities, modulo the presence of topological terms generating topological effects. In particular a dual formulation of the famous Nielsen-Olesen vortices is constructed from TMGT. Within a novel physically equivalent picture, these topological defects are interpreted as dielectric monopoles."

URL: http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-09032008-141544/unrestricted/Bertrand_Thesis.pdf

Nazim Bouatta
Titre: String Field Theory, Non-commutativity and Higher Spin
Promoteur: Glenn Barnich, Physique Mathématique des Interactions Fondamentales, ULB

Tomas Hreus
« Studies of Diffractive Scattering of Photons at Large Momentum Transfer And of the VFPS Detector at HERA â»
Promoteur : Laurent Favart et Jozef Urban
Physique des Particules Elementaires, ULB
In this thesis, two studies of the diffractive phenomena in the electron proton collisions with the H1 detector at HERA are presented. The first is the study of the inclusive elastic diffractive events in the regime of high photon virtuality, with the scattered proton detected by the Very Forward Proton Spectrometer (VFPS). The VFPS detector, designed to measure diffractive scattered protons with high acceptance, has been installed in 2004 to benefit from the HERA II luminosity increase. The selected event sample of an integrated luminosity of 130.2 pb-1 was collected in years 2006-2007. Data sample distributions are compared to the prediction based on the diffractive parton distribution functions, as extracted from the H1 measurement of the diffractive structure function F2D(3) at HERA I. After the study of the VFPS efficiency, the VFPS acceptance as a function of the xpom variable is estimated and studied in relation to the forward proton beam optics.
The second study leads to the cross section measurement of the diffractive scattering of quasi-real photons off protons, with the large momentum transfer, |t|. The final state photon is separated from the proton dissociation system, Y, by a large rapidity gap and has a large transverse momentum, p_T > 2 GeV. Large p_T imply the presence of the hard scale t (|t| ~ p_T^2) and allows predictions of the perturbative QCD to be applied. The measurement is based on an integrated luminosity 46.2 pb-1 of data collected in the 1999-2000 running period. Cross sections as a function of the incident photon-proton centre of mass energy, W, and |t| are measured in the range Q^2 < 0.01 GeV^2, 175 < W < 247 GeV, 4 < |t| < 36 GeV^2 and ypom < 0.05. The cross section measurements have been compared to predictions of LLA BFKL calculations.

Thierri de Vos
"Etude théorique et par simulations d'une phase nématique confinée et torsadée de molécules discotiques"
Promoteurs: Marc Baus et Jean-Paul Ryckaert
Service de Sciences des Polymères, ULB

Xavier Rouby
"Measurements of photon induced processes in CMS and forward proton 
detection at the LHC"
Promoteur: Krszysztof Piotrzkowski
Institut de Physique Nucléaire - Université catholique de Louvain
High energy photon induced processes at the CERN Large Hadron Collider 
(LHC) constitutes a unique testing ground for physics within and beyond 
the Standard Model of Elementary Particles. Colliding protons can interact 
by the exchange of one or two high energy photons, leading to very clean 
final state topologies. Several issues related to the study of photon 
interactions at the LHC are addressed in this Thesis. The detection of 
forward scattered protons, after the photon exchange, requires near-beam 
detectors. Developments of edgeless sensor prototypes have been realised 
as possible solutions for such an application. A proper design of these 
detectors has required developing a dedicated simulator (Hector) for the 
transport of charged particles particles in beamlines. Finally, the 
analyses of detection in the CMS experiment of the photon-induced 
exclusive production of lepton pairs are presented. In view of application 
early from the LHC start-up, in particular for the absolute luminosity 
measurement ­ the fundamental parameter of the LHC.

08/ 2008
Michel Herquet
Titre de la thèse : "A two-Higgs-doublet model : from twisted theory to LHC phenomenology"
Promoteur : Prof. Jean-Marc Gerard
Centre for Particle Physics and Phenomenology, Unite de Physique Theorique et Mathematique, Universite catholique de Louvain
"At the dawn of the Large Hadron Collider era, the Brout-Englert-Higgs mechanism remains the most appealing theoretical explanation of the electroweak symmetry breaking, despite the fact that the associated fundamental scalar boson has escaped any direct detection attempt. In this thesis, we consider a particular extension of the minimal Brout-Englert-Higgs scalar sector implemented in the Standard Model of strong and electroweak interactions. This extension, which is a specific, "twisted", realisation of the generic two-Higgs-doublet model, is motivated by a relative phase in the definition of the phenomenologically successful CP and custodial symmetries. Considering extensively various theoretical, indirect and direct constraints, this model appears as a viable alternative to more conventional scenarios like supersymmetric models, and gives grounds to largely unexplored possibilities of exotic scalar signatures at present and future collider experiments."

Ancilla Nininahazwe
Titre: Quasi exactly solvable extensions of some integrable quantum models
Promoteur: Y. Brihaye
Service de Physique Théorique et Mathématique, UMH

Fabien Buisseret
Titre:  Etude de la structure des hadrons par le modèle du tube de flux relativiste
Promoteur : Claude Semay
Groupe de Physique Nucléaire Théorique



Cédric Lorcé

Titre de la thèse : « Exotic and non-exotic baryon properties on the light-cone »

Promoteurs : Joseph Cugnon &M. Polyakov

Interactions fondamentales en Physique et Astrophysique – ULg



Claire Noel

Titre de la thèse : « Hydrodynamical simulations of detonations in superbursts »

Promoteur: Marcel Arnould, co-promoteur: Yves Busegnies

Institut d'Astronomie et d'astrophysique - ULB



Gérald Goldstein

Titre de la thèse : « Description de la dissociation de noyaux à halo par l’approximation eikonale dynamique »

Promoteur : Daniel Baye

Service de Physique Quantique – ULB (FSA)




Geoffrey Compère
Titre: Symétries et lois de conservation en théorie de jauge Lagrangiennes avec applications à la mécanique des trous noirs et à la gravité à trois dimensions
Promoteur: Glenn Barnich, Physique Mathématique des Interactions Fondamentales, ULB


Laura Lopez-Honorez

Titre de la thèse : « Dark matter signs and genesis »

Promoteur: Jean-Marie Frère

Physique théorique - UL

Dernière mise à jour par Michel Tytgat Lundi 24 Mars 2014