Low Scale Trinification Symmetry Through Effects of Dimension-5
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Dissertation Submitted to the Combined Faculties of the Natural
Dissertation submitted to the Combined Faculties of the Natural Sciences and Mathematics of the Ruperto-Carola-University of Heidelberg. Germany for the degree of Doctor of Natural Sciences Put forward by Jamil Hetzel born in: Rheden, the Netherlands Oral examination: February 4th, 2015 Phenomenology of a left-right-symmetric model inspired by the trinification model Referees: Prof.dr.TilmanPlehn Prof. dr. Arthur Hebecker Ph¨anomenologie eines links-rechts-symmetrisches Modells basierend auf dem Trinifikationsmodell Das Trinifikationsmodell ist eine interessante Erweiterung des Standardmodells, die auf der Eichgruppe SU(3)C SU(3)L SU(3)R basiert. Das Modell beschreibt die Parit¨atsverletzung durch die spontane Brechung× × der Eichsymmetrie, und die gemessenen Fermionenmassen und -mischungswinkel k¨onnen mit wenigen Parametern reproduziert werden. Wir untersuchen die Ph¨anomenologie des Trinifikationsmodells bei niedrigen Energien, um seine Voraussa- gungen mit Experimenten vergleichen zu k¨onnen. Zu diesem Zweck konstruieren wir eine effektive Feldtheorie die es erlaubt, mit einer geringeren Anzahl von Teilchen und freien Parametern auszukommen. Die Modellparameter werden mittels den bereits vorliegenden Pr¨azisionsmessungen und experimentellen Grenzen eingeschr¨ankt. Der Skalarsektor des Mo- dells erm¨oglicht verschiedene ph¨anomenologische Szenarien, zum Beispiel ein leichtes fermio- phobisches Skalarteilchen zus¨atzlich zu einem standardmodellartigen Higgs, oder die Exi- stenz eines entarteten (Zwillings-)Higgsbosons bei 126 GeV. Wir zeigen wie die Messung der Higgskopplungen es erlaubt, zwischen solchen Szenarien und dem Standardmodell zu unterscheiden. Es stellt sich heraus, dass das Trinifikationsmodell mehrere neue Skalarteil- chen mit Massen im (100 GeV)-Bereich vorhersagt. Außerdem werden in großen Teilen des Parameterraums messbareO Abweichungen der Higgskopplungskonstanten von den Stan- dardmodellwerten erwartet. -
Magnetic Monopoles Revisited: Models and Searches at Colliders and in the Cosmos
KCL-PH-TH/2019-94 IFIC/20-12 MAGNETIC MONOPOLES REVISITED: MODELS AND SEARCHES AT COLLIDERS AND IN THE COSMOS NICK E. MAVROMATOS King's College London, Department of Physics, Theoretical Particle Physics and Cosmology Group, Strand, London, WC2R 2LS, UK [email protected] VASILIKI A. MITSOU Instituto de F´ısica Corpuscular (IFIC), CSIC { Universitat de Val`encia, C/ Catedr´atico Jos´eBeltr´an2, E-46980 Paterna (Valencia), Spain vasiliki.mitsou@ific.uv.es Received (Day Month Year) Revised (Day Month Year) In this review, we discuss recent developments in both the theory and the experimental searches of magnetic monopoles in past, current and future colliders and in the Cosmos. The theoretical models include, apart from the standard Grand Unified Theories, exten- sions of the Standard Model that admit magnetic monopole solutions with finite energy and masses that can be as light as a few TeV. Specifically, we discuss, among other scenar- ios, modified Cho-Maison monopoles and magnetic monopoles in (string-inspired, higher derivative) Born-Infeld extensions of the hypercharge sector of the Standard Model. We also outline the conditions for which effective field theories describing the interaction of monopoles with photons are valid and can be used for result interpretation in monopole production at colliders. The experimental part of the review focuses on, past and present, cosmic and collider searches, including the latest bounds on monopole masses and mag- netic charges by the ATLAS and MoEDAL experiments at the LHC, as well as prospects for future searches. Keywords: Magnetic monopoles; electromagnetism; theory; experimental techniques; arXiv:2005.05100v3 [hep-ph] 14 Aug 2020 searches; LHC; ATLAS; MoEDAL; IceCube; ANTARES. -
A Feynman Rules for Vectorlike Quarks 53
Phenomenology of Trinification models João Fonseca Seabra Thesis to obtain the Master of Science Degree in Engineering Physics Supervisors: Prof. Doutor Filipe Rafael Joaquim Prof. Doutor David Emanuel da Costa Examination Committee Chairperson: Prof.a Doutora Maria Teresa Haderer de la Peña Stadler Supervisor: Prof. Doutor Filipe Rafael Joaquim Member of the Committee: Doutor Joaquim Inácio da Silva Marcos November 2017 Acknowledgements Besides all the effort that I had put into this work, it surely would not be the same withoutthe help of many people. First of all, I devote a special acknowledgement to Professor Filipe Joaquim, not only for his guidance and support during the development of this work, but also for being the person who really convinced me through his lectures that Particle Physics is an amazing subject. I am also very grateful to Professor David Costa for his guidance. Even after leaving IST, he was always available to answer my doubts and questions. I would also like to thank my colleagues in IST for all the great discussions and study sessions that I had the fun and the pleasure to share with them during these years. Finally, a big ”thank you” to my family for their everlasting patience and support. i ii Resumo A compreensão do fenómeno de violação da simetria Conjugação de carga e Paridade (CP) tem-se revelado como um grande desafio em Física de Partículas. De facto, uma forte evidência dequeo Modelo Padrão (MP) precisa de ser expandido reside na sua incapacidade de dar resposta a questões estreitamente relacionadas com violação de CP, tais como a assimetria bariónica do Universo. -
Citation List of Elias Kiritsis
CITATION LIST OF ELIAS KIRITSIS This list includes SPIRES Citations as well as those from Physics Citation Index. Those that are in SPIRES are in black letters while additional ones from Physics Citation Index, books and PhD theses are in red. The total number of citations minus self-citations is given at the end of the file. Also given at the end of the file is the total number of citations from journals acceptable by the Science Citation Index. There are 2 papers with more than 250 citations, 25 with more than 100 citations and 32 with more than 50 citations. The h-index is 54 Available (with hyperlinks) from http://hep.physics.uoc.gr/ kiritsis/test/cit.pdf Total Number of Citations List of Citing Publications: List of Cited Publications: 1 Citing articles CITATIONS FOR [1] 1. Asymptotic freedom, asymptotic flatness and cosmology Elias Kiritsis (APC, Paris & Crete U. & CERN). Jul 22, 2013. 17 pp. Published in JCAP 1311 (2013) 011 CCTP-2013-11 DOI: 10.1088/1475-7516/2013/11/011 e-Print: arXiv:1307.5873 [hep-th] CITATIONS FOR [2] 1. Holographic RG flows and nearly-marginal operators Jun Bourdier, Elias Kiritsis. Oct 2, 2013. 23 pp. CCTP-2013-16, CCQCN-2013-11, CERN-PH-TH-2013-265, KCL-MTH-13-10, CCQCN-2013-11, CERN-PH-TH- 2013-265, KCL-MTH-13-10 e-Print: arXiv:1310.0858 [hep-th] CITATIONS FOR [3] 1. Introductory lectures to large-N QCD phenomenology and lattice results Biagio Lucini, Marco Panero. Sep 14, 2013. 60 pp. HIP-2013-18-TH e-Print: arXiv:1309.3638 [hep-th] CITATIONS FOR [4] 1. -
Running Neutrino Masses and Flavor Symmetries
Running Neutrino Masses and Flavor Symmetries Michael Andreas Schmidt Max-Planck-Institut für Kernphysik Saupfercheckweg 1 D-69117 Heidelberg E-Mail: [email protected] 50 Jahre 1958 2008 Max-Planck-Institut für Kernphysik Technische Universität München Physik Department Institut für Theoretische Physik T30d Running Neutrino Masses and Flavor Symmetries Dipl.-Phys. Univ. Michael Andreas Schmidt Vollständiger Abdruck der von der Fakultät für Physik der Technischen Universität München zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften (Dr. rer. nat.) genehmigten Dissertation. Vorsitzender: Univ.-Prof. Dr. Reiner Krücken Prüfer der Dissertation: 1. Prof. Dr. Manfred Lindner, Ruprecht-Karls-Universität Heidelberg 2. Univ.-Prof. Dr. Andrzej J. Buras Die Dissertation wurde am 10. Juni 2008 bei der Technischen Universität München eingereicht und durch die Fakultät für Physik am 30. Juni 2008 angenommen. Running Neutrino Masses and Flavor Symmetries Abstract The flavor structure of neutral fermion masses is completely different from charged fermion masses. The cascade seesaw framework allows to implement a cancellation mechanism, which leads to a weak hierarchy of neutrinos despite the large hierarchy in the charged fermion masses. We present one realization by the gauge group E6 and two in the framework of SO(10) based on discrete flavor symmetries T7 and Σ(81). Higher-dimensional operators as well as the flavon potential are discussed. Furthermore, since renormalization group (RG) effects can become very important in neutrino physics, especially in view of upcoming precision experiments, we have investigated several models. The Lµ − Lτ flavor symmetry in the standard seesaw scenario leads to quasi-degenerate neutrinos and therefore to large RG corrections.