The Electrostrong Relation Nikola Perkovic
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Tests of a Family Gauge Symmetry Model at 103 Tev Scale
Physics Letters B 695 (2011) 279–284 Contents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb Tests of a family gauge symmetry model at 103 TeV scale ∗ Yoshio Koide a, , Yukinari Sumino b, Masato Yamanaka c a Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan b Department of Physics, Tohoku University, Sendai 980-8578, Japan c MISC, Kyoto Sangyo University, Kyoto 603-8555, Japan article info abstract Article history: Based on a specific model with U(3) family gauge symmetry at 103 TeV scale, we show its experimental Received 5 October 2010 signatures to search for. Since the gauge symmetry is introduced with a special purpose, its gauge Received in revised form 16 November 2010 coupling constant and gauge boson mass spectrum are not free. The current structure in this model Accepted 20 November 2010 leads to family number violations via exchange of extra gauge bosons. We investigate present constraints Available online 24 November 2010 from flavor changing processes and discuss visible signatures at LHC and lepton colliders. Editor: T. Yanagida © 2010 Elsevier B.V. All rights reserved. Keywords: Family gauge symmetry Family number violations LHC extra gauge boson search 1. Introduction First,letusgiveashortreview:“Whydoweneedafamily gauge symmetry?” In the charged lepton sector, we know that an empirical relation [4] In the current flavor physics, it is a big concern whether fla- vors can be described by concept of “symmetry” or not. If the flavors are described by a symmetry (family symmetry), it is also me + mμ + mτ 2 K ≡ √ √ √ = (1) interesting to consider that the symmetry is gauged. -
Publication List (2004 – April 2018)
Publication List (2004 { April 2018) 1. \Another Formula for the Charged Lepton Masses", Yoshio Koide , Phys. Lett. B, 777 131-133 (2018) 2. \Structure of Right-Handed Neutrino Mass Matrix", Yoshio Koide , Phys. Rev. D, 96, 095005 (2017) 3. \Flavon VEV Scales in U(3)×U(3)0 Model", Yoshio Koide, Hiroyuki Nishiura, Int.J. Mod. Phys. A 32, 1750085-1-25 (2017) 4. \Sumino's Cancellation Mechanism in an Anomaly-Free Model", Yoshio Koide, Mod. Phys. Lett. A 32, 1750062-10 (2017) 5. \Muon-Electron Conversion in a Family Gauge Boson Model", Yoshio Koide, Masato Yamanaka, Phys. Lett. B 762, 41-46 (2016) 6. \Quark and Lepton Mass Matrices Described by Charged Lepton Masses", Yoshio Koide, Hiroyuki Nishiura, Mod. Phys. Lett. A, 31, 1650125-1-13 (2016) 7. \ Quark and Lepton Mass Matrix Model with Only Six Family-Independent Parameters", Yoshio Koide, Hiroyuki Nishiura, Phys.Rev.D 92, 111301(R) 1-6 (2015) 8. \Quark and lepton mass matrix model with only six family-independent parameters", Yoshio Koide, Hiroyuki Nishiura, Phys. Rev. D, 92, 111301(R)1-6 (2015). 9. \Family gauge boson production at the LHC", Yoshio Koide, Masato Yamanaka and Hiroshi Yokoya, Phys. Lett. B, 750, 384-389 (2015). 10. \Family gauge boson mass estimated from K+ ! π+νν¯", Yoshio Koide, Phys. Rev. D, 92, 036009-1 - 036009-5 (2015). 11. \Can family gauge bosons be visible by terrestrial experiments?", Yoshio Koide, JPS Conf. Proc. , 010009-010013 (2015). 12. \Origin of hierarchical structures of quark and lepton mass matrices", Yoshio Koide, Hiroyuki Nishiura, Phys. Rev. D, 91, 116002-1-10 (2015). -
Finite Quantum Gauge Theories
Finite quantum gauge theories Leonardo Modesto1,∗ Marco Piva2,† and Les law Rachwa l1‡ 1Center for Field Theory and Particle Physics and Department of Physics, Fudan University, 200433 Shanghai, China 2Dipartimento di Fisica “Enrico Fermi”, Universit`adi Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy (Dated: August 24, 2018) We explicitly compute the one-loop exact beta function for a nonlocal extension of the standard gauge theory, in particular Yang-Mills and QED. The theory, made of a weakly nonlocal kinetic term and a local potential of the gauge field, is unitary (ghost-free) and perturbatively super- renormalizable. Moreover, in the action we can always choose the potential (consisting of one “killer operator”) to make zero the beta function of the running gauge coupling constant. The outcome is a UV finite theory for any gauge interaction. Our calculations are done in D = 4, but the results can be generalized to even or odd spacetime dimensions. We compute the contribution to the beta function from two different killer operators by using two independent techniques, namely the Feynman diagrams and the Barvinsky-Vilkovisky traces. By making the theories finite we are able to solve also the Landau pole problems, in particular in QED. Without any potential the beta function of the one-loop super-renormalizable theory shows a universal Landau pole in the running coupling constant in the ultraviolet regime (UV), regardless of the specific higher-derivative structure. However, the dressed propagator shows neither the Landau pole in the UV, nor the singularities in the infrared regime (IR). We study a class of new actions of fundamental nature that infinities in the perturbative calculus appear only for gauge theories that are super-renormalizable or finite up to some finite loop order. -
Koide Mass Equations for Hadrons
Koide mass equations for hadrons Carl Brannen∗1 18500 148th Ave. NE, T-1064, Redmond, WA, USA Email: Carl Brannen∗- [email protected]; ∗Corresponding author Abstract Koide's mass formula relates the masses of the charged leptons. It is related to the discrete Fourier transform. We analyze bound states of colored particles and show that they come in triplets also related by the discrete Fourier transform. Mutually unbiased bases are used in quantum information theory to generalize the Heisenberg uncertainty principle to finite Hilbert spaces. The simplest complete set of mutually unbiased bases is that of 2 dimensional Hilbert space. This set is compactly described using the Pauli SU(2) spin matrices. We propose that the six mutually unbiased basis states be used to represent the six color states R, G, B, R¯, G¯, and B¯. Interactions between the colors are defined by the transition amplitudes between the corresponding Pauli spin states. We solve this model and show that we obtain two different results depending on the Berry-Pancharatnam (topological) phase that, in turn, depends on whether the states involved are singlets or doublets under SU(2). A postdiction of the lepton masses is not convincing, so we apply the same method to hadron excitations and find that their discrete Fourier transforms follow similar mass relations. We give 39 mass fits for 137 hadrons. PACS Codes: 12.40.-y, 12.40.Yx, 03.67.-a 1 Background Introduction The standard model of elementary particle physics takes several dozen experimentally measured characteristics of the leptons and quarks as otherwise arbitrary parameters to the theory. -
Higgs Boson Mass and New Physics Arxiv:1205.2893V1
Higgs boson mass and new physics Fedor Bezrukov∗ Physics Department, University of Connecticut, Storrs, CT 06269-3046, USA RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA Mikhail Yu. Kalmykovy Bernd A. Kniehlz II. Institut f¨urTheoretische Physik, Universit¨atHamburg, Luruper Chaussee 149, 22761, Hamburg, Germany Mikhail Shaposhnikovx Institut de Th´eoriedes Ph´enom`enesPhysiques, Ecole´ Polytechnique F´ed´eralede Lausanne, CH-1015 Lausanne, Switzerland May 15, 2012 Abstract We discuss the lower Higgs boson mass bounds which come from the absolute stability of the Standard Model (SM) vacuum and from the Higgs inflation, as well as the prediction of the Higgs boson mass coming from asymptotic safety of the SM. We account for the 3-loop renormalization group evolution of the couplings of the Standard Model and for a part of two-loop corrections that involve the QCD coupling αs to initial conditions for their running. This is one step above the current state of the art procedure (\one-loop matching{two-loop running"). This results in reduction of the theoretical uncertainties in the Higgs boson mass bounds and predictions, associated with the Standard Model physics, to 1−2 GeV. We find that with the account of existing experimental uncertainties in the mass of the top quark and αs (taken at 2σ level) the bound reads MH ≥ Mmin (equality corresponds to the asymptotic safety prediction), where Mmin = 129 ± 6 GeV. We argue that the discovery of the SM Higgs boson in this range would be in arXiv:1205.2893v1 [hep-ph] 13 May 2012 agreement with the hypothesis of the absence of new energy scales between the Fermi and Planck scales, whereas the coincidence of MH with Mmin would suggest that the electroweak scale is determined by Planck physics. -
Physics and Mathematics of Quantum Field Theory
Physics and Mathematics of Quantum Field Theory Jan Derezinski´ (University of Warsaw), Stefan Hollands (Leipzig University), Karl-Henning Rehren (Gottingen¨ University) July 29, 2018 – August 3, 2018 1 Overview of the Field The origins of quantum field theory (QFT) date back to the early days of quantum physics. Having developed quantum mechanics, describing non-relativistic systems of a finite number of degrees of freedom, physicists tried to apply similar ideas to relativistic classical field theories such as electrodynamics following early attempts already made by the founding fathers of quantum mechanics. Since quantum mechanics is usually “derived” from classical mechanics by a procedure called quantization, the first attempts tried to mimick this procedure for classical field theories. But it was clear almost from the beginning that this endeavor would not work without qualitatively new ideas, owing both to the new difficulties presented by relativistic kinematics, as well as to the fact that field theories, while possessing a Lagrangian/Hamiltonian formulation just as classical mechanics, effectively describe infinitely many degrees of freedom. In particular, QFT completely dissolved the classical distinction between “particles” (like the electron) and “fields” (like the electromagnetic field). Instead, the dichotomy in nomenclature acquired a very different meaning: Fields are the fundamental entities for all sorts of matter, while particles are manifestations when the fields arise in special states. Thus, from the outset, one is dealing with systems with an unlimited number of particles. Early successes of quantum field theory consolidated by the early 50’s, such as precise computations of the Lamb shifts of the Hydrogen and of the anomalous magnetic moment of the electron, were accompanied around the same time by the first attempts to formalize this theory in a more mathematical fashion. -
Department of Physics and Astronomy University of Heidelberg
Department of Physics and Astronomy University of Heidelberg Diploma thesis in Physics submitted by Kher Sham Lim born in Pulau Pinang, Malaysia 2011 This page is intentionally left blank Planck Scale Boundary Conditions And The Standard Model This diploma thesis has been carried out by Kher Sham Lim at the Max Planck Institute for Nuclear Physics under the supervision of Prof. Dr. Manfred Lindner This page is intentionally left blank Fakult¨atf¨urPhysik und Astronomie Ruprecht-Karls-Universit¨atHeidelberg Diplomarbeit Im Studiengang Physik vorgelegt von Kher Sham Lim geboren in Pulau Pinang, Malaysia 2011 This page is intentionally left blank Randbedingungen der Planck-Skala und das Standardmodell Die Diplomarbeit wurde von Kher Sham Lim ausgef¨uhrtam Max-Planck-Institut f¨urKernphysik unter der Betreuung von Herrn Prof. Dr. Manfred Lindner This page is intentionally left blank Randbedingungen der Planck-Skala und das Standardmodell Das Standardmodell (SM) der Elementarteilchenphysik k¨onnte eine effektive Quan- tenfeldtheorie (QFT) bis zur Planck-Skala sein. In dieser Arbeit wird diese Situ- ation angenommen. Wir untersuchen, ob die Physik der Planck-Skala Spuren in Form von Randbedingungen des SMs hinterlassen haben k¨onnte. Zuerst argumen- tieren wir, dass das SM-Higgs-Boson kein Hierarchieproblem haben k¨onnte, wenn die Physik der Planck-Skala aus einem neuen, nicht feld-theoretischen Konzept bestehen w¨urde. Der Higgs-Sektor wird bez¨uglich der theoretischer und experimenteller Ein- schr¨ankungenanalysiert. Die notwendigen mathematischen Methoden aus der QFT, wie z.B. die Renormierungsgruppe, werden eingef¨uhrtum damit das Laufen der Higgs- Kopplung von der Planck-Skala zur elektroschwachen Skala zu untersuchen. -
Tests of a Family Gauge Symmetry Model at 103 Tev Scale ∗ Yoshio Koide A, , Yukinari Sumino B, Masato Yamanaka C
CORE Metadata, citation and similar papers at core.ac.uk Provided by Elsevier - Publisher Connector Physics Letters B 695 (2011) 279–284 Contents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb Tests of a family gauge symmetry model at 103 TeV scale ∗ Yoshio Koide a, , Yukinari Sumino b, Masato Yamanaka c a Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan b Department of Physics, Tohoku University, Sendai 980-8578, Japan c MISC, Kyoto Sangyo University, Kyoto 603-8555, Japan article info abstract Article history: Based on a specific model with U(3) family gauge symmetry at 103 TeV scale, we show its experimental Received 5 October 2010 signatures to search for. Since the gauge symmetry is introduced with a special purpose, its gauge Received in revised form 16 November 2010 coupling constant and gauge boson mass spectrum are not free. The current structure in this model Accepted 20 November 2010 leads to family number violations via exchange of extra gauge bosons. We investigate present constraints Available online 24 November 2010 from flavor changing processes and discuss visible signatures at LHC and lepton colliders. Editor: T. Yanagida © 2010 Elsevier B.V. Open access under CC BY license. Keywords: Family gauge symmetry Family number violations LHC extra gauge boson search 1. Introduction First,letusgiveashortreview:“Whydoweneedafamily gauge symmetry?” In the charged lepton sector, we know that an empirical relation [4] In the current flavor physics, it is a big concern whether fla- vors can be described by concept of “symmetry” or not. If the flavors are described by a symmetry (family symmetry), it is also me + mμ + mτ 2 K ≡ √ √ √ = (1) interesting to consider that the symmetry is gauged. -
Renormalization of Dirac's Polarized Vacuum
RENORMALIZATION OF DIRAC’S POLARIZED VACUUM MATHIEU LEWIN Abstract. We review recent results on a mean-field model for rela- tivistic electrons in atoms and molecules, which allows to describe at the same time the self-consistent behavior of the polarized Dirac sea. We quickly derive this model from Quantum Electrodynamics and state the existence of solutions, imposing an ultraviolet cut-off Λ. We then discuss the limit Λ → ∞ in detail, by resorting to charge renormaliza- tion. Proceedings of the Conference QMath 11 held in Hradec Kr´alov´e(Czechia) in September 2010. c 2010 by the author. This paper may be reproduced, in its entirety, for non-commercial purposes. For heavy atoms, it is necessary to take relativistic effects into account. However there is no equivalent of the well-known N-body (non-relativistic) Schr¨odinger theory involving the Dirac operator, because of its negative spectrum. The correct theory is Quantum Electrodynamics (QED). This theory has a remarkable predictive power but its description in terms of perturbation theory restricts its range of applicability. In fact a mathemat- ically consistent formulation of the nonperturbative theory is still unknown. On the other hand, effective models deduced from nonrelativistic theories (like the Dirac-Hartree-Fock model [40, 16]) suffer from inconsistencies: for instance a ground state never minimizes the physical energy which is always unbounded from below. Here we present an effective model based on a physical energy which can be minimized to obtain the ground state in a chosen charge sector. Our model describes the behavior of a finite number of particles (electrons), cou- pled to that of the Dirac sea which can become polarized. -
YITP Workshop : “Progress in Particle Physics”
YITP Workshop : \Progress in Particle Physics" June 29 { July 2, 2004 Yukawa Institute for Theoretical Physics, Kyoto University June 29 9:00 { 10:30 Yoshio Koide (U. Shizuoka) Can a Flavor Symmetry exist? Haruhiko Terao (Kanazawa) Democratic mass matrices by strong unification and the lepton mixing angles Nao-aki Yamashita (Saga) Neutrino Masses and Mixing Matrix from SU(1,1) Horizontal Symmetry | coffee break | 11:00 { 12:00 Tetsuo Shindou (KEK) Origins of CP phases in GUT models Koichi Matsuda (Osaka) Phenomenological analysis of lepton and quark Yukawa couplings in SO(10) two Higgs model | lunch | 14:00 { 15:30 Tatsu Takeuchi (Virginia Tech) Phenomenology of not-so-heavy neutral leptons Toshihiko Ota (Osaka) Lepton flavor violation via Higgs bosons Masato Senami (ICRR, Tokyo) B φK in vector-like quark model ! s | coffee break | 16:00 { 18:00 Shinya Kanemura (Osaka) A mechanism for the top-bottom mass hierarchy Kenichi Senda (GUAS/KEK) The observation of neutrino from J-PARC in Korea Zenro Hioki (Tokushima) Optimal-observable analysis of top production/decay at photon-photon collider Hiroyuki Kawamura (KEK) Soft gluon resummation in transversely polarized Drell-Yan process June 30 9:00 { 10:30 (English session) Michael Peskin (SLAC) [review] Beyond the Constrained Minimal Supersymmetric Standard Model Koichi Hamaguchi (DESY) Supergravity at Colliders | coffee break | 11:00 { 12:00 Satoshi Mishima (Tohoku) Implication of Rare B Meson Decays on Squark Flavor Mixing Hideo Itoh (Ibaraki) Tauonic B decay in a supersymmetric model | lunch | 14:00 -
Muon–Electron Conversion in a Family Gauge Boson Model
Physics Letters B 762 (2016) 41–46 Contents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb Muon–electron conversion in a family gauge boson model ∗ Yoshio Koide a, Masato Yamanaka b, a Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan b Maskawa Institute, Kyoto Sangyo University, Kyoto 603-8555, Japan a r t i c l e i n f o a b s t r a c t 1 Article history: We study the μ–e conversion in muonic atoms via an exchange of family gauge boson (FGB) A2 in a Received 8 August 2016 U (3) FGB model. Within the class of FGB model, we consider three types of family-number assignments Accepted 1 September 2016 for quarks. We evaluate the μ–e conversion rate for various target nuclei, and find that next generation Available online 6 September 2016 μ–e conversion search experiments can cover entire energy scale of the model for all of types of the Editor: N. Lambert quark family-number assignments. We show that the conversion rate in the model is so sensitive to u d u† d up- and down-quark mixing matrices, U and U , where the CKM matrix is given by V CKM = U U . Precise measurements of conversion rates for various target nuclei can identify not only the types of quark family-number assignments, but also each quark mixing matrix individually. © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license 3 (http://creativecommons.org/licenses/by/4.0/). -
A Unified Description of Quark and Lepton Mass Matrices in A
A Unified Description of Quark and Lepton Mass Matrices in a Universal Seesaw Model (a) Yoshio Koide∗†and Hideo Fusaoka‡ Department of Physics, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan (a) Department of Physics, Aichi Medical University, Nagakute, Aichi 480-1195, Japan (September 16, 2002) In the democratic universal seesaw model, the mass matrices are given by f LmLFR +F LmRfR + F LMF FR (f: quarks and leptons; F : hypothetical heavy fermions), mL and mR are universal for up- and down-fermions, and MF has a structure (1+bf X)(bf is a flavour-dependent parameter, and X is a democratic matrix). The model can successfully explain the quark masses and CKM mixing parameters in terms of the charged lepton masses by adjusting only one parameter, bf . However, so far, the model has not been able to give the observed bimaximal mixing for the neutrino sector. In the present paper, we consider that MF in the quark sectors are still “fully” democratic, while MF in the lepton sectors are partially democratic. Then, the revised model can reasonably give a nearly bimaximal mixing without spoiling the previous success in the quark sectors. PACS numbers: 14.60.Pq, 12.15.Ff, 11.30.Hv I. INTRODUCTION Thus, the model answers the question why the masses of quarks (except for top quark) and charged leptons are so small with respect to the electroweak scale Λ ( A. What is the universal seesaw model? L 102 GeV). On the other hand, the top quark mass en-∼ hancement is understood from the additional condition Stimulated by the recent progress of neutrino experi- detMF = 0 for the up-quark sector (F = U) [2–4].