Dynamical Supersymmetry Breaking Without Messenger Gauge Interactions

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PoS(HEP2005)344

supersymmetry breaking by the standard model gauge interactions. Assuming that supersymmetry is broken in a sector that respects a global SU (5) symmetry, the ratio of the top-squark mass to the right-handed selectron mass is then m 2 t m 2 e ' (4=3)g4 3 (3=5)g4 1 ' (7 9)2: (2.3) 344/22 PoS(HEP2005)344

Gauge Mediation in the NMSSM with a Light Singlet: Sparticles

Supersymmetry breaking is parametrized by a non-dynamical background field X =M+Fq2. Apart from the Yukawa interactions, the superpotential is given by the NMSSM part, the spurion- messenger couplings and the singlet-messenger couplings, W =W

Classification of three-family grand unification in string

Some of the models have an apparent anomalous U~1! gauge symmetry. @S0556-2821~97!01212-5# PACS number~s!: 11.25.Mj, 12.10.Dm, 12.60.Jv I. INTRODUCTION For superstring theory to describe nature, it must contain the standard model of strong and electroweak interactions as part of its low energy ~i.e., below the string scale! effective field theory.

arXiv:0712.1355v2 [hep-ph] 11 Dec 2007

Dynamical Supersymmetry Breaking and Low Energy Gauge Mediation Michael Dine and John D. Mason Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz CA 95064 Abstract Dynamical breaking of supersymmetry was long thought to be an exceptional phe-nomenon, but recent developments have altered

JHEP 022P 0408

ity [3, 4] or Dynamical Supersymmetry Breaking [5 7]. If supersymmetric gauge interactions would be the only interactions that couple the visible sector with the messenger/sequestered sector, the phenomenologically required µ

Title Fine-tuning in gauge mediated supersymmetry breaking

models with gauge mediated supersymmetry breaking. With the aim of solving this problem, we consider a new type of models in which the top Yukawa coupling is induced at TeV scale through mass mixing with unknown matter fields. Then it is found that the fine-tuning problem can be eliminated essentially. We

Abstract - International Nuclear Information System

supersymmetry breaking and its mediation which induces such a type of mass spectrum. The scenario is basically the gauge mediated supersymmetry breaking [8] in which the threshold of messenger fields is affected by the super-Weyl anomaly mediation [9, 10] in supergravity.

atlas.kek.jp

ATLAS detector and physics performance Volume II Technical Design Report 25 May 1999 20 Supersymmetry 811 20 Supersymmetry 20.1 Introduction Supersymmetry or SUSY is one o

Supersymmetry breaking and signatures at the LHC

Supersymmetry breaking Although this is a part of the title of my talk, I'm not very interested in how SUSY is broken. SUSY must be broken, and there are many examples of (dynamical) SUSY breaking models. For now, it is enough to assume that there is some SUSY breaking sector and we are communicating with it.

Phenomenology of Higgsino NLSPs - Rutgers Physics & Astronomy

What is Gauge Mediation? In its purest form, gauge mediation means that some SUSY-breaking hidden sector has the Standard Model gauge group as a global symmetry, and the MSSM weakly gauges this global symmetry, with no other visible/hidden sector couplings. In this case the MSSM soft supersymmetry breaking terms are all

Supersymmetric Model-Building in the Era of LHC Data: From

The simplest version of supersymmetry (SUSY) introduces a partner for each SM particle, resulting in the Minimal Supersymmetric Standard Model (MSSM). The lightest of these is stable and an appealing dark matter candidate, and the extra par-ticle content yields good gauge coupling uni cation. Most model-building, however,

iris.sissa.it

Declaration of Authorship I, Diego GALLEGO, declare that this thesis titled, On the Two-Step Moduli Stabiliza-tion and the work presented in it are my own. I con rm that: Th

Durham E-Theses Supersymmetry Breaking: Models of Gauge

both cases the effects gauge and non-gauge messengers have to combine if a viable spectrum is to be reached.[4] We then finish out study in chapter 6 by considering the semi-direct version of gauge mediation with gauge messengers. As it is known, gaugino masses are screened from messenger interactions, at leading order in the SUSY breaking

Focus point gauge mediation in product group uni cation arXiv

Below the GUT-breaking scale, the messenger couplings become W= XN 2 i=1 2iZ 2i 2i+ XN 3 a=1 3aZ 3a 3a; (6) where 2i and 3a denote the remaining SU(2) L doublet and SU(3) C triplet messengers. Here, we have diagonalized the Yukawa interactions (i.e. the mass matrix of the remaining messenger elds) at leading order without loss of generality. It

INTRODUCTION TO SUPERSYMMETRY

V. Dynamical supersymmetry breaking 2 lectures, if I get to it There is no text covering the contents of this course. Some useful references for its various parts are: 1. Qualitative supersymmetry: E. Witten, Dynamical breaking of supersymmetry, Nucl. Phys. B188 (1981) 513; S. Coleman, The uses of instantons, in The Whys of

Contents

45.7 Supersymmetry Breaking and the MSSM 225 45.8 Another Prediction of SUSY 225 45.9 Supersymmetry and Dark Matter 225 45.10 Supersymmetry and the LHC 226 46 Composite Higgs Models 228 46.1 Introduction 228 46.2 A World without the Higgs 228 46.3 Technicolour 229 46.4 Composite Higgs 229 46.5 Composite Higgs at Colliders 230

Strongly Coupled Semi-Direct Mediation of Supersymmetry Breaking

indirectness of the messengers SUSY breaking interaction. Forthat purpose, we introduce a new mechanism of mediating the SUSY breaking effect to the SUSY standard model, that is, we consider a model of strongly coupled semi-direct gauge mediation where the mass of the mediators are small compared with the dynamical scale in the SUSY breaking

Single Sector Supersymmetry Breaking

The most important example is the use of dynamical SUSY breaking to explain the origin of the SUSY breaking scale. In recent years, large classes of SUSY gauge theories have been discovered that exhibit dynamical SUSY breaking through a variety of different mechanisms [2,3], and realistic models have been built using these theories as building

oaktrust.library.tamu.edu

arXiv:1208.3767v2 [hep-ph] 21 Apr 2013 Prepared for submission to JHEP Top and Bottom Seesaw from Supersymmetric Strong Dynamics Csaba Balazs,a Tianjun Li,b,c,d Fei Wang,e,1 Jin M

Mass Hierarchy and Physics Beyond the Standard Theory

Soft supersymmetry breaking Add all possible breaking terms that preserve the good SUSY behavior =>they should have positive mass dimensions can be generated if SUSY is spontaneously broken in a different sector and mediated to the SM by gauge interactions or gravity msusy ∼ hFi M or hDi M ∼ Λ2 M

20 Supersymmetry - University of Chicago

breaking masses. Electroweak symmetry cannot be broken by hand in a similar way, since this would destroy gauge invariance. Instead, it is broken by the Higgs mechanism, giving rise to masses for the quarks, leptons, and bosons. Supersymmetry requires two Higgs doublets and relates the Higgs self-coupling to gauge couplings:

A microscopic theory of gauge mediation - SLAC

for breaking supersymmetry simultaneously generates a weakly coupled subsector of messengers. This provides a microscopic realization of messenger gauge mediation where the messenger and hidden sector elds are uni ed into a single sector. The UV theory is SQCD with massless and massive quarks plus singlets, and at low energies it

Supersymmetry Breaking in Five and Six Space-Time Dimensions

model gauge group originates via spontaneous symmetry breaking. As pointed out in the early 1980s [5], the minimal supersymmetric standard model (MSSM) allows for the uni - cation of the gauge couplings { in contrast to the standard model without supersymmetry. The extrapolation of the low energy values of the gauge couplings using renormalisation

Contents

scale of around 1016GeV it has one gauge coupling, but at this scale, it gets spontaneously broken down to symmetry group of Standard model. This model induces 24 gauge bosons, which are all massless, but after spontaneous symme-try breaking, 12 bosons become massive, leaving 12 gauge bosons of Standard Model massless.

Theories with Gauge-Mediated Supersymmetry Breaking

Theories with Gauge-Mediated Supersymmetry Breaking G.F. Giudice1 and R. Rattazzi Theory Division, CERN CH-1211 Geneva 23, Switzerland Abstract Theories with gauge-mediated supersymmetry breaking provide an interesting alterna-tive to the scenario in which the soft terms of the low-energy fields are induced by gravity.

Anomaly-induced inflaton decay and gravitino-overproduction

In the dynamical supersymmetry (SUSY) breaking (DSB) scenarios, SUSY is broken as a result of strong dynamics in a gauge theory. The couplings induced by the super-Weyl anomaly makes it unavoidable for the in­ flaton to decay into the hidden gauge bosons and gaug­ inos, which subsequently produce gravitinos. The grav-

Dynamical Supersymmetry Breaking without Messenger Gauge

Dynamical Supersymmetry Breaking without Messenger Gauge Interactions T. Hotta, Izawa K.-I. and T. Yanagida Department of Physics, University of Tokyo Bunkyo-ku, Tokyo 113, Japan June 5, 1996 Abstract We investigate low-energy models of supersymmetry (SUSY) breaking by means of vector-like gauge theories for dynamical SUSY breaking. It is not

arXiv:hep-ph/9612426v2 20 Dec 1996

There are several reasons why communicating supersymmetry breaking via perturbative interactions at a low-energy scale appears to require complicated structure. It is commonly accepted that the ideal scenario would somehow embed the standard model gauge group into a dynamical supersymmetry breaking sector in such a way that standard model particle

Variations on minimal gauge-mediated supersymmetry breaking

Existing models of low energy supersymmetry breaking assume that gauge interactions are the messengers of super-symmetry breaking. This mechanism is referred to as gauge-mediated supersymmetry breaking ~GMSB!. Such models are highly predictive. Indeed, all 106 new parameters of the minimal supersymmetric standard model are typically

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ing. If the mediation of supersymmetry breaking is by Standard Model gauge interactions, the corresponding mass scales are typically low. In the case of the gravity mediation, they are typically at intermediate energy scales. In both cases, a dynamical origin for these values, small in Planck units, is needed.

Aspects of Gauge Mediation at the LHC - KITP Online Talks

In this case the MSSM soft supersymmetry breaking terms are all calculable in terms of simple correlation functions of the hidden sector, even if it is strongly coupled (Meade, Seiberg, Shih). More generally, one adds additional visible/hidden sector interactions, e.g. for µ/Bµ. Matthew Reece Aspects of Gauge Mediation at the LHC

Dynamical supersymmetry breaking and unification of couplings

gauge groups with those of the dynamical supersymmetry breaking (DSB) sector in theories with gauge mediated supersymmetrybreaking. We findconstraints on the DSB gauge group beta function that come from unification of the gauge coupling constants of the two sectors. These constraints are satisfied by a fairly wide class of models. We

arXiv:hep-ph/9712389 v3 7 May 1998

supersymmetry breaking is communicated directly to the composite fields without messenger interactions. The compositeness scale can be any-where between 10 TeV and the Planck scale. These models can naturally solve the supersymmetric flavor problem, and generically predict sfermion mass unification independent from gauge unification

Savas Dimopoulos - Stanford University

Sparticle spectroscopy and electroweak symmetry breaking with gauge-mediated supersymmetry breakingNUCLEAR PHYSICS B Dimopoulos, S., Thomas, S., Wells, J. D. 1997; 488 (1-2): 39-91 Multi-messenger theories of gauge-mediated supersymmetry breakingPHYSICS LETTERS B Dimopoulos, S., Giudice, G. F. 1997; 393 (1-2): 72-78

Strong CP and Problems in Theories with Gauge Mediated

Low energy supersymmetry breaking could be transmitted by gauge interactions from a hidden sector where supersymmetry is broken by nonperturbative dynamics. After the con-struction of viable models of this type [1], many works have been devoted to look for their experimental signatures [2]. These models also have distinctive features in

Gauge Mediation - desy.de

connection with mechanisms for SUSY breaking like dynamical SUSY breaking (DSB). 2 Ordinary Gauge Mediation With the term ordinary gauge mediation we refer to the class of models of gauge-mediated supersymmetry breaking with a messenger sector that are described in the review by Giu-dice and Rattazzi [1]. 2.1 General Structure of GMSB Models

arXiv:hep-ph/9705228v1 5 May 1997

breaking with the structure of direct transmission (that is, without messenger gauge interactions). We obtain models in which the gravitino mass can be set smaller than 1 keV. The existence of such models suggests that low-energy dynamical SUSY breaking with gauge mediation does not necessarily require complicated non-standard cosmology.

INAUGURAL - DISSERTATION

not even present in the theory. The suppression of the gravitational interactions comes from the large radius Rof the extra dimensions. Within this framework gravity becomes as strong as the gauge interactions at energies ˘TeV and therefore can be probed by the LHC [17]. We use the scenario described above as a motivation to revisit the topic

Supersymmetry wi an Inhomo s - IOPB Home

SUSY breaking fields are also dynamic renormalization is due to hidden + MSSM interactions renormalization is due to MSSM interactions Cohen, Roy, Schmaltz [hep-ph/0612100] Meade, Seiberg, Shih [0801.3278]