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We introduce a deconstructed model that incorporates both Higgsless and top-color mechanisms. The model alleviates the typical tension in Higgsless models between obtaining the correct top quark mass and keeping delta-rho small. It does so…

High Energy Physics - Phenomenology · Physics 2017-08-23 R. S. Chivukula , N. D. Christensen , B. Coleppa , E. H. Simmons

We analyze some consequences of grand unification of the third-generation Yukawa couplings, in the context of the minimal supersymmetric standard model. We address two issues: the prediction of the top quark mass, and the generation of the…

High Energy Physics - Phenomenology · Physics 2009-09-25 Riccardo Rattazzi , Uri Sarid , Lawrence J. Hall

Recently a new class of composite Higgs models have been developed which give rise to naturally light Higgs bosons without supersymmetry. Based on the chiral symmetries of ``theory space,'' involving replicated gauge groups and appropriate…

High Energy Physics - Phenomenology · Physics 2009-11-07 R. Sekhar Chivukula , Nick Evans , Elizabeth H. Simmons

Grand gauge-Higgs unification of five dimensional SU(6) gauge theory on an orbifold S^1/Z_2 with localized gauge kinetic terms is discussed. The Standard model (SM) fermions on one of the boundaries and some massive bulk fermions coupling…

High Energy Physics - Phenomenology · Physics 2020-10-28 Nobuhito Maru , Yoshiki Yatagai

A complete set of Higgs and matter superfields is introduced with well-defined SO(10) properties and U(1) \times Z_2 \times Z_2 family charges from which the Higgs and Yukawa superpotentials are constructed. The Higgs fields solve the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Carl H. Albright , S. M. Barr

The most promising MSSM candidates of the heterotic string reveal some distinctive properties. These include gauge-top unification, a specific solution to the mu-problem and mirage pattern for the gaugino masses. The location of the top-…

High Energy Physics - Phenomenology · Physics 2015-06-03 Sven Krippendorf , Hans Peter Nilles , Michael Ratz , Martin Wolfgang Winkler

We find the exchange symmetry between left and right handed top quark in composite Higgs model with partial compositeness is efficient to soften the Higgs potential and reduce fine tuning. This symmetry can keep the Higgs potential in top…

High Energy Physics - Phenomenology · Physics 2020-03-04 Cong-Sen Guan , Teng Ma , Jing Shu

Unification of Gauge and Yukawa sectors of GUTs is obtained by searching for renormalization group invariant relations among the couplings of the both sectors which hold beyond the unification scale. This procedure singled out two…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jisuke Kubo , Myriam Mondragon , George Zoupanos

We consider the possibility that the vacuum energy density of the MSSM (Minimal Supersymmetric Standard Model) flat direction condensate involving the Higgses H_1 and H_2 is responsible for inflation. We also discuss how the finely tuned…

High Energy Physics - Phenomenology · Physics 2015-05-27 Arindam Chatterjee , Anupam Mazumdar

Recently one of the authors proposed a dual theory of a Supersymmetric Standard Model (SSM), in which it is naturally understood that at least one quark (the top quark) should be heavy, i.e., almost the same order as the weak scale, and the…

High Energy Physics - Phenomenology · Physics 2009-10-28 Nobuhiro Maekawa , Tomohiko Takahashi

We introduce a scalar-less anomaly free chiral gauge theory that serves as natural ultraviolet completion of models of fundamental composite (Goldstone) Higgs dynamics. The new theory is able to generate the top mass and furthermore…

High Energy Physics - Phenomenology · Physics 2016-03-23 Giacomo Cacciapaglia , Francesco Sannino

In the high-scale (split) MSSM, the measured Higgs mass sets an upper bound on the supersymmetric scalar mass scale MSUSY around $10^{11}$ ($10^{8}$) GeV, for $\tan\beta$ in the standard range and the central value of the top quark mass…

High Energy Physics - Phenomenology · Physics 2018-09-24 Jae-hyeon Park

Future measurements of primordial non-Gaussianity can reveal cosmologically produced particles with masses of order the inflationary Hubble scale and their interactions with the inflaton, giving us crucial insights into the structure of…

High Energy Physics - Phenomenology · Physics 2018-05-15 Soubhik Kumar , Raman Sundrum

We consider the possibility that the standard model Higgs fields may originate from extra components of higher dimensional gauge fields. Theories of this type considered before have had problems accommodating the standard model fermion…

High Energy Physics - Phenomenology · Physics 2008-11-26 Csaba Csaki , Christophe Grojean , Hitoshi Murayama

Constraints on the two Higgs doublet model are presented, assuming a top mass of 174 $\pm$ 17 GeV. We concentrate primarily on the ``type II'' model, where up--type quarks receive their mass from one Higgs doublet, and down--type quarks…

High Energy Physics - Phenomenology · Physics 2010-11-01 Aaron K. Grant

Composite Higgs models provide an attractive solution to the hierarchy problem. However, many realistic models suffer from tuning problems in the Higgs potential. There are often large contributions from the UV dynamics of the composite…

High Energy Physics - Phenomenology · Physics 2020-10-29 Hsin-Chia Cheng , Yi Chung

We present a model to explain the Standard Model flavor hierarchy. Our model is based on explicit smooth confinement (namely confinement without chiral symmetry breaking in a supersymmetric gauge theory) at an intermediate energy scale,…

High Energy Physics - Phenomenology · Physics 2023-08-04 Yuta Hamada , Juven Wang

A supersymmetric 5D SU(5) grand unification is considered. The SU(5) is broken down to $G_{SM}=SU(3)\times SU(2)\times U(1)$ by the $Z_2\times Z_2'$ assignment of the bulk field(s). The matter fields are located at the fixed point(s). In…

High Energy Physics - Phenomenology · Physics 2014-11-17 Hyung Do Kim , Jihn E. Kim , Hyun Min Lee

We study the implications for bounds on the top quark pole mass m_t in models with low scale supersymmetry following the discovery of the Standard Model-like Higgs boson. In the minimal supersymmetric standard model, we find that m_t >= 164…

High Energy Physics - Phenomenology · Physics 2015-06-18 Ilia Gogoladze , Rizwan Khalid , Shabbar Raza , Qaisar Shafi

We consider an extra dimensional model where the quadratically divergent top loop contribution to the Higgs mass is cancelled by an uncolored heavy "top quirk" charged under a different SU(3) gauge group. The cancellation is enforced by…

High Energy Physics - Phenomenology · Physics 2010-01-08 Haiying Cai , Hsin-Chia Cheng , John Terning
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