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We present a classically scale-invariant model where the dark matter, neutrino and electroweak mass scales are dynamically generated from dimensionless couplings. The Standard Model gauge sector is extended by a dark $SU(2)_X$ gauge…

High Energy Physics - Phenomenology · Physics 2016-03-29 Alexandros Karam , Kyriakos Tamvakis

In this work we study a classically scale-invariant extension of the Standard Model in which the dark matter and electroweak scales are generated through the Coleman-Weinberg mechanism. The extra $SU(3)_X$ gauge factor gets completely…

High Energy Physics - Phenomenology · Physics 2016-10-07 Alexandros Karam , Kyriakos Tamvakis

We consider a classically scale invariant version of the Standard Model, extended by an extra dark $SU(2)_X$ gauge group. Apart from the dark gauge bosons and a dark scalar doublet which is coupled to the Standard Model Higgs through a…

High Energy Physics - Phenomenology · Physics 2016-02-03 Alexandros Karam , Kyriakos Tamvakis

We propose a model of a confining dark sector, dark technicolor, that communicates with the Standard Model through the Higgs portal. In this model electroweak symmetry breaking and dark matter share a common origin, and the electroweak…

High Energy Physics - Phenomenology · Physics 2014-05-19 Matti Heikinheimo , Antonio Racioppi , Martti Raidal , Christian Spethmann , Kimmo Tuominen

We propose a classically scale invariant extension of the Standard Model where the electroweak symmetry breaking and the mass of the Dark Matter particle come from the common scale. We introduce $U(1)_X$ gauge symmetry and $X$-charged…

High Energy Physics - Phenomenology · Physics 2014-03-28 Branimir Radovcic , Sanjin Benic

We study a classically scale-invariant model in which strong dynamics in a dark sector sets the scale of electroweak symmetry breaking. Our model is distinct from others of this type that have appeared in the recent literature. We show that…

High Energy Physics - Phenomenology · Physics 2015-11-24 Christopher D. Carone , Raymundo Ramos

We construct a minimal viable extension of the standard model (SM) with classical scale symmetry. Its scalar sector contains a complex singlet in addition to the SM Higgs doublet. The scale-invariant and CP-symmetric Higgs potential…

High Energy Physics - Phenomenology · Physics 2013-11-12 Arsham Farzinnia , Hong-Jian He , Jing Ren

We consider a model where two new scalars are introduced in the standard model, assuming classical scale invariance. In this model the scale invariance is broken by quantum corrections and one of the new scalars acquires non-zero vacuum…

High Energy Physics - Phenomenology · Physics 2015-06-03 Koji Ishiwata

Classical scale invariance is one of the possible solutions to explain the origin of the electroweak scale. The simplest extension is the classically scale-invariant standard model augmented by a multiplet of gauge singlet real scalar. In…

High Energy Physics - Phenomenology · Physics 2016-11-01 Kazuhiro Endo , Koji Ishiwata

We investigate a model with two real scalar fields that minimally generates exponentially different scales in an analog of the Coleman-Weinberg mechanism. The classical scale invariance -- the absence of dimensionful parameters in the…

High Energy Physics - Phenomenology · Physics 2020-12-10 Yuta Hamada , Hikaru Kawai , Kin-ya Oda , Kei Yagyu

We study a classically scale-invariant model with an electroweak singlet scalar mediator together with a scalar dark matter multiplet of global $O(N)$ symmetry. Our most general conformally invariant scalar potential generates the…

High Energy Physics - Phenomenology · Physics 2019-09-09 Dong-Won Jung , Jungil Lee , Soo-hyeon Nam

We consider a minimal classically scale-invariant extension of the Standard Model. In this theory, the Higgs mechanism is triggered and the electroweak symmetry breaking is generated radiatively by the Coleman-Weinberg sector which is…

High Energy Physics - Phenomenology · Physics 2015-06-17 Valentin V. Khoze

There are a lot of works within a class of classically scale invariant model, which is motivated by solving the gauge hierarchy problem. In this context, the Higgs mass vanishes at the UV scale due to the classically scale invariance, and…

High Energy Physics - Phenomenology · Physics 2016-02-16 Naoyuki Haba , Hiroyuki Ishida , Ryo Takahashi , Yuya Yamaguchi

We study classically scale invariant models in which the Standard Model Higgs mass term is replaced in the Lagrangian by a Higgs portal coupling to a complex scalar field of a dark sector. We focus on models that are weakly coupled with the…

High Energy Physics - Phenomenology · Physics 2015-06-22 Wolfgang Altmannshofer , William A. Bardeen , Martin Bauer , Marcela Carena , Joseph D. Lykken

The inert doublet model (IDM) is a minimal extension of the Standard Model (SM) that can account for the dark matter in the universe. Naturalness arguments motivate us to study whether the model can be embedded into a theory with…

High Energy Physics - Phenomenology · Physics 2015-09-29 Alexis D. Plascencia

Having discovered a candidate for the final piece of the Standard Model, the Higgs boson, the question remains why its vacuum expectation value and its mass are so much smaller than the Planck scale (or any other high scale of new physics).…

High Energy Physics - Phenomenology · Physics 2015-06-12 Christoph Englert , Joerg Jaeckel , Valentin V. Khoze , Michael Spannowsky

We propose a model of Dark Supersymmetry, where a supersymmetric dark sector is coupled to the classically scale invariant non-supersymmetric Standard Model through the Higgs portal. The dark sector contains a mass scale that is protected…

High Energy Physics - Phenomenology · Physics 2013-09-10 Matti Heikinheimo , Antonio Racioppi , Martti Raidal , Christian Spethmann , Kimmo Tuominen

We consider a coupling of dilaton gravity to the classically scale-invariant B-L extended standard model which has been recently proposed as a phenomenologically viable model realizing the Coleman-Weinberg mechanism of breakdown of the…

High Energy Physics - Phenomenology · Physics 2013-04-03 Ichiro Oda

In the standard model, the weak scale is the only parameter with mass dimensions. This means that the standard model itself can not explain the origin of the weak scale. On the other hand, from the results of recent accelerator experiments,…

High Energy Physics - Theory · Physics 2020-03-18 Junichi Haruna , Hikaru Kawai

Scale invariance may be a classical symmetry which is broken radiatively. This provides a simple way to stabilise the scale of electroweak symmetry breaking against radiative corrections. But for such a theory to be fully realistic, it must…

High Energy Physics - Phenomenology · Physics 2014-11-21 Robert Foot , Archil Kobakhidze , Raymond R. Volkas
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