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We emphasize that the electroweak interactions without a Higgs boson are very similar to quantum general relativity. The Higgs field could just be a dressing field and might not exist as a propagating particle. In that interpretation, the…

High Energy Physics - Phenomenology · Physics 2011-07-19 Xavier Calmet

Recently, a new mechanism to generate a naturally small electroweak scale has been proposed. It exploits the coupling of the Higgs to an axion-like field and a long era in the early universe where the axion unchains a dynamical screening of…

High Energy Physics - Phenomenology · Physics 2015-12-23 J. R. Espinosa , C. Grojean , G. Panico , A. Pomarol , O. Pujolàs , G. Servant

In the present work it is shown that some specific double Higgs like mechanisms may have interesting cosmological applications. A hidden scenario which cast long lived super heavy particles together with an extremely light particle $a$ with…

High Energy Physics - Theory · Physics 2016-07-29 Osvaldo P. Santillán , Luciano Gabbanelli

The fundamental Higgs doublet may be replaced in the Standard Model by certain non-perturbative four-quark interactions, whose effect is to induce a composite Higgs sector responsible for electroweak symmetry breaking. A simple composite…

High Energy Physics - Phenomenology · Physics 2007-05-23 Bogdan A. Dobrescu

We consider an ultra-light scalar coupled to the Higgs in the presence of heavier new physics. In the electroweak broken phase the Higgs gives a tree-level contribution to the light-scalar potential, while new physics contributes at loop…

High Energy Physics - Phenomenology · Physics 2020-10-12 Alessandro Strumia , Daniele Teresi

In principle a minimal extension of the standard model of Particle Physics, the two Higgs doublet model, can be invoked to explain the scalar field responsible of dark energy. The two doublets are in general mixed. After diagonalization,…

General Physics · Physics 2017-06-12 Muhammad Usman , Asghar Qadir

First, we describe the construction of a new type of gravity-matter models based on the formalism of non-Riemannian space-time volume forms - alternative generally covariant integration measure densities (volume elements) defined in terms…

General Relativity and Quantum Cosmology · Physics 2017-12-29 Eduardo Guendelman , Emil Nissimov , Svetlana Pacheva

Despite the fact that dark matter constitutes one of the cornerstones of the standard cosmological paradigm, its existence has so far only been inferred from astronomical observations and its microscopic nature remains elusive. Theoretical…

High Energy Physics - Phenomenology · Physics 2022-11-28 Spyros Argyropoulos , Oleg Brandt , Ulrich Haisch

The basic concepts, principles and statements of the electroweak and the quark-gluon theories and the theory of gravitation are deduced from properties of the point-like events probabilities.Higgs, strings, Dark Energy and Dark Matter are…

General Physics · Physics 2011-05-20 G. A. Quznetsov

We consider the astrophysical bounds on a new form of dark matter, the so called Gravity-mediated Dark Matter. In this scenario, dark matter communicates with us through a mediator sector composed of gravitational resonances, namely a new…

High Energy Physics - Phenomenology · Physics 2015-06-18 Hyun Min Lee , Myeonghun Park , Veronica Sanz

Torsion is a metric-independent component of gravitation, which may provide a more general geometry than the one taking place within general relativity. On the other hand torsion could lead to interesting phenomenology in both particle…

High Energy Physics - Phenomenology · Physics 2017-06-07 Alexander S. Belyaev , Ilya L. Shapiro , Marc C. Thomas

The present experimental and theoretical knowledge of the physics of electroweak symmetry breaking is reviewed. Data still favor a light Higgs boson, of a kind that can be comfortably accommodated in the Standard Model or in its Minimal…

High Energy Physics - Phenomenology · Physics 2009-11-07 Fabio Zwirner

We extend the standard model by three types of inert fields including Majorana fermion singlets/triplets, real Higgs singlets/triplets and leptonic Higgs doublets. In the presence of a softly broken lepton number and an exactly conserved…

High Energy Physics - Phenomenology · Physics 2016-09-07 Wen-Bin Lu , Pei-Hong Gu

The spontaneous symmetry breaking theory of gravity is examined, assuming that the vacuum expectation value of the standard model Higgs is also responsible for the generation of the Planck mass. In this model the physical Higgs couples only…

High Energy Physics - Theory · Physics 2007-05-23 J. J. van der Bij

We investigate the possibility that a massive weakly interacting fermion simultaneously provides for a dominant component of the dark matter relic density and an invisible decay width of the Higgs boson at the LHC. As a concrete model…

High Energy Physics - Phenomenology · Physics 2015-06-04 Matti Heikinheimo , Kimmo Tuominen , Jussi Virkajarvi

We develop a phenomenological formalism for mixing effects between the Standard Model and hidden-sector fields, motivated by dark matter in the Universe as well as string theories. The scheme includes multiple Higgs-portal interactions in…

High Energy Physics - Phenomenology · Physics 2015-06-17 S. Y. Choi , C. Englert , P. M. Zerwas

In spite or the large astronomical evidence for its existence, the nature of dark matter remains enigmatic. Particles that interact only, or almost only, gravitationally, in particular with masses around the Planck mass -- the fundamental…

General Relativity and Quantum Cosmology · Physics 2024-09-30 Alejandro Perez , Carlo Rovelli , Marios Christodoulou

We introduce an oscillating scalar field coupled to the Higgs that can account for all dark matter in the Universe. Due to an underlying scale invariance of this model, the dark scalar only acquires mass after the electroweak phase…

High Energy Physics - Phenomenology · Physics 2019-12-02 Catarina Cosme

We reanalyze the effective field theory approach for the scenario in which the particles that account for the dark matter (DM) in the universe are vector states that interact only or mainly through the Standard Model-like Higgs boson…

High Energy Physics - Phenomenology · Physics 2020-04-22 Giorgio Arcadi , Abdelhak Djouadi , Marumi Kado

Motivated by the see-saw mechanism for neutrinos which naturally generates small neutrino masses, we explore how a small GUT-scale mixing between the Standard Model Higgs and an otherwise massless hidden sector scalar can naturally generate…

High Energy Physics - Phenomenology · Physics 2015-06-16 Lawrence M. Krauss , James B. Dent
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