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It is studied that `no-scale' model makes hierarchy between scalar top mass and Z boson mass naturally. The supersymmetry breaking parameters are constrained by flavor changing neutral currents in minimal supersymmetric standard model. One…

High Energy Physics - Phenomenology · Physics 2016-09-06 Yuichi Chikira , Yukihiro Mimura

While in first and second quantization the fundamental operators are respectively coordinates and fields (functions), an extension of quantum field theory can be achieved if the usual pair of conjugate momenta is represented by functionals.…

High Energy Physics - Phenomenology · Physics 2007-05-23 Francesco Caravaglios

Higgs inflation has received a remarkable attention in the last few years due to its simplicity and predictive power. The key point of this model is the nonminimal coupling to gravity in unitary gauge. As such, this theory is in fact a…

General Relativity and Quantum Cosmology · Physics 2014-08-27 Sandrine Schlogel , Massimiliano Rinaldi , Francois Staelens , Andre Fuzfa

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

A hierarchically small weak scale does not generally coincide with enhanced symmetry, but it may still be exceptional with respect to vacuum energy. By analyzing the classical vacuum energy as a function of parameters such as the Higgs…

High Energy Physics - Phenomenology · Physics 2019-04-09 Clifford Cheung , Prashant Saraswat

A quantum field theory formalism is reviewed that leads to a self-consistent, finite quantum gravity, Yang-Mills and Higgs theory, which is unitary and gauge invariant to all orders of perturbation theory. The gauge hierarchy problem is…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. W. Moffat

The new interpretation of Mach's principle of mass of a particle being a measure of the interactions of this particle with all other gravitating particles inside its causal spheres is introduced. It is shown that within some alternative…

High Energy Physics - Theory · Physics 2008-11-26 Merab Gogberashvili

Both parameters in the Higgs field's potential, its mass and quartic coupling, appear fine-tuned to near-critical values, which gives rise to the hierarchy problem and the metastability of the electroweak vacuum. Whereas such behavior…

High Energy Physics - Phenomenology · Physics 2024-10-16 Thomas Steingasser , David I. Kaiser

In the Standard Model of particle physics, the mass of the Higgs particle can be linked to the scale at which the Standard Model breaks down due to a Landau pole/triviality problem: for a Higgs mass somewhat higher than the measured value,…

General Relativity and Quantum Cosmology · Physics 2023-05-15 Gustavo P. de Brito , Astrid Eichhorn , Ludivine Fausten

We introduce a new approach to the Higgs naturalness problem, where the value of the Higgs mass is tied to cosmic stability and the possibility of a large observable Universe. The Higgs mixes with the dilaton of a CFT sector whose true…

High Energy Physics - Phenomenology · Physics 2021-03-10 Csaba Csaki , Raffaele Tito D'Agnolo , Michael Geller , Ameen Ismail

Scale invariance supplemented by the requirement of the absence of new heavy particles may play an important role in addressing the hierarchy problem. We discuss how the Standard Model may become scale invariant at the quantum level above a…

High Energy Physics - Phenomenology · Physics 2019-06-14 Mikhail Shaposhnikov , Kengo Shimada

Sensitivity to the square of the cutoff scale of quantum corrections of the Higgs boson mass self-energy has led many authors to conclude that the Higgs theory suffers from a naturalness or fine-tuning problem. However, speculative new…

High Energy Physics - Phenomenology · Physics 2016-03-22 James D. Wells

It is shown that gravity can be incorporated into the Standard Model (SM) in a way solving the hierarchy problem. For this, the SM effective action in flat spacetime is adapted to curved spacetime via not only the general covariance but…

High Energy Physics - Phenomenology · Physics 2017-03-17 Durmus Demir

The Higgs field is a central point of the Standard Model supplying masses to other fields through the symmetry breaking mechanism. However, it is associated with an elementary particle which is not yet discovered experimentally. In this…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ruslan Sharipov

We present a cosmological solution to the electroweak hierarchy problem. After discussing general features of cosmological approaches to naturalness, we extend the Standard Model with two light scalars very weakly coupled to the Higgs and…

High Energy Physics - Phenomenology · Physics 2022-02-08 Raffaele Tito D'Agnolo , Daniele Teresi

The standard approach to Higgs mechanism is based on the existence of unitary gauge but, unfortunately, it does not come from a coordinate change in the configuration space of the initial model and actually defines a new dynamical system.…

General Physics · Physics 2007-05-23 Assen Kyuldjiev

We consider a conformal model involving two real scalar fields in which the conformal symmetry is broken by a soft mechanism and is not anomalous. One of these scalar fields is representative of the standard model Higgs. The model predicts…

High Energy Physics - Phenomenology · Physics 2015-12-02 Pankaj Jain , Gopal Kashyap , Subhadip Mitra

We discuss a possible scenario to solve the hierarchy problem, in which 4-dimensional bosonic fields with all possible integer spins, graviton, gauge boson and Higgs are unified in a framework of a gravity theory with extra dimensions. The…

High Energy Physics - Phenomenology · Physics 2009-11-10 K. Hasegawa , C. S. Lim , Nobuhito Maru

I am considering Veltman's "The Infrared - Ultraviolet Connection" addressing the issue of quadratic divergences and the related huge radiative correction predicted by the electroweak Standard Model (SM) in the relationship between the bare…

High Energy Physics - Phenomenology · Physics 2021-07-07 Fred Jegerlehner

Weak-scale supersymmetry is a well motivated, if speculative, theory beyond the Standard Model of particle physics. It solves the thorny issue of the Higgs mass, namely: how can it be stable to quantum corrections, when they are expected to…

High Energy Physics - Phenomenology · Physics 2015-06-18 B. C. Allanach