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200 papers

Within the framework of the standard model we observe that there is a significant discrepancy between the most precise $Z$ boson decay asymmetry measurement and the limit from direct searches for Higgs boson production. Using methods…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael S. Chanowitz

The status of the triviality bound of the Higgs mass in the Minimal Standard Model is reviewed. It is emphasized that the bound is obtained, in the scalar sector, by limiting cutoff effects on physical processes. Results from several…

High Energy Physics - Lattice · Physics 2009-10-22 Urs M. Heller

The multiple point criticality principle is applied to the pure Standard Model (SM), with a desert up to the Planck scale. We are thereby led to impose the constraint that the effective Higgs potential should have two degenerate minima, one…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. D. Froggatt , H. B. Nielsen , D. J. Smith

The triviality and vacuum stability bounds on the Higgs-boson mass are revisited in the presence of new interactions parameterized in a model-independent way by an effective lagrangian. When the scale of new physics is below 50 TeV the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Bohdan Grzadkowski , Jose Wudka

In focus point supersymmetry, all squarks and sleptons, including those of the third generation, have multi-TeV masses without sacrificing naturalness. We examine the implications of this framework for low energy constraints and the light…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jonathan L. Feng , Konstantin T. Matchev

A local void in the globally Friedmann-Robertson-Walker cosmological model with the critical density ($\Omega_{0}=1$) is studied. The inhomogeneity is described using a Lema\^{\i}tre-Tolman-Bondi solution for a spherically symmetric…

Astrophysics · Physics 2008-02-03 J. W. Moffat , D. C. Tatarski

Motivated by the stability of the electroweak Higgs vacuum we consider the possibility that the Standard Model might work up to large scales between about $10^{10}$ GeV and close to the Planck scale. A plausible scenario is an emergent…

High Energy Physics - Phenomenology · Physics 2024-02-23 Steven D. Bass

Depending on the Higgs-boson and top-quark masses, $M_H$ and $M_t$, the effective potential of the {\bf Standard Model} can develop a non-standard minimum for values of the field much larger than the weak scale. In those cases the standard…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Quirós

In the Minimal Supersymmetric Model (MSSM) and the Next to Minimal Supersymmetric Model [(M+1)SSM], an upper bound on the lightest higgs mass can be calculated. On the other hand, vacuum stability implies a lower limit on the mass of the…

High Energy Physics - Phenomenology · Physics 2009-10-28 Marco A. Diaz , Tonnis A. ter Veldhuis , Thomas J. Weiler

In previous publications we have proposed that Inflation can be realized in a second minimum of the Standard Model Higgs potential at energy scales of about $10^{16}$ GeV, if the minimum is not too deep and if a mechanism which allows a…

High Energy Physics - Phenomenology · Physics 2015-04-21 Alessio Notari

Vacuum stability and metastability imply lower limits on the mass of the higgs boson in the Standard Model (SM). In contrast, we present an improved calculation of an upper limit on the lightest higgs mass in supersymmetric (susy) models,…

High Energy Physics - Phenomenology · Physics 2009-10-28 Marco A. Diaz , Tonnis A. ter Veldhuis , Thomas J. Weiler

Astrophysical observations indicate that the ``Local Universe" has a relatively lower matter density ($\Omega_0$) than the predictions of the standard inflation cosmology and the large-scale motions of galaxies which provide a mean mass…

Astrophysics · Physics 2016-08-30 Xiang-Ping Wu , Zugan Deng , Zhenlong Zou , Li-Zhi Fang , Bo Qin

We show that the SU(3) little Higgs model has a region of parameter space in which electroweak symmetry breaking is natural and in which corrections to precision electroweak observables are sufficiently small. The model is anomaly free,…

High Energy Physics - Phenomenology · Physics 2010-02-03 Martin Schmaltz

The measured Standard Model parameters lie in a range such that the Higgs potential, once extrapolated up to high scales, develops a minimum of negative energy density. This has important cosmological implications. In particular, during…

High Energy Physics - Phenomenology · Physics 2020-05-29 Jacopo Fumagalli , Sébastien Renaux-Petel , John W. Ronayne

We perform a comprehensive statistical analysis of the standard model (SM) with three and four generations using the latest Higgs search results from LHC and Tevatron, the electroweak precision observables (EWPOs) measured at LEP and SLD…

High Energy Physics - Phenomenology · Physics 2013-05-30 Otto Eberhardt , Geoffrey Herbert , Heiko Lacker , Alexander Lenz , Andreas Menzel , Ulrich Nierste , Martin Wiebusch

Imposing the Born rule as a fundamental principle of quantum mechanics would require the existence of normalizable wave functions also for relativistic particles. Indeed, the Fourier transforms of normalized k-space amplitudes yield…

Quantum Physics · Physics 2023-04-19 Joshua G. Fenwick , Rainer Dick

Predictions for the scale of SUSY breaking from the string landscape go back at least a decade to the work of Denef and Douglas on the statistics of flux vacua. The assumption that an assortment of SUSY breaking F and D terms are present in…

High Energy Physics - Phenomenology · Physics 2018-04-04 Howard Baer , Vernon Barger , Hasan Serce , Kuver Sinha

The unification of the Einstein theory of gravity with a conformal invariant version of the standard model for electroweak interaction without the Higgs potential is considered. In this theory, a module of the Higgs field is absorbed by the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 V. N. Pervushin , V. I Smirichinski

The observed Higgs mass indicates that the Standard Model can be valid up to near the Planck scale $M_\text{P}$. Within this framework, it is important to examine how little modification is necessary to fit the recent experimental results…

High Energy Physics - Phenomenology · Physics 2021-01-25 Yuta Hamada , Hikaru Kawai , Yukari Nakanishi , Kin-ya Oda

A theory of special inconstancy, in which some fundamental physical constants such as the fine-structure and gravitational constants may vary, is proposed in pregeometry. In the special theory of inconstancy, the \alpha-G relation of…

General Physics · Physics 2015-04-21 Hidezumi Terazawa