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It is possible to construct models based on warped extra dimensions in which electroweak symmetry breaking takes place without the introduction of any Higgs fields. This breaking can occur through the judiciuous choice of boundary…

High Energy Physics - Phenomenology · Physics 2007-05-23 Thomas G. Rizzo

We present a model of Cosmological Electroweak Symmetry Breaking (CEWSB), where a Higgs-like field and a cosmological background of weak boson gauge fields interact with gravity to realize the epoch of cosmic inflation, which is then…

High Energy Physics - Phenomenology · Physics 2023-06-21 Stephon Alexander

We point out that it is possible to associate the electroweak Higgs boson with the pseudo-Goldstone boson of broken scale invariance, thus resolving the hierarchy problem in a technically natural way. We illustrate this idea with two…

High Energy Physics - Phenomenology · Physics 2008-11-26 Robert Foot , Archil Kobakhidze , Raymond R. Volkas

The Higgs boson was postulated in 1964, and phenomenological studies of its possible production and decays started in the early 1970s, followed by studies of its possible production in e+ e-, pbar p and pp collisions, in particular. Until…

High Energy Physics - Phenomenology · Physics 2012-01-31 John Ellis , Mary K. Gaillard , Dimitri V. Nanopoulos

Nobody knows exactly what kind of Higgs physics will be unveiled when the Large Hadron Collider is turned on. There could be one Standard Model Higgs boson or five Higgs bosons as is the case in two-Higgs-doublet models; there could be more…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. Drollinger

The need to understand physics of electroweak symmetry breaking is reviewed. An electron positron linear collider will play crucial roles in that respect. It is discussed how the LHC and a linear collider need each other to understand…

High Energy Physics - Experiment · Physics 2007-05-23 Hitoshi Murayama

Since the discovery of the Higgs boson in 2012 by the ATLAS and CMS Collaborations a lot of progress has been made in verifying the nature of this new bosonic particle. Still, questions remain as to whether this new particle is the standard…

High Energy Physics - Experiment · Physics 2024-06-11 Torben Lange

We outline issues examined and progress made by the Light Higgs Snowmass 1996 working group regarding discovering Higgs bosons and measuring their detailed properties. We focused primarily on what could be learned at LEP2, the Tevatron…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. F. Gunion , L. Poggioli , R. Van Kooten

The situation in particle physics after the discovery of the Higgs boson is discussed. Is the Standard Model complete? Are there still mysteries which have no answer? Answering these questions we consider the Higgs sector, the neutrino…

High Energy Physics - Phenomenology · Physics 2015-06-19 Dmitry Kazakov

The basic ingredients of the Spontaneous Symmetry Breaking Phenomenon and of the Higgs Mechanism are reviewed in these lectures of pedagogical character. Some relevant topics related with the breaking $\gs \rightarrow U(1)_{\rm em}$ are…

High Energy Physics - Phenomenology · Physics 2009-09-25 Maria J. Herrero

The mechanism of radiative electroweak symmetry breaking occurs through loop corrections, and unlike conventional symmetry breaking where the Higgs mass is a parameter, the radiatively-generated Higgs mass is dynamically predicted. Pade…

High Energy Physics - Phenomenology · Physics 2013-08-22 T. G. Steele , Zhi-Wei Wang

We examine the Higgs mass parameters and electroweak symmetry breaking in supersymmetric orbifold field theories in which the 4-dimensional Higgs fields originate from higher-dimensional gauge supermultiplets. It is noted that such…

High Energy Physics - Phenomenology · Physics 2009-11-10 Kiwoon Choi , Naoyuki Haba , Kwang-Sik Jeong , Ken-ichi Okumura , Yasuhiro Shimizu , Masahiro Yamaguchi

We study the dynamics of electroweak symmetry-breaking in an extension of the Standard Model where the Higgs sector is augmented by the addition of a real (Y = 0) isospin triplet. We show that this scenario exhibits a novel, two-step…

High Energy Physics - Phenomenology · Physics 2014-04-16 Hiren H. Patel , Michael J. Ramsey-Musolf

The breaking of the electroweak symmetry, and origin of the associated ``weak scale,'' may be due to a new strong interaction. Theoretical developments over the past decade have led to viable models and mechanisms that are consistent with…

High Energy Physics - Phenomenology · Physics 2014-11-17 Christopher T. Hill , Elizabeth H. Simmons

For the Higgs boson mass of $\sim 220$ GeV expected to arise from radiative electroweak symmetry breaking, we find the same lowest-order expressions as would be obtained from conventional electroweak symmetry breaking, given the same Higgs…

High Energy Physics - Phenomenology · Physics 2009-11-11 F. A. Chishtie , V. Elias , T. G. Steele

The Standard Model of particle physics has a number of asymmetries suggestive of a more fundamental theory, where the symmetries are restored. If the symmetry breaking scale is the electroweak scale, new Higgs bosons beyond that of the…

High Energy Physics - Experiment · Physics 2019-08-14 Chris Hays

The present text is an updated version of an earlier author's book on the electroweak theory (published originally in 2002, ISBN 80-246-0639-9). It reflects the ultimate completion of the standard model by the long-awaited discovery of the…

High Energy Physics - Phenomenology · Physics 2022-10-11 Jiri Horejsi

Repeated symmetry-breaking and restoration phase transitions occur as one traverses the parameter space of interactions competing to align the vacuum. This phenomenon, augmented with a topcolor-like interaction, can make a composite Higgs…

High Energy Physics - Phenomenology · Physics 2010-04-05 Kenneth Lane , Adam Martin

We present a new Little Higgs model, motivated by the deconstruction of a five-dimensional gauge-Higgs model. The approximate global symmetry is $SO(5)_0\times SO(5)_1$, breaking to $SO(5)$, with a gauged subgroup of $[SU(2)_{0L}\times…

High Energy Physics - Phenomenology · Physics 2014-11-20 Roshan Foadi , James T. Laverty , Carl R. Schmidt , Jiang-Hao Yu

We briefly review the limits on new interactions implied by electroweak precision data. Special attention is payed to the bounds on the Higgs boson mass. We also comment on the required cancellation among the new contributions to precisely…

High Energy Physics - Phenomenology · Physics 2015-05-28 F. del Aguila , J. de Blas