Higgs Theory--A Brief Overview (original) (raw)

The Higgs Boson and its physics: an overview

Indian Journal of Physics, 2023

The Higgs boson plays a central role in the Standard Model, as well as in theories which go beyond it. This article is therefore divided into two parts. The first takes s historical approach and shows how the mass problem entered weak interaction theory from the beginning and how it was solved by invoking the Higgs boson. This is followed by a construction of the Glashow-Salam-Weinberg model, again stressing the role played by the Higgs doublet. This part culminates in the Higgs boson discovery of 2012. The second part first discusses the shortcomings of the Standard Model and then touches upon the major theories which try to improve upon it, mostly with profound consequences on the Higgs sector. This is followed up by short descriptions of a number of popular extensions of the Higgs sector, and culminates in a brief introduction to effective field theory approaches to studying the Higgs sector.

Higgs physics at the Large Hadron Collider

Pramana, 2011

In this talk I shall begin by summarizing the importance of the Higgs physics studies at the Large Hadron Collider (LHC). I shall then give a short description of the pre-LHC constraints on the Higgs mass and the theoretical predictions for the LHC along with a discussion of the current experimental results, ending with prospects in the near future at the LHC. I have added to the writeup, recent experimental results from the LHC which have become available since the time of the workshop. Keywords. Higgs boson; Large Hadron Collider; electroweak symmetry; spin and CP of the Higgs boson PACS Nos 14.80.Bn; 12.15.Ji

Future Directions in Higgs Phenomenology

The search for the weakly-coupled Higgs sector at future colliders consists of three phases: discovery of a Higgs candidate, verification of the Higgs interpretation of the signal, and precision measurements of Higgs sector properties. The discovery of one Higgs boson with Standard Model properties is not sufficient to expose the underlying structure of the electroweak symmetry breaking dynamics. It is critical to search for evidence for a non-minimal Higgs sector and/or new physics associated with electroweak symmetry breaking dynamics.

The Physics of the Higgs-like Boson

EPJ Web of Conferences, 2013

The present knowledge on the Higgs-like boson discovered at the LHC is summarized. The data accumulated so far are consistent with the Standard Model predictions and put interesting constraints on alternative scenarios of electroweak symmetry breaking. The measured couplings to gauge bosons and third-generation fermions indicate that a Higgs particle has indeed been found. More precise data are needed to clarify whether it is the unique Higgs boson of the Standard Model or the first member of a new variety of dynamical (either elementary or composite) fields.

Higgs Physics at the Linear Collider

Advanced Series on Directions in High Energy Physics, 2005

We review the theory of Higgs bosons, with emphasis on the Higgs scalars of the Standard Model and its non-supersymmetric and supersymmetric extensions. After surveying the expected knowledge of Higgs boson physics after the Tevatron and LHC experimental programs, we examine in detail expectations for precision Higgs measurements at a future e + e − linear collider (LC). A comprehensive phenomenological profile can be assembled from LC Higgs studies (both in e + e − and γγ collisions). The Giga-Z option can provide important constraints and consistency checks for the theory of electroweak symmetry breaking.

Introduction to Strong Higgs Sector

A brief introduction to strong Higgs sector i.e. the possibility of breaking electroweak symmetry without an elementary Higgs is given. Constraints from present LEP data are studied and the discovery potential of future colliders investigated.

Theoretical aspects of Higgs physics at the LHC

The European Physical Journal C, 2003

The strategies recently developed to study Higgs boson properties at the LHC are reviewed. It is shown how to obtain model-independent determinations of couplings to fermions and gauge bosons by exploiting different production and decay channels. We consider the case of Weak Boson Fusion Higgs production with H → bb

Kooten, “Higgs Physics at the Linear Collider

2013

Higgs Essay A Review of Higgs Particle Physics

2012

This paper is an overview of Higgs particle physics. This discusses the particle physics behind why the Higgs particle was presumed to exist, some aspects of its detection and how the Higgs particle might be a door into deeper foundations. 1 How the Higgs particle saved physics The reasons for the Higgs particle are often not discussed. It is common to hear the lore that that Higgs field produces the mass of particles. While this is the case, the most important role the Higgs field plays is in rescuing quantum field theory from a complicated problem with massive vector bosons. The weak interactions at low energy are mediated by massive vector bosons. At sufficiently high energy this theory is not causally consistent. The mass is a degree of freedom, or equivalently a longitudinal mode, which is absorbed by the gauge bosons that is massless at higher energy. This means weak interactions at high energy are mediated by massless gauge bosons at high energy. This prevents the theory of w...

New (and Old) Perspectives on Higgs Physics

AIP Conference Proceedings, 2008

Old and new ideas regarding Higgs physics are reviewed. We first summarize the quadratic divergence / hierarchy problem which strongly suggests that the SM Higgs sector will be supplemented by new physics at high scales. We next consider means for delaying the hierarchy problem of the SM Higgs sector to unexpectedly high scales. We then outline the properties of the most ideal Higgs boson. The main advantages of a supersymmetric solution to the high scale problems are summarized and the reasons for preferring the next-to-minimal supersymmetric model over the minimal supersymmetric model in order to achieve an ideal Higgs are emphasized. This leads us to the strongly motivated scenario in which there is a Higgs h with SM-like WW, ZZ couplings and m h ∼ 100 GeV that decays via h → aa with m a < 2m b , where m a > 2m τ is preferred, implying a → τ + τ −. The means for detecting an h → aa → 4τ signal are then discussed. Some final cautionary and concluding remarks are given.

Higgs Theory--A Brief Overview (original) (raw)

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