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Study of the Electroweak Symmetry Breaking Sector for the LHC

2017-06-29 Science
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Release : 2017-06-29
Genre : Science
Kind : eBook
Book Rating : 988/5 ( reviews)

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Book Synopsis Study of the Electroweak Symmetry Breaking Sector for the LHC by : Rafael Delgado López

Download or read book Study of the Electroweak Symmetry Breaking Sector for the LHC written by Rafael Delgado López. This book was released on 2017-06-29. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, we revisit the prospects of a strongly interacting theory for the Electroweak Symmetry Breaking Sector of the Standard Model, after the discovery of a Higgs-like boson at 125GeV. As the LHC constrains new phenomena near the Higgs mass, it is natural to assume that the new scale is of order 1TeV. This mass gap might indicate strongly interacting new physics. This work is of quite general validity and model independence. With only a few parameters at the Lagrangian level, multiple channels (possibly with new physics resonances) are describable, and many BSM theories can be treated. It will be of interest to postgraduate students and researchers, and is accessible to newcomers in the field. Many calculations are given in full detail and there are ample graphical illustrations.

Electroweak Symmetry Breaking And New Physics At The Tev Scale

1997-05-05 Science
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Release : 1997-05-05
Genre : Science
Kind : eBook
Book Rating : 072/5 ( reviews)

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Book Synopsis Electroweak Symmetry Breaking And New Physics At The Tev Scale by : Timothy L Barklow

Download or read book Electroweak Symmetry Breaking And New Physics At The Tev Scale written by Timothy L Barklow. This book was released on 1997-05-05. Available in PDF, EPUB and Kindle. Book excerpt: This is an expanded version of the report by the Electroweak Symmetry Breaking and Beyond the Standard Model Working Group which was contributed to Particle Physics — Perspectives and Opportunities, a report of the Division of Particles and Fields Committee for Long Term Planning. One of the Working Group's primary goals was to study the phenomenology of electroweak symmetry breaking and attempt to quantify the “physics reach” of present and future colliders. Their investigations encompassed the Standard Model — with one doublet of Higgs scalars — and approaches to physics beyond the Standard Model. These include models of low-energy supersymmetry, dynamical electroweak symmetry breaking, and a variety of extensions of the Standard Model with new particles and interactions. The Working Group also considered signals of new physics in precision measurements arising from virtual processes and examined experimental issues associated with the study of electroweak symmetry breaking and the search for new physics at present and future hadron and lepton colliders.This volume represents an important contribution to the efforts being made to advance the frontiers of particle physics.

Electroweak Symmetry And Its Breaking

2023-03-16 Science
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Release : 2023-03-16
Genre : Science
Kind : eBook
Book Rating : 266/5 ( reviews)

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Book Synopsis Electroweak Symmetry And Its Breaking by : Regina Demina

Download or read book Electroweak Symmetry And Its Breaking written by Regina Demina. This book was released on 2023-03-16. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental interactions are mediated by bosonic fields, quanta of which are realized as particles. The properties of these fields typically obey certain symmetry rules. In this book we discuss the symmetry between two types of interactions — electromagnetic, which are familiar to anyone who turned on the electric lights, and weak, which govern the nuclear reactions that fuel the Sun. While there is a symmetry between these two types of interactions, it is broken. The unified theory of electroweak interactions was developed over 50 years ago. The Higgs scalar field named after one of the theorists that proposed it, is believed to be responsible for the breaking of the electroweak symmetry. Yet, it is only now after the discovery of the Higgs boson in 2012 by the LHC experiments, that we can study the mechanism of the electroweak symmetry breaking. This book discusses the theoretical developments that led to the construction of this theory, the discovery and the experimental observations that need to come to fully establish the validity of the model.

An Update on Strong W{sub L}W{sub L} Scattering at the LHC.

1995
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Release : 1995
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Book Synopsis An Update on Strong W{sub L}W{sub L} Scattering at the LHC. by :

Download or read book An Update on Strong W{sub L}W{sub L} Scattering at the LHC. written by . This book was released on 1995. Available in PDF, EPUB and Kindle. Book excerpt: The author summarizes an update on the study for a strongly interacting electroweak symmetry breaking sector via longitudinal vector boson scattering at the 14 TeV Large Hadron Collider. In the update, the decay mode ZZ → ll−?{bar {nu}} and a new vector-resonance signal via q{bar q} → V → W+W−/W{sup {+-}}Z are also included.

Electroweak Symmetry Breaking in the Era of the Higgs Boson Discovery

2014
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Release : 2014
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Book Synopsis Electroweak Symmetry Breaking in the Era of the Higgs Boson Discovery by : Daniele Bertolini (Ph. D.)

Download or read book Electroweak Symmetry Breaking in the Era of the Higgs Boson Discovery written by Daniele Bertolini (Ph. D.). This book was released on 2014. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we study possible deviations from the electroweak symmetry breaking mechanism as predicted by the Standard Model (SM), and we introduce a new framework to analyze hadronic final states at colliders. In the first part, we begin by considering supersymmetric extensions of the SM and by studying the connection between electroweak symmetry breaking and supersymmetry breaking. Contrary to the common lore, we show that a visible dynamics in the Higgs sector can contribute to supersymmetry breaking, as long as soft masses receive contributions also from one or more hidden sectors. A striking feature is the presence of a light pseudo-goldstino in the spectrum. We study potential collider signatures of visible supersymmetry breaking in Higgs and neutralino decays. Then, we move to a study of the Higgs data collected at the Large Hadron Collider (LHC). By using both measurements of the Higgs boson couplings, and limits on Higgs-like states at higher masses, we investigate whether the data support the possibility that the SM Higgs is mixed with another scalar. We consider fits to simplified models and we find that mixing angles with sin 2 6 > 0.2 are disfavored at 95% CL over a scalar mass range 200 - 1000 GeV. In the second part, we propose a new way to define inclusive jet (and subject) based observables at colliders. We introduce a new class of event shapes that characterize the jet-like structure of the event by using only information in the neighborhood of each particle. We show that conventional jet-based observables such as jet multiplicity, summed scalar transverse momentum, and missing transverse momentum can be recovered within this approach. We show that in this framework trimming can be recast as a particle weight assignment, without explicit jet identification. Finally, we comment on potential applications of the method both at trigger and analysis level.

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