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The Gauge-Higgs Legacy of the LHC Run I

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In this paper, the effects of new physics at the electroweak scale were studied using LHC data and the effective Lagrangian expansion (ELG) framework, and the results showed that the triple gauge vertices lead to a significant improvement in the entire set of operators describing Higgs couplings.
Abstract
The effective Lagrangian expansion provides a framework to study effects of new physics at the electroweak scale. To make full use of LHC data in constraining higher-dimensional operators we need to include both the Higgs and the electroweak gauge sector in our study. We first present an analysis of the relevant di-boson production LHC results to update constraints on triple gauge boson couplings. Our bounds are several times stronger than those obtained from LEP data. Next, we show how in combination with Higgs measurements the triple gauge vertices lead to a significant improvement in the entire set of operators, including operators describing Higgs couplings.

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Updated global SMEFT fit to Higgs, diboson and electroweak data

TL;DR: In this article, an updated global fit to precision electroweak data, W + W − measurements at LEP, and Higgs and diboson data from runs 1 and 2 of the LHC in the framework of the Standard Model Effective Field Theory (SMEFT), allowing all coefficients to vary across the combined dataset, and present the results in both the Warsaw and SILH operator bases.
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Higgs Physics at the HL-LHC and HE-LHC

Maria Cepeda, +376 more
TL;DR: The potential reach and opportunities in Higgs physics during the High Luminosity phase of the LHC were summarized in this article, with an expected dataset of pp collisions at 14 TeV, corresponding to an integrated luminosity of 3 ab$^{-1}$.
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A Monte Carlo global analysis of the Standard Model Effective Field Theory : the top quark sector

TL;DR: In this article, the authors present a framework for carrying out global analyses of the SMEFT at dimension-six, based on the Monte Carlo replica method for deriving a faithful estimate of the experimental and theoretical uncertainties.
Journal ArticleDOI

A Global Likelihood for Precision Constraints and Flavour Anomalies

TL;DR: In this paper, a global likelihood function in the space of dimension-six Wilson coefficients in the Standard Model Effective Field Theory is presented, which can serve as a basis either for model-independent fits or for testing dynamical models, in particular models built to address the anomalies in B physics.
Journal ArticleDOI

A global view on the Higgs self-coupling

TL;DR: In this article, the authors show that a global fit exploiting only single-Higgs inclusive data suffers from degeneracies that prevent one from extracting robust bounds on each individual coupling, and they show how the inclusion of double Higgs production via gluon fusion, and the use of differential measure-ments in the associated singleHiggs production channels W H, ZH and ttH, can help to overcome the deficiencies of a global Higgs-couplings fit.
References
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Journal ArticleDOI

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

Georges Aad, +2967 more
- 17 Sep 2012 - 
TL;DR: In this article, a search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7×10−9.
Journal ArticleDOI

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

S. Chatrchyan, +2863 more
- 17 Sep 2012 - 
TL;DR: In this paper, results from searches for the standard model Higgs boson in proton-proton collisions at 7 and 8 TeV in the CMS experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.8 standard deviations.
Journal ArticleDOI

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

TL;DR: MadGraph5 aMC@NLO as discussed by the authors is a computer program capable of handling all these computations, including parton-level fixed order, shower-matched, merged, in a unified framework whose defining features are flexibility, high level of parallelisation and human intervention limited to input physics quantities.
Journal ArticleDOI

PYTHIA 6.4 Physics and Manual

TL;DR: The Pythia program as mentioned in this paper can be used to generate high-energy-physics ''events'' (i.e. sets of outgoing particles produced in the interactions between two incoming particles).
Journal ArticleDOI

An Introduction to PYTHIA 8.2

TL;DR: Pythia 8.2 is the second main release after the complete rewrite from Fortran to C++, and now has reached such a maturity that it offers a complete replacement for most applications, notably for LHC physics studies.
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