H2020Индивидуална стипендия2017–2019

HiggsEFTatNLO · Precise Higgs Properties in the LHC Era

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2017-09-01 → 2019-08-31
Финансиране от ЕС: 160 800 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Взаимодействията на Хигс бозона, топ кварка и електрослабите бозони се анализират чрез математически модели, наречени ефективни полеви теории. Това помага да се разбере как елементарните частици придобиват маса и дали съществува физика извън познатия Стандартен модел.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Precise Higgs Properties in the LHC Era

The most recent update of the European Strategy for Particle Physics has identified the study of the Higgs boson at the LHC in order to test the validity of the Standard Model (SM) as a top priority. The SM offers only a parametrisation for Electroweak (EW) symmetry breaking (EWSB), the mechanism by which elementary particles acquire their mass, with no underlying explanation for its origin. This remains a key, unanswered question at the frontier of particle physics. The road towards understanding EWSB and its relation to new physics lies in the precise study of the interactions of the SM’s most massive particles: the Higgs, EW gauge bosons and the top quark. The most general, model-independent approach is to interpret measurements using Effective Field Theory (EFT). This supplements the SM with all possible new interactions consistent with its symmetries, in a controlled energy expansion with a well-defined matching procedure that maps models of heavy NP to the operator Wilson coefficients. The proposal develops a strategy to incorporate recent developments in higher order calculations for effective field theory (EFT) into global fits to high energy collider data with a particular focus on, though not limited to, Higgs physics at the LHC. I investigate the incorporation of Quantum Chromo Dynamics (QCD) corrections interfaced with parton shower and hadronisation along with the effects of renormalisation group mixing of the Wilson coefficients. I will deliver a software package for efficient translation between different EFT descriptions, providing both a connection to other high energy physics tools for EFT, a framework for the analysis and interpretation of the global fits and an implementation of operator mixing within this framework. These elements will combine to extract maximum information from existing collider data in terms of limits on EFT coefficients and their interpretations in the context of UV models, paving the way for the study of EFT at the LHC and future colliders.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The observation of the Higgs boson at the LHC in 2012 was a defining moment for particle physics in the 21st century. As a result of this groundbreaking discovery, one of the top priorities of the European Strategy for Particle Physics is a programme to ""measure this particle’s properties with the highest possible precision"", in order to uncover the nature of electroweak symmetry breaking. The central role of the Higgs boson in this phenomenon, for which we have no dynamical explanation, means that many questions can be answered about physics beyond the Standard Model through the study of this particle at colliders. Effective Field Theory is the most general way in which departures from SM expectations are parametrised and forms a core part of the LHC physics programme. In this proposal, I develop a strategy to incorporate recent developments in higher order calculations for EFT into global fits to high energy collider data with a particular focus on, though not limited to, Higgs physics at the LHC. I investigate the incorporation of Quantum Chromo Dynamics corrections interfaced with parton shower and hadronisation along with the effects of renormalisation group mixing of the Wilson coefficients. I will deliver a software package for efficient translation between different EFT descriptions, providing both a connection to other high energy physics tools for EFT, a framework for the analysis and interpretation of the global fits and an implementation of operator mixing within this framework. These elements will combine to extract maximum information from existing collider data in terms of limits on EFT coefficients and their interpretations in the context of UV models, paving the way for the study of EFT at the LHC and future colliders.""

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITE CATHOLIQUE DE LOUVAIN · LOUVAIN LA NEUVEКоординаторБелгия