H2020Индивидуална стипендия2017–2019

HiPPiE_at_LHC · High Precision PDFs for the precision Era at the Large Hadron Collider

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

Период: 2017-11-01 → 2019-10-31
Финансиране от ЕС: 180 277 €
Участници: 1
Схема: MSCA-IF-EF-ST

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Накратко на български

Вътрешната структура на протоните се изследва чрез подобряване на теоретичните модели за техните сблъсъци в Големия адронен колайдер. По-голямата точност в тези описания помага за по-ефективното откриване на нови, неизвестни досега частици.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

High Precision PDFs for the precision Era at the Large Hadron Collider

Research in fundamental science is driven by the curiosity of humans, to understand the Universe we live in. Despite the absence of an applicative goal, history has shown that when science progresses, society also progresses. An impressive example of all this is CERN, and its current experiments at the Large Hadron Collider (LHC). The technological advancements achieved at CERN have application on our everyday life (from new materials to the world wide web). But this progress is motivated by a single reason: discovering the unknown. LHC looks for new particles beyond the ones that we already know, because we have clear indirect indications that something else must exist. The way it does so is by colliding protons, to focus high energies in a point, thus being able to produce many particles, potentially including new unknown ones. Protons are, however, composite objects, so the description of their interactions requires the knowledge of their internal structure. The HiPPiE@LHC project has the goal of understanding the structure of protons to a higher level of precision, to be able to improve the discovery power of the LHC. This goal is achieved by improving the theoretical description of the fundamental interactions taking place when protons collide, in order to be able to determine with greater precision the information on their structure by comparing theory with experimental data.

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

Цел на проекта

High precision is the next frontier for the Large Hadron Collider (LHC). It requires accurate and precise theoretical predictions. The goal of this project is twofold: establish a statistically solid framework for estimating the uncertainty on theoretical predictions, and producing more precise higher-order parton distribution functions (PDFs).Theoretical predictions are not exact, and carry therefore an uncertainty due to the approximate method (perturbation theory) used to compute physical observables. Assessing this uncertainty is not obvious, and standard techniques are not always reliable and lack of statistical interpretation, limiting their usability. HiPPiE@LHC will overcome these problems by proposing a Bayesian approach to assess theory uncertainties, which will make use of all the information available on the perturbative expansion and will provide a probability distribution for the unknown exact result. The approach will be similar to the Cacciari-Houdeau method, but will contain several conceptual and technical improvements, which will effectively make it more reliable.Then, new PDFs will be fitted from data using higher-order theoretical predictions, mostly based on all-order resummations, and including for the first time theory uncertainties. The computation of all the new ingredients needed to achieve this task will be part of the project. This also include the development of novel techniques (e.g., the extension of threshold resummation to fully differential level). These additions will increase the reliability and quality of the fit. The new PDFs will represent a substantial improvement over previous generations, and will be crucial for achieving higher precision in theoretical predictions.The outcome of this project will be a milestone for the High-Energy Physics community, and will open the door to high precision phenomenology in the next phase of the LHC.

Оригинален текст от CORDIS (на английски).

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