Project description
Light bosons from Higgs boson decays could hint at new physics
The Standard Model is one of the most important theories in physics, encapsulating understanding of all the material that makes up the Universe. However, several fundamental questions such as the unexplained nature of dark matter and the puzzle of the fermion mass hierarchy are driving physicists to consider theories that include a few extra particles. Two of these models are the Two Higgs Doublet Model and the Next-to-Minimal Supersymmetric Standard Model, which predict the existence of light bosons. Such bosons are expected to be produced in the decays of the observed Higgs boson, either in pairs or in association with a Z boson. The latter decay will be the focus of the LightBosons project, which was funded by the Marie Skłodowska-Curie Actions programme.
Objective
The observation and characterisation of the Higgs boson represents the culmination of over forty years of experimental and theoretical progress, cementing the Standard Model (SM) as the most successful fundamental physical theory to date. However, many open questions still remain which can only be addressed with the new physics predicted by many beyond the SM (BSM) theories. Many such theories, such as two Higgs doublet models and the next Next-to-Minimal Supersymmetric Standard Model, also predict new light bosons or an extended Higgs sector. The observation of the Higgs boson opens a new window to search for such new particles, denoted a. This project aims to observe the production of new light hadronically decaying bosons in the Higgs boson decays h->Za, focusing on h->Za->ll+hadrons final states. This is breaking new ground as the h-> Za channel is entirely uncharted territory, only recently proposed, which will probe large parts of the currently allowed 2HDM parameter space. These searches have been out-of-reach to-date due to the challenge of reconstructing low-mass boosted hadronic objects. The exploitation of these channels will require significant innovations such as the development of new reconstruction techniques for boosted low mass hadronic resonances. Looking to the future the upgrade of the ATLAS Inner Tracker is of paramount importance to fully exploit the physics potential of this project with the High Luminosity LHC. The results of this project will represent an important step towards understanding the extent of the Higgs sector or lead to a revolutionary discovery, the first observation of BSM physics at the LHC.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences theoretical physics particle physics z bosons
- natural sciences physical sciences astronomy astrophysics dark matter
- natural sciences physical sciences theoretical physics particle physics higgs bosons
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2018
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
B15 2TT Birmingham
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.