Project description
Boosting the physics reach of LHCb using machine learning
LHCb is a particle physics experiment specialising in the properties and decays of heavy particles containing beauty and charm quarks created in proton–proton collisions at the LHC. In Run 3, LHCb will collect physics events at higher rates thanks to newly installed detectors and a revolutionary software trigger that will enable LHCb to rapidly process signal data. The EU-funded LHCbDFEI project will design full event interpretation algorithms to enhance the trigger performance. A deep neural network will process the low-level information from the detector and infer the heavy-hadron decays that occurred in the event, allowing quick identification of different types of background events and providing further information on parent particles. As a first application of DFEI, a new analysis of the quantum amplitudes of beauty-hadron decays with a tau lepton will be performed, with important consequences for tests of the Standard Model of particle physics.
Objective
The LHCb experiment has shown an excellent performance in precision measurements of beauty- and charm-hadron decays during the LHC runs 1 and 2. Now, it is undertaking its first major upgrade, to face the challenges of a large increase in instantaneous luminosity, that implies augmented event complexity and background levels. This impacts the trigger, which needs to quickly and efficiently identify signals, while facing limits on the disk storage capacity. The proposed project aims at fighting these limitations in a new way for LHCb: performing a Deep Full Event Interpretation (DFEI) during trigger, where a deep neural network processes the low-level information from the detector and infers the heavy-hadron decays that occurred in the event. This allows to quickly identify different types of background and provides enhanced information on the mother particles. As a first application of DFEI, the first angular analysis of semitauonic decays at LHCb is proposed. Semitauonic decays are partially reconstructed in LHCb, due to the presence of neutrinos in the final state. This leads to high levels of backgrounds, hard to separate from the signal, which makes them a perfect validation bench for the power of DFEI. From a physics perspective, the recently-observed flavour anomalies defy the concept of Lepton Universality of the Standard Model (SM), and point towards potential beyond-the-SM effects in semitauonic B decays. The complementary aim of this project is to perform the first LHCb angular analysis of both B0 -> D+ tau- nu and B0 -> D*+ tau- nu decays, where D*+ -> D+ pi0 and tau- -> mu- nu nu. This analysis will provide crucial information to discriminate between different new models proposed to explain the anomalies. The ambitious projects in this proposal are solidly based on my experience with semitauonic decays, angular analyses and the creation of new software tools, as well as the broad experience of the host group in event reconstruction and data analysis.
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 computer and information sciences data science
- natural sciences physical sciences theoretical physics particle physics neutrinos
- natural sciences computer and information sciences software
- natural sciences physical sciences theoretical physics particle physics leptons
- natural sciences computer and information sciences artificial intelligence computational intelligence
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
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 - Marie Skłodowska-Curie Individual Fellowships (IF)
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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-2019
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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.
20126 Milano
Italy
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.