Co-financiado por:


Nome
THbridgeEXP-II_A ponte entre Teoria e Experiência: Fenomenologia de Colisionadores (II)
Código
CERN/FIS-PAR/0032/2021
Entidade Beneficiária
LIP - Laboratório de Instrumentação e Física Experimental de Partículas
Sumário do Projecto
The exceptional joint performance of the LHC and its associated experiments during Runs 1 and 2 has delivered unprecedented volumes of data for all explored collisions systems: proton-proton, nucleus-nucleus (Pb-Pb, complemented by a short Xe-Xe run), and proton-nucleus (Pb). These data have led to major achievements including the discovery of the Higgs boson, access to the Yukawa sector of the Standard Model, discovery of collective heavy-ion like behaviour in high multiplicity proton-nucleus and proton-proton collisions, and first steps towards full characterization of the quark-gluon plasma (QGP) produced in nucleus-nucleus collisions. The unleashing of the immense physics potential of existing and forthcoming data sits at the core of the mission of LIP’s Phenomenology Group. The Group was founded in early 2018 as an aggregation of phenomenological research activitiesacross LIP and has since successfully pursued a sustained growth strategy that this project will consolidate further. While fully aligned with LIP’s overall strategic objectives and operating in synergy with the experimental groups and Big Data Competence Centre, the group has an independent research programme aimed at high impact and visibility contributions. The proposed research is organized into two complementary lines (tasks) both targeted at augmenting the physics potential of LHC and future colliders data with particular emphasis on LHC Run 3 data: 1. Exploration of QCD Here we address the need, driven by the experimental precision achieved by LHC experiments, for key observables to be computed at the NNLO in the strong coupling. The planned further development of the parton-level generator NNLOJET will enable new beyond the state of the art physics analysis at the LHC. We will also continue our QCD-based studies of quarkonium production and polarization, through rigorous comparisons between the most precise experimental results from the LHC and state-of-the-art theory computations. Further, we will continue to pursue our efforts towards tagging strongly modified jets and accessing the time evolution of the QGP produced in nucleus-nucleus collisions at the LHC, including those of nuclei substantially lighter than Pb, by studying modifications induced on jets by the QGP they traverse. Here, the recourse of innovative Machine Learning techniques plays a leading role. 2. New Physics searches Here the main focus will be on Composite Higgs models as New Physics candidates testable at the LHC and their potential as Dark Matter candidates. A particular focus will be on extensions of the Standard Model Effective Field Theory approach motivated by Composite Higgs models. Further, we will design observables for model-independent high-sensitivity scrutiny of Spontaneous Electroweak Symmetry breaking where small deviations from Standard Model predictions can be isolated. An overarching thread of the proposed work is the treading of two complementing paths that, given the accrued competences and past track record of the team, will allow us to make high-quality contributions. The first path targets precision by aiming at increased accuracy of theoretical descriptions. The second one focuses on the identification and engineering of novel observables with strong sensitivity to small effects. Additionally, we will continue the efforts of using machine learning to find viable regions of the parameter space of different classes of models, allowing to improve the time required to explore the high dimensionality of such regions. Furthermore, the expertise of the team in anomaly detection techniques will be used to propose model-independent approaches for searches of new physics phenomena at present and future colliders, exploring synergies with the ATLAS and CMS groups at LIP, as well as with the Competence Center on Simulation and Big Data and with the planned group on the Future Circular Collider. The research activities of the project will be combined with a proactive outreach programme focused on actions targeted at university, high-school and general public level. Presentation at appropriate level of the themes of the project, and of the overall LHC programme, is expected to contribute to a much needed general understanding of how big science projects are conducted and to what extent they make a societal contribution.
Suporte sob
Reforçar a investigação, o desenvolvimento tecnológico e a inovação
Região de Intervenção
...
Financiamento
Custo total elegível
€ 80,000.00
Apoio financeiro da UE
Financiamento p/ LIP
€ 0.00
€ 80,000.00
Apoio financeiro público Nacional
€ 80.000
Datas
Aprovação
Início
2022-07-01
Fim
2024-07-31
Reconhecimentos
Versão Extensa: Este trabalho é financiado por fundos nacionais através da FCT - Fundação para a Ciência e a Tecnologia, I.P., no âmbito do projeto CERN/FIS-PAR/0032/2021
Versão Resumida: OE,FCT-Portugal, CERN/FIS-PAR/0032/2021
Publicações
Status of NNLO QCD corrections for process with one or more jets in the final state at the LHC | International Conference Proceedings | published |
Dynamics of particle-particle correlations and the ridge effect in proton-proton collisions | Article in international journal (with direct contribution from team) | published |
Exploring parameter spaces with artificial intelligence and machine learning black-box optimization algorithms | Article in international journal (with direct contribution from team) | published |
Flavour-Changing Neutral Scalar Interactions of the Top Quark | Article in international journal (with direct contribution from team) | published |
Heavy quarks and jets as probes of the QGP | Article in international journal (with direct contribution from team) | published |
Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions | Article in international journal (with direct contribution from team) | published |
Improved background subtraction and a fresh look at jet sub-structure in JEWEL | Article in international journal (with direct contribution from team) | published |
Jet rapidity distributions and jet-jet correlation functions | International Conference Proceedings | published |
Jets and Jet Substructure at Future Colliders | Article in international journal (with direct contribution from team) | published |
Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase | Article in international journal (with direct contribution from team) | published |
Multiparticle production in proton-nucleus collisions beyond eikonal accuracy | Article in international journal (with direct contribution from team) | published |
NNLO interpolation grids for jet production at the LHC | Article in international journal (with direct contribution from team) | published |
On the conformal spin dependence of the perturbative QCD vacuum singularity | Article in international journal (with direct contribution from team) | published |
On the polarization of the non-prompt contribution to inclusive J/psi production in pp collisions | Article in international journal (with direct contribution from team) | published |
Parton cascades at DLA: the role of the evolution variable | International Conference Proceedings | submitted |
Picturing QCD jets in anisotropic matter: from jet shapes to Energy Energy Correlators | Article in international journal (with direct contribution from team) | published |
The Forward Physics Facility at the High-Luminosity LHC | Article in international journal (with direct contribution from team) | published |
Von Neumann entropy and Lindblad decoherence in the high energy limit of strong interactions | Article in international journal (with direct contribution from team) | published |
Apresentações
A comparative study of rapidity- azimuthal angle correlations in pp collisions and the ridge effect | Oral presentation in international conference |
Feynman Diagram Complexity in the High Energy Limit | Oral presentation in international conference |
Jets in QGP: from basics to applications (8 hours + 4 practicals) | Oral presentation in advanced training events |
Learning about jet quenching from event generators | Oral presentation in international conference |
Machine learning as a tool for high energy physics | Seminar |
Machine learning as a tool for particle physics in collider experiments | Seminar |
Particle Physics Phenomenology | Oral presentation in national or international meeting |
Progress on top-pair implementation in NNLOJET | Oral presentation in collaboration meeting |
Top-pair production using Antenna subtraction | Oral presentation in collaboration meeting |
The VII-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2023 | International Conference or Workshop | 2023-06-19 / 2023-06-23 |
Teses
Charting QCD jet evolution in extreme conditions | ||
Collider and astrophysical constraints to little Higgs models | ||
Disentangling and Quantifying Jet-Quenching With Generative Deep Learning | ||
Formal and phenomenological studies in the high energy limit of QCD | ||
Quarkonium production studies at LHC energies: towards the understanding of bound-state formation by the strong force |
Equipa
André Carvalho Martins Barreta Cordeiro |
Carlos Lourenço |
Dario Vaccaro |
Fernando Abreu Rocha de Souza |
Grigorios Chachamis |
Guilherme Luís de Sousa Fialho Guedes |
João Miguel Martins da Silva |
João Nuno Ramalho Gonçalves Pires |
João Pedro de Arruda Gonçalves |
José Guilherme Teixeira de Almeida Milhano |
José Santiago Perez |
Liliana Marisa Cunha Apolinário |
Mariana Henriques de Araújo |
Miguel Correia dos Santos Crispim Romão |
Mikael Rodriguez Chala |
Nuno Filipe da Silva Fernandes de Castro |
Nuno Olavo Gonçalves Mendes Madureira |
Pablo Guerrero Rodriguez |
Pietro Faccioli |