L I P

Laboratório de Instrumentação e Física Experimental de Partículas

L I P

L I P [PARTICLES AND TECHNOLOGY]

Co-financiado por:

FCT 
República Portuguesa 

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 LHCInternational Conference Proceedingspublished
Dynamics of particle-particle correlations and the ridge effect in proton-proton collisionsArticle in international journal (with direct contribution from team)published
Exploring parameter spaces with artificial intelligence and machine learning black-box optimization algorithmsArticle in international journal (with direct contribution from team)published
Flavour-Changing Neutral Scalar Interactions of the Top QuarkArticle in international journal (with direct contribution from team)published
Heavy quarks and jets as probes of the QGPArticle 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 distributionsArticle in international journal (with direct contribution from team)published
Improved background subtraction and a fresh look at jet sub-structure in JEWELArticle in international journal (with direct contribution from team)published
Jet rapidity distributions and jet-jet correlation functionsInternational Conference Proceedingspublished
Jets and Jet Substructure at Future CollidersArticle in international journal (with direct contribution from team)published
Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phaseArticle in international journal (with direct contribution from team)published
Multiparticle production in proton-nucleus collisions beyond eikonal accuracyArticle in international journal (with direct contribution from team)published
NNLO interpolation grids for jet production at the LHCArticle in international journal (with direct contribution from team)published
On the conformal spin dependence of the perturbative QCD vacuum singularityArticle in international journal (with direct contribution from team)published
On the polarization of the non-prompt contribution to inclusive J/psi production in pp collisionsArticle in international journal (with direct contribution from team)published
Parton cascades at DLA: the role of the evolution variableInternational Conference Proceedingssubmitted
Picturing QCD jets in anisotropic matter: from jet shapes to Energy Energy CorrelatorsArticle in international journal (with direct contribution from team)published
The Forward Physics Facility at the High-Luminosity LHCArticle in international journal (with direct contribution from team)published
Von Neumann entropy and Lindblad decoherence in the high energy limit of strong interactionsArticle in international journal (with direct contribution from team)published

Apresentações


A comparative study of rapidity- azimuthal angle correlations in pp collisions and the ridge effectOral presentation in international conference
Feynman Diagram Complexity in the High Energy LimitOral 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 generatorsOral presentation in international conference
Machine learning as a tool for high energy physicsSeminar
Machine learning as a tool for particle physics in collider experimentsSeminar
Particle Physics PhenomenologyOral presentation in national or international meeting
Progress on top-pair implementation in NNLOJETOral presentation in collaboration meeting
Top-pair production using Antenna subtractionOral presentation in collaboration meeting


The VII-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2023International Conference or Workshop2023-06-19 / 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




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