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Strangeness production in Pb-Pb collisions at 5.02TeV in ALICE

Grant number: 16/13803-2
Support type:Regular Research Grants
Duration: October 01, 2016 - September 30, 2018
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal Investigator:David Dobrigkeit Chinellato
Grantee:David Dobrigkeit Chinellato
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


Over the past few decades, ultra-relativistic heavy-ion collisions have been used to create high-energy-density systems in which it is believed that a deconfined state of partonic matter called the `Quark-Gluon Plasma' (QGP) is formed. A number of characteristic features of such a state of matter, such as the baryon anomaly and strangeness enhancement, have been studied both at RHIC using gold-gold (Au-Au) collisions at 200 GeV and at the LHC using lead-lead (Pb-Pb) collisions at 2.76 TeV. Recently, the LHC has delivered Pb-Pb collisions at an unprecedented center-of-mass energy of 5.02 TeV. In this project, we propose to study the baryon anomaly and strangeness enhancement in Pb-Pb collisions at this higher energy. This will allow us to determine if the underlying mechanisms responsible for such phenomena are energy-density dependent, in which case these observations will exhibit $\sqrt{s}$ dependence, or if they are system-size dependent, in which case they will mostly remain unchanged as the colliding nuclei are still of the same dimensions. Furthermore, this project also proposes the continued maintenance, operation and development of an event selection and classification framework called ``AliMultSelection'', which will be the tool to be used for any and all centrality and multiplicity selection performed in all colliding systems and is therefore fundamental not only for this project but for the ALICE experiment. (AU)

Articles published in Agência FAPESP Newsletter about the research grant
LHC detects production of large quantities of strange particles in proton collisions 

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
HIPPERT, M.; CHINELLATO, D. D.; LUZUM, M.; NORONHA, J.; NUNES DA SILVA, T.; TAKAHASHI, J. Measuring momentum-dependent flow fluctuations in heavy-ion collisions. Physical Review C, v. 101, n. 3 MAR 4 2020. Web of Science Citations: 0.
ACCONCIA, R.; CHINELLATO, D. D.; DERRADI DE SOUZA, R.; TAKAHASHI, J.; TORRIERI, G.; MARKERT, C. Resonance suppression from color reconnection. Physical Review D, v. 97, n. 3 FEB 12 2018. Web of Science Citations: 1.

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