Speaker
Description
The behavior of quarkonia and open-heavy flavour hadrons in hadronic collisions provide a unique testing ground for understanding quantum chromodynamics (QCD). Although there has been significant progress, our understanding of hadronic collisions has been challenged by the observation of intriguing effects in high-multiplicity proton-proton and proton-Pb collisions, such as the discovery of correlations and the suppression of quarkonium excited states in those systems. Those phenomena show a smooth continuation of heavy-ion features to small systems and lower density, whose origin is still not clear. Two serious contenders remain today as possible explanations, one based on initial-state correlations and another that requires final-state interactions to be at play.
In this talk, I will present different results, considering the possibility of final-state interactions for the explanation of quarkonium excited states. Moreover, the structure of exotic resonances that do not trivially fit the usual quark model expectations has been a matter of intense scientific debate during the last two decades. I will show that a possible way of estimating the nature of these states is to study their behavior when immersed in QCD matter.
