BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Probing the QGP with heavy flavour DTSTART:20260227T153000Z DTEND:20260227T170000Z DTSTAMP:20260728T163233Z UID:a30a9073-2982-4df5-961c-8fc3dbd8e931 SEQUENCE:3 CREATED:20260224T112711Z DESCRIPTION:At CERN'\;s LHC\, ultra relativistic nuclear collisions yi eld uttermost conditions of density and temperature\, casting constituent quarks and gluons into a strongly coupled system where they become the fun damental degrees of freedom\, the Quark Gluon Plasma (QGP). The underlying theory governing these collisions'\; evolution is Quantum Chromodynam ics\, in both its perturbative regime -- early hard scatterings leading to heavy quark production -- and non-perturbative regime -- medium thermaliz ation and subsequent hadronization. Heavy quarks\, b- and c-quarks\, have been recently successfully employed as phenomenological probes of the QGP dynamics and effects\, highlighting hints of strangeness enhancement due t o thermal s-quark production and in-medium energy loss of traversing quark s. Making use of the large heavy-ion data set collected over LHC Run 3\, t he prospect of studying exotic hadrons with the CMS detector in nuclear co llisions emerges and offers a unique opportunity. The X(3872) exotic hadro n\, poised to become a novel probe of the post-collision medium\, has prop erties that defy quark model classifications\, featuring a mixed state ran ging from a tightly bound tetraquark to a loosely bound meson molecule. Th is inner structure is highly sensitive to in-medium competing effects of d issociation and recombination\, and this work leverages them towards deliv ering a twofold study shedding light on the X(3872) nature while simultane ously probing in-medium quark Brownian diffusion. Furthermore\, exploiting the reconstruction of similar final states\, B mesons will allow to probe b-quark fragmentation fraction dependencies on kinematic and environment variables\, thus highlighting a possible non-universal behavior. Together these new results will tell about the X(3872) composition\, constrain hadr onization models and further highlight non-trivial effects steaming from t he QGP presence. LAST-MODIFIED:20260224T113007Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building/Online URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/probing-the-qgp-with-heavy -flavour/ X-ALT-DESC;FMTTYPE=text/html:

At CERN'\;s LHC \, ultra relativistic nuclear collisions yield uttermost conditions of den sity and temperature\, casting constituent quarks and gluons into a strong ly coupled system where they become the fundamental degrees of freedom\, t he Quark Gluon Plasma (QGP).

The underlying theory governing the se collisions'\; evolution is Quantum Chromodynamics\, in both its per turbative regime -- early hard scatterings leading to heavy quark producti on -- and non-perturbative regime -- medium thermalization and subsequent hadronization. Heavy quarks\, b- and c-quarks\, have been recently success fully employed as phenomenological probes of the QGP dynamics and effects\ , highlighting hints of strangeness enhancement due to thermal s-quark pro duction and in-medium energy loss of traversing quarks.

Making u se of the large heavy-ion data set collected over LHC Run 3\, the prospect of studying exotic hadrons with the CMS detector in nuclear collisions em erges and offers a unique opportunity. The X(3872) exotic hadron\, poised to become a novel probe of the post-collision medium\, has properties that defy quark model classifications\, featuring a mixed state ranging from a tightly bound tetraquark to a loosely bound meson molecule. This inner st ructure is highly sensitive to in-medium competing effects of dissociation and recombination\, and this work leverages them towards delivering a two fold study shedding light on the X(3872) nature while simultaneously probi ng in-medium quark Brownian diffusion.

Furthermore\, exploiting the reconstruction of similar final states\, B mesons will allow to probe b-quark fragmentation fraction dependencies on kinematic and environment v ariables\, thus highlighting a possible non-universal behavior. Together t hese new results will tell about the X(3872) composition\, constrain hadro nization models and further highlight non-trivial effects steaming from th e QGP presence.

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