15-16 janvier 2015
Institut Henri Poincaré
Fuseau horaire Europe/Paris

Quarkonia suppression in a quark-gluon plasma produced in heavy ion collisions at high energies.

15 janv. 2015 à 10:21
14m
Chair: Sébastien Descotes-Genon, Amphi Hermite (Institut Henri Poincaré)

Chair: Sébastien Descotes-Genon, Amphi Hermite

Institut Henri Poincaré

11, rue Pierre et Marie Curie 75005 Paris
QCD

Orateur

M. Roland Katz (Subatech)

Description

The theory of elementary particles predicts the existence of a new state of matter: the Quark-Gluon Plasma (QGP). The latter may have existed at the first moments of the Universe following the Big Bang and can be, in theory, re-produced in heavy ion collisions at high energy colliders (e.g. the LHC). One of the QGP possible observables is the suppression of the quarkonia (heavy quark/antiquark bound states), i.e. a characteristic decrease of the their detected amount in comparison to proton-proton collisions, in which no QGP production is possible. This suppression has indeed been observed, but the latest observations expose a puzzling saturation of the suppression when the collision energy increases. A dynamical scenario is proposed to describe these kinetic dependences.

Auteur principal

M. Roland Katz (Subatech)

Documents de présentation

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