Discovery and study of the first double-charm tetraquark

Mikhail Mikhasenko (TU München)

Conventional hadronic matter incorporates baryons and mesons made of three

quarks and quark-antiquark pairs, respectively.

Hints for the exotic hadrons kept appearing since the discovery of unusual properties of X(3872) in 2003, as the charged charmonium-like states in 2013, and pentaquarks in 2015.

In the talk, I will discuss a new landmark discovery: an observation of the genuinely novel class of hadrons, a doubly charmed tetraquark, consisting of two charm quarks, an anti-u, and anti-d quark using data collected by the LHCb experiment at the Large Hadron Collider.

Details of the analysis and aspects of a few theoretical calculations anticipating the discovery for several decades will be reported.

 

HISKP, Hörsaal, Raum 0.023

Bitte beachten Sie, dass am Hörsaaleingang die 3G-Kontrolle durchgeführt wird.

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