Recent CMS data have revealed long-range correlations at high charged particle multiplicity (N_ch^j) within jets produced in proton-proton (pp) collisions, suggesting collective behavior in systems much smaller than those typical of heavy ion collisions. In the polar coordinate system about the reconstructed ...

The quest of exotic hadrons with multiquark configuration beyond theconventional constituent quark model has been one of central subiects inhadron physics for decades. Among others, the doubly heavy tetraguarkcomposed of two heavy quarks and two light antiquarks attracts significantinterest, since it represents the simplest candidate with explicit multiguarkfeature and is expected to be bound under strong interaction in the heavyquark limit. After decades of joint efforts from both theoreticians andexperimentalists, the first doubly charmed tetraguark