Rare and novel probes for heavy ion physics at CMS

<!--HTML--><p><span>We present recent&nbsp;results from PbPb collisions recorded by CMS with novel probes that have&nbsp;the potential to help better&nbsp;understand the properties of the&nbsp;quark-gluon plasma (QGP). First evidence of the prompt production of the&nbsp;exotic X(3872)&nbsp;state will be discussed. Its interaction with QGP can&nbsp;provide constraints on the nature of the state, with implications on the&nbsp;coalescence or recombination mechanisms. Large radius jets, with radius&nbsp;parameter up to 1.0, have also been used for&nbsp;the first time as a probe&nbsp;in heavy-ion collisions. In contrast with smaller radius jets, the&nbsp;medium response is much more&nbsp;important and prominent. We also show the&nbsp;first evidence of the top quark in nucleus-nucleus collisions. The use&nbsp;of top&nbsp;quarks as probes opens many future perspectives, including&nbsp;constraints on nPDFs and on the time structure of the QGP.</span></p> <p><span>Password: 156604</span></p>