Search for medium effects using jets from bottom quarks in PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV

The CMS collaboration
Tumasyan, Armen , Adam, Wolfgang , Andrejkovic, Janik Walter , Bergauer, Thomas , Chatterjee, Suman , Damanakis, Konstantinos , Dragicevic, Marko , Escalante Del Valle, Alberto , Hussain, Priya Sajid , Jeitler, Manfred
Phys.Lett.B 844 (2023) 137849, 2023.

Abstract (data abstract)
The first study in heavy ion collisions of the shapes of jets arising from bottom (b) quarks is presented. Jet shapes are studied using charged hadron constituents as a function of their radial distance from the jet axis. Lead-lead (PbPb) collision data at a nucleon-nucleon center-of-mass energy of $\sqrt{s_{NN}}=5.02$~TeV were recorded by the CMS detector at the LHC, with an integrated luminosity of $1.69~\mathrm{nb}^{-1}$. Compared to proton-proton collisions, the quark-gluon plasma (QGP) created in PbPb collisions causes a redistribution of the energy in b jets to larger distances from the jet axis. This QGP-induced redistribution is substantially larger for b jets than for inclusive jets.

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