Dead cone measurement in b-jets at CMS

6 May 2026, 17:05
20m
Sala GIOVE A, Ground Floor (Hotel Carlton)

Sala GIOVE A, Ground Floor

Hotel Carlton

Talk WG4 QCD with Heavy Flavors and Hadronic Final States WG4 QCD with Heavy flavours and Hadronic Final States

Speaker

Andris Potrebko

Description

The CMS collaboration presents direct measurement of the dead-cone effect in b-jets using $\sqrt{s}=13$ TeV proton-proton collision data. By applying iterative declustering to b-jets from dileptonic $t\bar{t}$ events, we uncover the angular distribution of soft emissions. The unfolded results demonstrate the suppression of collinear gluon radiation characteristic of the heavy-quark parton shower, confirming QCD predictions relative to light quarks.

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