# ICHEP 2020

28 July 2020 to 6 August 2020
virtual conference
Europe/Prague timezone

## First direct measurement of the dead-cone effect at colliders with iterative declustering techniques in pp collisions at 13 TeV with ALICE

30 Jul 2020, 09:00
15m
virtual conference

#### virtual conference

Talk 06. Strong Interactions and Hadron Physics

### Speaker

Leticia Cunqueiro Mendez (Oak Ridge National Laboratory - (US))

### Description

We report the first direct measurement of the dead-cone effect at colliders, using iterative jet declustering techniques in pp collisions at $\sqrt{s}$ = 13 TeV. The iterative declustering is applied to the angular ordered C/A tree of jets associated with D$^{0}$ mesons. Following the D$^{0}$ branch in the splitting history the corresponding Lund plane diagram is constructed, which enables to suppress hadronization effects by appropriate kinematic selections. The reported variable is the splitting angle with respect to momentum of the emitter, which is updated after each splitting. Track-based jet finding, along with the low-$p_{T}$ reach of the ALICE detector, allows for an accurate reconstruction of the splitting angle in the phase-space where the dead-cone effect is expected to be largest. The results are compared to those of inclusive jets and theoretical models.

### Primary author

Leticia Cunqueiro Mendez (Oak Ridge National Laboratory - (US))