# ICHEP2018 SEOUL

Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

## Forward energy flow and jet production in pp and pA collisions at the LHC with CMS

Jul 7, 2018, 5:30 PM
15m
101 (COEX, Seoul)

### 101

#### COEX, Seoul

Parallel Strong Interactions and Hadron Physics

### Speaker

Merijn Van De Klundert (University of Antwerp (BE))

### Description

The CASTOR calorimeter at CMS measures the energy of particles emitted with pseudorapidity between -5.2 and -6.6. It has been operating since the startup of the LHC in 2009 and has taken data in pp, pPb, and PbPb collisions at various centre-of-mass energies during run 1 and run 2. In this presentation we give an overview of some important and unique results obtained with CASTOR, with emphasis on the forward energy flow and jet production in pp collisions with $\sqrt{s} =$ 13 TeV and pA collision with $\sqrt{s} =$ 5 TeV. These results are compared to various models for the underlying event and parton shower dynamics. Further, we aim to interpret the results in terms of gluon saturation.

### Primary author

Arnd Meyer (Rheinisch Westfaelische Tech. Hoch. (DE))