# XXVII International Workshop on Deep Inelastic Scattering and Related Subjects

Apr 8 – 12, 2019
Turin
Europe/Rome timezone

## Pion and Kaon multiplicities in SIDIS from COMPASS

Apr 9, 2019, 2:17 PM
17m
Rettorato - Aula Principi d'Acaja

### Rettorato - Aula Principi d'Acaja

via Verdi, 8 Turin
Parallel Session Talk WG6: Spin and 3D structure

### Speaker

Nicolas Pierre (Université Paris-Saclay (FR))

### Description

We present preliminary COMPASS results on pion and kaon multiplicities produced in semi-inclusive deep inelastic scattering of 160 GeV muons off a pure proton (LH$_2$) target. The results constitute a large data set of more than 600 points for pions and 600 for kaons, covering a large $x$, $Q^2$ and $z$ domain in a fine binning. The results from the sum of the z-integrated multiplicities $M^{\pi^+}+ M^{\pi^-}$ and $M^{K^+}+ M^{K^-}$ and their ratio $M^{\pi^+}/M^{\pi^-}$ and $M^{K^+}/M^{K^-}$ are presented versus $x$ and compared to previous COMPASS results on deuteron and other experiments like EMC and HERMES.

### Primary author

Nicolas Pierre (Université Paris-Saclay (FR))