# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Using femtoscopy to probe the strong interaction for mesons and baryons and their anti-particles in pp and Pb-Pb collisions with ALICE

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Correlations and fluctuations

### Speaker

Jesse Thomas Buxton (Ohio State University (US))

### Description

Understanding the strong interaction between particles is one of the most fundamental problems in nuclear physics. Parameters of this interactions are well-known only for a limited set of particle pairs. Little is known about the cross section of baryon-anti-baryon scattering as well as about the interaction of mesons and baryons with $\Lambda$ or $\Xi$ hyperons.
The ALICE detector has excellent tracking and particle identification capabilities over a broad momentum range which makes a variety of different measurements possible. Femtoscopy, the technique of measuring short-range two-particle correlations as a function of relative momentum, which is traditionally utilized to measure the size of the QGP fireball created in relativistic heavy-ion collisions, can be also used to probe the strong interaction for different meson and baryon pairs.
In this talk we present the results of the femtoscopic analysis of baryon-baryon and baryon-anti-baryon pairs, namely pp, $\rm p\Lambda$, and $\rm \Lambda\Lambda$ pairs in pp collisions at 7 and 13 TeV, as well as $\rm p\bar{p}$, $\rm p\bar{\Lambda}$, and $\Lambda\bar{\Lambda}$ in Pb-Pb collisions at 2.76 and 5.02 TeV. Correlations of $\Lambda$ and $\Xi$ hyperons with charged kaons in Pb-Pb collisions at 2.76 TeV are also discussed. For all studied pairs the strong interaction cross section parameters are extracted and compared to available world data.

Collaboration ALICE Experiment Presenter name already specified