Quark Matter 2018

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

ALICE studies of proton-hyperon and hyperon-hyperon interaction via the femtoscopy method in pp collisions

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Correlations and fluctuations

Speaker

Bernhard Hohlweger (Technische Universitaet Muenchen (DE))

Description

The initial conditions and particle emission in proton-proton collisions is much better constrained than in heavy-ion collisions. This allows for a precise investigation of the interaction between pairs of produced baryons such as proton-$\Lambda$ and $\Lambda$-$\Lambda$ in this system.

In this analysis femtoscopic correlations of proton-proton, proton-$\Lambda$ and $\Lambda$-$\Lambda$ pairs have been studied for the first time in pp collisions at $\sqrt{s}$=7 TeV and 13 TeV recorded with the ALICE detector.

A new formalism to separate the background contributions from the genuine correlation arising from the baryon-baryon interaction was developed. The measured correlations were fit with the parametrization obtained by the "Correlation Analysis Tool using the Schrödinger Equation (CATS)" .

The sensitivity to different interaction potentials of the proton-$\Lambda$ and $\Lambda$-$\Lambda$ correlation function is investigated and a comparison to previous measurements by the STAR collaboration is presented.

Centralised submission by Collaboration Presenter name already specified Experiment ALICE

Primary author

Bernhard Hohlweger (Technische Universitaet Muenchen (DE))