News from strong interactions program of the NA61/SHINE experiment

TL;DR

The NA61/SHINE experiment investigates the phase diagram of strongly interacting matter by measuring particle spectra and fluctuations across various collision systems to identify the critical point and understand deconfinement.

Contribution

This paper presents new experimental results on particle production and fluctuations in Ar+Sc collisions, expanding the understanding of the QCD phase diagram.

Findings

New Ar+Sc collision data on negative pion production.

Fluctuation measurements in Ar+Sc collisions.

Higher order moments of net-charge distribution in p+p collisions.

Abstract

The NA61/SHINE experiment aims to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. This is performed by a two dimensional phase diagram ($T-\mu_B$) scan of measurements of particle spectra and fluctuations in proton-proton, proton-nucleus and nucleus-nucleus interactions as a function of collision energy and system size. In this contribution new NA61/SHINE results on negative pion production, as well as transverse momentum and multiplicity fluctuations in Ar+Sc collisions are presented. Moreover, the latest results on higher order moments of net-charge multiplicity distribution in p+p collisions are also discussed. The Ar+Sc results are compared to NA61 p+p and Be+Be data, as well as to NA49 $A+A$ results.