Collectivity in small and large collision systems at the LHC with ALICE

Interactions of protons (pp) or of a proton with a lead nucleus (p–Pb) were not expected to form a deconfined hot and dense matter, called the Quark-Gluon Plasma (QGP), which is instead produced in heavy-ion collisions. However, high-multiplicity events in small collision systems exhibit signs of collectivity, which are understood as a signature of the QGP emergence in heavy-ion collisions. An excellent tool to probe the presence of collectivity is the anisotropic flow measured with two- and multi-particle cumulants. In these proceedings, we present the first measurement of flow coefficients and their magnitude correlations using symmetric cumulants for charged particles in pp collisions at centre-of-mass energies of , p–Pb at , Xe–Xe at and Pb–Pb collisions at , collected during the LHC Run 2 programme. In addition, the flow coefficients of identified particles in p–Pb collisions are shown. Such a broad spectrum of colliding systems with different energies and a wide range of multiplicity allows for a detailed investigation of their collision dynamics. Non-flow effects, which are azimuthal correlations not originating from a common symmetry plane, are suppressed with the pseudorapidity separation and the subtraction method. These results provide an important insight into the nature of collective phenomena in different collision systems

Results of the 2022 ECFA Early-Career Researchers Panel survey on career prospects and diversity

International audienceThis document presents the outcomes of a comprehensive survey conducted among early career researchers (ECRs) in academic particle physics. Running from September 24, 2022, to March 3, 2023, the survey gathered responses from 759 ECRs employed in 39 countries. The study aimed to gain insights into the career prospects and experiences of ECRs while also delving into diversity and sociological aspects within particle physics research. The survey results are presented in a manner consistent with the survey choices. The document offers insights for the particle physics community, and provides a set of recommendations for enhancing career prospects, fostering diversity, and addressing sociological dimensions within this field

Results of the 2021 ECFA Early-Career Researcher Survey on Training in Instrumentation

The European Committee for Future Accelerators (ECFA) Early-Career Researchers (ECR) Panel was invited by the ECFA Detector R&D Roadmap conveners to collect feedback from the European ECR community. A working group within the ECFA ECR panel held a Townhall Meeting to get first input, and then designed and broadly circulated a detailed survey to gather feedback from the larger ECR community. A total of 473 responses to this survey were received, providing a useful overview of the experiences of ECRs in instrumentation training and related topics. This report summarises the feedback received, and is intended to serve as an input to the ECFA Detector R&D Roadmap process