Abstract

This talk presents an overview of past, current, and future contributions to the ATLAS experiment, spanning from Standard Model precision measurements to new physics searches and the development of advanced luminosity detectors.

The discussion begins with ATLAS forward detectors, focusing on the LUCID system for luminosity monitoring. The evolution from LUCID -2 to LUCID -3 is explored, highlighting the challenges posed by HL-LHC conditions and the new detector prototypes under development: LUCID JF , LUCID JN, and Fiber. Performance studies demonstrate their potential to ensure robust and precise luminosity measurements across various beam conditions.

The second part of the talk delves into key ATLAS physics analyses, emphasising precision measurements of Standard Model processes, including W and Z boson cross sections and their role in PDF constraints. The importance of V+jets and V+ heavy-flavor jets final states is also discussed. Additionally, I will present a search for long-lived particles based on dE/dx measurements and the identification of low-β signatures, providing a potential signature of physics beyond the Standard Model

Finally, the talk will conclude with an outreach project conducted in Bologna aimed at children aged 5 to 11, designed to study gender bias in STEM fields and promote equal opportunities in science from an early age.