Speaker
Description
Electric dipole moments (EDM) of fundamental particles serve as crucial probes for physics beyond the Standard Model. Similarly, magnetic dipole moments (MDM) of baryons provide information on their substructure and serve as experimental benchmarks for testing low-energy Quantum Chromodynamics (QCD) models, particularly those related to non-perturbative QCD dynamics. To expand upon the global effort in experimental electromagnetic dipole moment measurements, we propose an innovative approach focusing on $\Lambda$ baryons. This approach aims to significantly improve the existing measurements, which have remained unchanged for over four decades, performing the measurement for the first time with a collider experiment. Our proposed technique leverages the spin precession within the LHCb dipole magnet. The feasibility of reconstructing $\Lambda$ baryons using the tracking stations downstream of the LHCb dipole magnet will be outlined, highlighting the challenges and the advancements in the experimental technique. The resolution on the reconstructed quantities needed for the EMD and MDM measurement has been evaluated on data collected with the LHCb detector during the Run 2 of the LHC and compared with simulations. Additionally, we will discuss sensitivity studies and provide insights into the potential of dipole moment measurements during LHC Run3 and beyond.
