Topic: Testing the SM and probing new physics via QCD spin effects

Speaker: Assoc.Prof. Bin Yan

Coordinates: PCFT C1124, 16:00, Thursday, April 2

Abstract: QCD spin effects play a crucial role in probing nuclear structures and have been extensively studied in hadronic physics. However, their potential for exploring new physics beyond the Standard Model and quantum entanglement phenomena has been largely overlooked. In this talk, I will discuss how transverse spin effects—encoded in quark fragmentation functions—can probe electroweak dipole interactions of light quarks, which are otherwise challenging to access due to their chirality-flipping nature in traditional searches at the LHC and other facilities. Additionally, while quantum entanglement has been observed in top-quark pairs at the LHC, extending such studies to light-quark systems remains a challenge, as conventional methods rely on perturbative decays of massive particles. I will present new approaches to investigate entanglement and test Bell inequality violations in light-quark pairs using QCD transverse spin correlations.