From Electroweak measurements at the LHC to the Proton structure

by Prof. Liang Han (Univ. of Science and Technology of China)

Thursday 30 Apr 2026, 10:00 → 12:00 Europe/Berlin

Kreuzbergweg 24/0.052 (FTD) - Präsentationsraum (FTD)

Abstract: 

 

As the lightest and stable hadron and nucleon, the proton provides rich physical content and fundamental questions to understand strong interaction and color confinement. For instance, is there any experimental measurement that can clearly distinguish between u and d valence quarks in the proton? Are the abundances of u and d sea quarks equivalent? The Large Hadron Collider (LHC) offers an ideal high-energy frontier platform for probing proton structure and understanding Quantum Chromodynamics (QCD), the theory of the strong interaction. In this talk, I will introduce a series of new W/Z boson related asymmetry observables at the LHC, which can rigorously distinguish and probe the u/d-quark momentum distributions inside the proton. The measurements of the new observables would provide pivotal data inputs for establishing unbiased collinear Parton Distribution Functions (PDFs, such as the new JZ96 PDF model), and the impact on the famous SU(2) flavor asymmetry of sea quarks dbar/ubar > 1 observed in deuteron scattering experiments is investigated.

 

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Meeting ID: 662 5356 7797
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