17–18 Sept 2026
Lund University, Physics Department
Europe/Stockholm timezone

Towards global interpretation of the LHC data

17 Sept 2026, 13:30
15m
A-salen (L317) (Lund University, Physics Department)

A-salen (L317)

Lund University, Physics Department

Sölvegatan 14, Lund

Speaker

Katerina Lipka (Deutsches Elektronen-Synchrotron (DE))

Description

A simultaneous determination of the proton parton distribution functions (PDFs) together with the strong coupling constant, the top quark15
pole mass, and, for the first time, the effective weak mixing angle, is presented. The analysis is performed
at next-to-next-to-leading order (NNLO) in QCD, based on inclusive DIS measurements at HERA and precise measurements of jet, electroweak boson,
and top quark-antiquark pair production in proton-proton collisions at the LHC. Non-relativistic QCD effects in top quark-antiquark pair production are considered, calculated at NLO in NRQCD, and combined with NLL soft-gluon resummation. Simultaneously with PDFs and Standard Model parameters, two relevant top-quark SM effective-field-theory operators are constrained. Precision of obtained SM parameters is compatitive with
the state-of-the art individual extractions and accounts for the correlations among those parameters and PDFs. This work paves the way for future global interpretation of the LHC data.

Author

Katerina Lipka (Deutsches Elektronen-Synchrotron (DE))

Presentation materials