alphas-2025: Workshop on precision measurements of the QCD coupling constant

from Sunday, December 14, 2025 (6:00 PM) to Friday, December 19, 2025 (2:00 PM)


        : Sessions
    /     : Talks
        : Breaks
Dec 14, 2025
Dec 15, 2025
Dec 16, 2025
Dec 17, 2025
Dec 18, 2025
Dec 19, 2025
AM
8:45 AM Welcome/Introduction - David d'Enterria (CERN) Giulia Zanderighi (Max Planck Inst. for Gravitationsph Albert Eisntein Institute (DE)) Mr Stefan Kluth (Max Planck Society (DE))  
9:00 AM
alpha_s: Lattice QCD (until 10:00 AM)
9:00 AM alphas from LatticeQCD - Alberto Ramos Martinez (Univ. of Valencia and CSIC (ES))  
9:30 AM FLAG update (to be confirmed) - Stefan Sint (Trinity College Dublin)  
10:00 AM --- Coffee break ---
10:30 AM
alpha_s: Lattice QCD (until 12:00 PM)
10:30 AM Strong coupling constant from the static energy - Alexei Bazavov (Michigan State University)  
11:00 AM A precise $alpha_s$ determination from the R-improved QCD Static Energy - José Manuel Mena Valle (Universidad de Salamanca)  
11:30 AM Discussion: alpha_s from lattice QCD  
9:00 AM
alpha_s from DIS & PDFs (until 10:00 AM)
9:00 AM Complete 3-loop heavy-flavor corrections for unpolarized & polarized structure functions - Prof. Johannes Bluemlein  
9:30 AM alpha_s from DY and top quark data at hadron colliders - Sven-Olaf Moch (Hamburg University (DE)) Sven-Olaf Moch  
10:00 AM --- Coffee break ---
10:30 AM
alpha_s from DIS & PDFs (until 12:00 PM)
10:30 AM alpha_s at EIC - Zuhal Seyma Demiroglu (Stony Brook University)  
11:00 AM αs from large-x DIS resummation - Анатолий Котиков  
11:30 AM alpha_s measurement prospects at the EIC and JLab@22 - Alexandre Deur (Jefferson Lab)  
9:00 AM
alpha_s at hadron colliders (until 10:00 AM)
9:00 AM Towards a precise determination of $\alpha_s$ from the Z boson $q_T$ spectrum - Giulia Marinelli  
9:30 AM Impact of higher-order theory uncertainties on alpha_s extractions at the LHC - Rene Poncelet (IFJ PAN Krakow)  
10:00 AM --- Coffee break ---
10:30 AM
alpha_s from e+e- hadronic final states (until 12:00 PM)
10:30 AM alpha_S determination from semi-inclusive regions in hadron and e+e- collisions - Giancarlo Ferrera (University of Milan)  
11:00 AM On the N-space and tau-space resummation approaches for thrust distribution in $e^+e^-$ - Paolo Nason  
11:30 AM Alphas from Precision e+e- Event Shapes - Prof. Iain Stewart  
8:30 AM
alpha_s from e+e- hadronic final states (until 10:00 AM)
9:00 AM Track energy-energy correlators as precision probes of the strong coupling - Yibei Li  
9:30 AM alpha_s from EEC confinement plateau - Hao Chen (MIT)  
10:00 AM --- Coffee break ---
10:30 AM
alpha_s from DIS & PDFs (until 11:00 AM)
10:30 AM alpha_s from the CT25 global PDF fit - Kirtimaan Ajaykant Mohan Prof. Pavel Nadolsky (Michigan State University) Joey Huston (Department of Physics and Astronomy) Joey Huston (Michigan State University (US))  
11:00 AM
alpha_s from e+e- hadronic final states (until 12:00 PM)
11:00 AM Discussion: alpha_S from e+e- hadronic final states - Pier Francesco Monni (CERN)  
9:00 AM
alpha_S from electroweak observables (until 10:00 AM)
9:30 AM Higher-order hadronic vacuum polarization contributions to the muon anomalous magnetic moment - Dr Alexander Nesterenko (JINR)  
10:00 AM --- Coffee / Tea break ---
10:30 AM alpha_s future perspectives (2025 EU Strategy of Particle Physics Update) - David d'Enterria (CERN)  
11:00 AM alpha_s world average determination - Joey Huston (Michigan State University (US)) Joey Huston (Department of Physics and Astronomy) Giulia Zanderighi (Max Planck Society (DE)) Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE)) Giulia Zanderighi (CERN)  
11:30 AM alpha_s world average: Discussion - Giulia Zanderighi (CERN) Giulia Zanderighi (Max Planck Society (DE))  
PM
7:00 PM --- Dinner ---
12:00 PM --- Lunch and free afternoon (ski) ---
4:45 PM
alpha_s from quarkonia (until 5:15 PM)
4:45 PM Determination of the quark masses and the strong coupling from global fits to quarkonium at N3LO - Prof. VICENT Mateu (University of Salamanca)  
5:15 PM
alpha_s from DIS & PDFs (until 6:45 PM)
5:15 PM A Determination of alphas( mZ ) at aN3LO_QCD​ ⊗NLO_QED ​Accuracy from a Global PDF Analysis - Emanuele Roberto Nocera Emanuele Roberto Nocera (Università degli Studi di Torino and INFN Torino) Juan Rojo Chacon (Nikhef National institute for subatomic physics (NL))  
5:45 PM MSHT Approximate N3LO Determination of the Strong Coupling Constant (Updates) - Thomas Cridge  
6:45 PM
Welcome drink (until 7:15 PM)
7:15 PM --- Dinner ---
12:00 PM --- Lunch / Ski ---
5:00 PM
alpha_s at hadron colliders (until 7:00 PM)
5:00 PM Determination of the strong coupling and its running from measurements of inclusive jet production at CMS - Valentina Guglielmi (University of Zurich (CH))  
5:30 PM CMS extractions of the strong coupling constant: Status and plans - Patrick Louis S Connor (CERN)  
6:00 PM Recent ATLAS determinations of the strong coupling constant - Prof. Claudia Glasman (Universidad Autonoma de Madrid (ES))  
6:30 PM Precise Determination of the Strong Coupling Constant from Dijet Cross Sections up to the Multi-TeV Range - Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE))  
7:00 PM --- Dinner (FONDUE cheese) ---
12:00 PM --- Lunch / Ski ---
5:00 PM
alpha_s from e+e- hadronic final states (until 7:00 PM)
5:00 PM Summary of the CERN workshop on alpha_s and thrust - Pier Francesco Monni (CERN) Gherardo Vita  
5:30 PM Measurements of Hadronic Final States in Archived LEP Data - Anthony Badea (University of Chicago (US))  
6:00 PM Sudakov Shoulder Factorization For Event Shapes - Arindam Bhattacharya  
6:30 PM Improve alpha_s extraction from heavy jet mass data - Xiaoyuan Zhang (MIT)  
7:00 PM --- Dinner ---
12:00 PM --- Lunch / Ski ---
5:00 PM
alpha_s from tau decays (until 6:00 PM)
5:00 PM Determination of the strong coupling from tau decays: current status - Antonio Pich (IFIC, University of Valencia - CSIC)  
5:30 PM $\alpha_s$ from $\tau$ decays including $\tau\to2\pi\nu_\tau$ from Belle - Diogo Boito (University of Sao Paulo)  
6:00 PM
alpha_s from tau decays (until 7:00 PM)
6:00 PM Comparison between approaches to the determination of alpha_s from hadronic tau decays - Santi Peris  
7:00 PM --- Dinner (PIERRADE: Grilled meat) ---