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

from Sunday 14 December 2025 (18:00) to Friday 19 December 2025 (14:00)


        : Sessions
    /     : Talks
        : Breaks
14 Dec 2025
15 Dec 2025
16 Dec 2025
17 Dec 2025
18 Dec 2025
19 Dec 2025
AM
08:45 --- Welcome/Introduction ---
09:00
alpha_s: Lattice QCD (until 10:00)
09:00 alphas from LatticeQCD - Alberto Ramos Martinez (Univ. of Valencia and CSIC (ES))  
09:30 FLAG update (to be confirmed) - Stefan Sint (Trinity College Dublin)  
10:00 --- Coffee break ---
10:30
alpha_s: Lattice QCD (until 12:00)
10:30 Strong coupling constant from the static energy - Alexei Bazavov (Michigan State University)  
11:00 A precise $alpha_s$ determination from the R-improved QCD Static Energy - José Manuel Mena Valle (Universidad de Salamanca)  
11:30 Discussion: alpha_s from lattice QCD  
09:00
alpha_s from DIS & PDFs (until 10:00)
09:00 Complete 3-loop heavy-flavor corrections for unpolarized & polarized structure functions - Prof. Johannes Bluemlein  
09:30 alpha_s from DY and top quark data at hadron colliders - Sven-Olaf Moch (Hamburg University (DE)) Sven-Olaf Moch  
10:00 --- Coffee break ---
10:30
alpha_s from DIS & PDFs (until 12:00)
10:30 alpha_s at EIC - Zuhal Seyma Demiroglu (Stony Brook University)  
11:00 αs from large-x DIS resummation - Анатолий Котиков  
11:30 alpha_s measurement prospects at the EIC and JLab@22 - Alexandre Deur (Jefferson Lab)  
09:00
alpha_s at hadron colliders (until 10:00)
09:00 Towards a precise determination of $\alpha_s$ from the Z boson $q_T$ spectrum - Giulia Marinelli  
09:30 Impact of higher-order theory uncertainties on alpha_s extractions at the LHC - Rene Poncelet (IFJ PAN Krakow)  
10:00 --- Coffee break ---
10:30
alpha_s from e+e- hadronic final states (until 12:00)
10:30 alpha_s from event shapes - Paolo Nason  
11:00 Alphas from Precision e+e- Event Shapes - Prof. Iain Stewart  
11:30 \alpha_S determination from thrust distribution at N3LL+NNLO in QCD - Giancarlo Ferrera (University of Milan)  
08:30
alpha_s from e+e- hadronic final states (until 10:00)
09:00 Track energy-energy correlators as precision probes of the strong coupling - Yibei Li  
09:30 alpha_s from EEC confinement plateau - Hao Chen (MIT)  
10:00 --- Coffee break ---
10:30
alpha_s from e+e- hadronic final states (until 12:00)
10:30 Towards an alpha_s extraction from track-based energy correlators at LEP - Wouter Waalewijn (University of Amsterdam)  
11:00 Discussion: alpha_S from e+e- hadronic final states - Pier Francesco Monni (CERN)  
09:00
alpha_S from electroweak observables (until 10:00)
10:00 --- Coffee / Tea break ---
10:30 alpha_s world average determination - Giulia Zanderighi (Max Planck Society (DE)) Joey Huston (Department of Physics and Astronomy) Joey Huston (Michigan State University (US)) Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE)) Giulia Zanderighi (CERN)  
11:00 alpha_s world average: Discussion - Giulia Zanderighi (Max Planck Society (DE)) Giulia Zanderighi (CERN)  
PM
19:00 --- Dinner ---
12:00 --- Lunch and free afternoon (ski) ---
17:00
alpha_s from quarkonia (until 17:30)
17:00 Determination of the quark masses and the strong coupling from global fits to quarkonium at N3LO - Prof. VICENT Mateu (University of Salamanca)  
17:30
alpha_s from DIS & PDFs (until 19:00)
17:30 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))  
18:00 MSHT Approximate N3LO Determination of the Strong Coupling Constant (Updates) - Thomas Cridge  
18:30 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))  
19:00 --- Dinner ---
12:00 --- Lunch / Ski ---
17:00
alpha_s at hadron colliders (until 19:00)
17:00 Determination of the strong coupling and its running from measurements of inclusive jet production at CMS - Valentina Guglielmi (University of Zurich (CH))  
17:30 CMS extractions of the strong coupling constant: Status and plans - Patrick Louis S Connor (CERN)  
18:00 Recent ATLAS determinations of the strong coupling constant - Prof. Claudia Glasman (Universidad Autonoma de Madrid (ES))  
18:30 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))  
19:00 --- Dinner ---
12:00 --- Lunch / Ski ---
17:00
alpha_s from e+e- hadronic final states (until 19:00)
17:00 Summary of the CERN workshop on alpha_s and thrust - Pier Francesco Monni (CERN) Gherardo Vita  
17:30 Measurements of Hadronic Final States in Archived LEP Data - Anthony Badea (University of Chicago (US))  
18:00 Sudakov Shoulder Factorization For Event Shapes - Arindam Bhattacharya  
18:30 Improve alpha_s extraction from heavy jet mass data - Xiaoyuan Zhang (MIT)  
19:00 --- Dinner ---
12:00 --- Lunch / Ski ---
17:00
alpha_s from tau decays (until 18:00)
17:00 Determination of the strong coupling from tau decays: current status - Antonio Pich (IFIC, University of Valencia - CSIC)  
17:30 $\alpha_s$ from $\tau$ decays including $\tau\to2\pi\nu_\tau$ from Belle - Diogo Boito (University of Sao Paulo)  
18:00
alpha_s from tau decays (until 19:00)
18:00 Comparison between approaches to the determination of alpha_s from hadronic tau decays - Santi Peris  
18:30 Higher-order hadronic vacuum polarization contributions to the muon anomalous magnetic moment - Dr Alexander Nesterenko (JINR)  
19:00 --- Dinner ---