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alphas-2024: Workshop on precision measurements of the QCD coupling constant

→ Europe/Zurich
ECT* Trento

ECT* Trento

Strada delle Tabarelle, 286 38123 Villazzano TRENTO (TN)
David d'Enterria (CERN), Giulia Zanderighi (Max Planck Society (DE)), Ines Campo (FBK/ECT*), Stefan Kluth (Max Planck Society (DE))
Description

The "alphas-2024: Workshop on precision measurements of the strong coupling constant" conference, will be held at ECT*-Trento in the first week of February 2024, aims at exploring in depth the current status and upcoming prospects in the determination of the QCD coupling constant $\alpha_S(m_Z)$ from the key observables where high-precision experimental measurements and theoretical calculations are (or will be) available: (i) lattice QCD, (ii) hadronic decays of tau leptons, (iii) deep-inelastic electron-proton scattering and global parton densities analyses, (iv) QCD corrections to electroweak precision observables, and analysis of (v) hadronic final states in high energy particle collisions ($e^+e^-$, ep, and pp). 

Previous meetings:

 

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  • Mon, February 5
    • 10:30 AM → 11:00 AM
      Coffee break 30m
    • 12:00 PM → 1:00 PM
      Lunch 1h
    • 1:00 PM → 1:15 PM
      Introduction and organisation

      Aim of the workshop, organise Snowmass contribution

      alphas24_ect_intro.pdf
      • 1:00 PM
        Presentation of the workshop 15m
        Speakers: David d'Enterria (CERN), Giulia Zanderighi (Max Planck Society (DE)), Stefan Kluth (Max Planck Society (DE))
        alphas24_ect_intro.pdf
    • 1:15 PM → 3:45 PM
      alpha_s: Lattice QCD
      alphas24.jpg
      • 1:15 PM
        Accurate determination of the strong coupling 30m
        Speaker: Alberto Ramos Martinez (Univ. of Valencia and CSIC (ES))
        trento_24.pdf
      • 1:45 PM
        RG improvement and alpha_s determination from relativistic sum rules 30m
        Speaker: Mohd Siddique Akbar Alam Khan (Indian Institute of Science Bangalore)
        Alam_Alpha_2024.pdf
      • 2:15 PM
        Extraction of alpha_S using energy of a static quark-antiquark pair within hyperasymptotic approximation 30m
        Speaker: Cesar Ayala
        Alphas24Ayala.pdf
      • 2:45 PM
        TUMQCD: alpha from 2+1+1 static potential 30m
        Speaker: Viljami Leino
        Leino_211_alpha_tumqcd_trento24.pdf
      • 3:15 PM
        Factorial Growth in pQCD and Implications for αs 30m
        Speaker: Andreas Kronfeld
        ask4alpha_s.pdf
    • 3:45 PM → 3:50 PM
      ECT* welcome (Dir. Gert Aarts) 5m
    • 3:50 PM → 4:15 PM
      Coffee break 25m
    • 4:15 PM → 7:15 PM
      alpha_s: Lattice QCD
      alphas24.jpg
      • 4:15 PM
        Lambda_0 from the statice force on the lattice with gradient flow 30m
        Speaker: Julian Mayer-Steudte
        JulianMayer-Steudte_AlphaS_Trento_2024.pdf
      • 4:45 PM
        Determination of alpha_s in 2+1 flavor lattice QCD from gradient flow 30m
        Speaker: Hai-Tao Shu
        alphas2024.pdf
      • 5:15 PM
        Lattice determination of the strong coupling constant from moments of quarkonium correlators 30m
        Speaker: Peter Petreczky
        alphas_ect24.pdf
      • 5:45 PM
        On the heavy quark correlator moments method 30m
        Speaker: Rainer Paul Sommer (DESY)
        trento24-RS-trimmed.pdf
      • 6:15 PM
        FLAG working group on alpha_S 30m
        Speaker: Stefan Sint (Trinity College Dublin)
        alphas_24_sint.pdf
  • Tue, February 6
    • 9:00 AM → 10:30 AM
      Morning
    • 10:30 AM → 11:00 AM
      Coffee break 30m
    • 11:00 AM → 12:00 PM
      Morning
    • 12:00 PM → 1:00 PM
      Lunch break 1h
    • 1:00 PM → 1:30 PM
      alpha_s: Lattice QCD
      alphas24.jpg
      • 1:00 PM
        Discussion: alpha_s from lattice QCD 30m
    • 1:30 PM → 3:30 PM
      alpha_s from DIS & PDFs
      • 1:30 PM
        Perspectives on measurements of alpha_s from spin structure functions 30m
        Speaker: Alexandre Deur (Jefferson Lab)
        BjSR_alpha_EIC.pdf
      • 2:00 PM
        Extraction of the strong coupling with HERA and EIC inclusive data 30m

        arxiv:2307.01183

        Speaker: ANDREA BARONTINI (Università degli studi di Milano)
        Alpha_s_Barontini.pdf
      • 2:30 PM
        Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS 30m

        DESY-23-129, arxiv:2309.02889

        Speaker: Florian Lorkowski (University of Zürich)
        InclusiveJets.pdf
      • 3:00 PM
        MSHT20aN3LO alphas 30m
        Speaker: Thomas Cridge (DESY)
        MSHT20_alphas2024.pdf
    • 3:30 PM → 4:00 PM
      Coffee break 30m
    • 4:00 PM → 4:30 PM
      alpha_s from DIS & PDFs
      • 4:00 PM
        alphas and NNPDF fits 30m
        Speaker: Luigi Del Debbio (The University of Edinburgh (GB))
        Trento24.pdf
    • 4:30 PM → 6:30 PM
      alpha_s at hadron colliders
      • 4:30 PM
        Determination of alpha_S from azimuthal correlations among jets (CMS) 30m
        Speaker: Paris Gianneios (Université Libre de Bruxelles (BE))
        Conf_3_Trento2024_ParisGianneios.pdf
      • 5:00 PM
        Determination of the strong coupling from TEECs in multijet events at sqrt(s) = 13 TeV with the ATLAS detector 30m
        Speaker: Fernando Barreiro Alonso (Universidad Autonoma de Madrid (ES))
        alphas_2024.pdf
      • 5:30 PM
        Measurement of alpha_S from energy correlators in jets (CMS) 30m
        Speaker: Meng Xiao (ZJU - Zhejiang University (CN))
        ENCAlphaS.pdf
      • 6:00 PM
        Possible strategy to extract αS using secondary Lund planes 30m
        Speaker: Cristian Baldenegro Barrera (Sapienza Universita e INFN, Roma I (IT))
        AlphaS meeting.pdf
    • 6:30 PM → 7:00 PM
      alpha_s from DIS & PDFs
      • 6:30 PM
        3-loop hevy flavor Wilson coefficients to the unpolarized and polarized deep-inelastic scattering 30m
        Speaker: Prof. Johannes Bluemlein
        TRENTO24.pdf
  • Wed, February 7
    • 9:00 AM → 10:30 AM
      Morning
    • 10:30 AM → 11:00 AM
      Coffee break 30m
    • 11:00 AM → 12:00 PM
      Morning
    • 12:00 PM → 1:00 PM
      Lunch 1h
    • 1:00 PM → 3:30 PM
      alpha_s at hadron colliders
      • 1:00 PM
        Determination of alpha_S from the Z-boson transverse-momentum distribution (CDF) 30m
        Speakers: Giancarlo Ferrera (Università degli Studi e INFN Milano (IT)), Giancarlo Ferrera (University of Milan)
        ferrera-alphas-24.pdf
      • 1:30 PM
        Determination of the strong coupling constant via the Drell Yan process (ATLAS) 30m
        Speaker: Matthias Schott (CERN / University of Mainz)
        ATLSStrongCouplingConstant.pdf
      • 2:00 PM
        Measurement of αs at CMS: status and prospects 30m
        Speaker: Patrick Connor (University Hamburg (DE))
        ALPHAS_7_Feb_2024_CMS_overview.pdf
      • 2:30 PM
        Discussion: alpha_s from PDFs & LHC data 30m
    • 3:30 PM → 4:00 PM
      Coffee break 30m
    • 4:00 PM → 7:00 PM
      alpha_s from e+e- hadronic final states
      • 4:00 PM
        AlphaS determination from event shapes / the static potential 30m
        Speaker: Prof. VICENT Mateu (University of Salamanca)
        Mateu-ES.pdf
      • 4:30 PM
        Determining alpha_S from Thrust with Power Corrections 30m
        Speaker: MIGUEL ÁNGEL BENITEZ RATHGEB
        Benitez_alphas-2024.pdf
      • 5:00 PM
        Renormalons and power corrections in e+e- annihilation in the three-jet region 30m
        Speaker: Paolo Nason (Universita & INFN, Milano-Bicocca (IT))
        Trento-2-2024.pdf
      • 5:30 PM
        Next-to-leading power correction to event shape variables. 30m
        Speaker: Mr Shubham Mishra (IIT Hyderabad)
        alphas_IITH.pdf
      • 6:00 PM
        Effect of Renormalon Scheme and Perturbative Scale Choices on alpha_s from e+e- event shapes 30m
        Speaker: Christopher Lee (LANL)
        Lee_C_Trento_2024.pdf
      • 6:30 PM
        The QCD Coupling at all Scales from Light Front Holography 30m
        Speakers: Alexandre Deur (Jefferson Lab), Stanley J. brodsky (SLAC National Accelerator Laboratory, Stanford University)
        HLFQCD_alphas24.pdf
  • Thu, February 8
    • 9:00 AM → 10:30 AM
      Morning
    • 10:30 AM → 11:00 AM
      Coffee break 30m
    • 11:00 AM → 12:00 PM
      Morning
      • 11:00 AM
        Discussion on PDG averaging 1h
        Speakers: Joey Huston (Michigan State University (US)), Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE)), Giulia Zanderighi (Max Planck Society (DE))
        PDG-Average_alpha_s-2024_2024028.pdf
    • 12:00 PM → 1:00 PM
      Lunch 1h
    • 1:00 PM → 3:30 PM
      alpha_s from e+e- hadronic final states
      • 1:00 PM
        Strong coupling constant from multiplicity ratio of QCD gluon and quark jets 30m
        Speaker: Dr Redamy Pérez-Ramos (IPSA/LPTHE)
        QCD_talk_Trentino_2024.pdf
      • 1:30 PM
        The complete EM Euclidean Adler function and its interplay with alpha_s and alpha_QED 30m
        Speaker: Antonio Rodriguez Sanchez
        alphasrodriguez.pdf
      • 2:00 PM
        Reliably determination of the QCD coupling from Ruds measurements 30m
        Speaker: Jian-Ming Shen
      • 2:30 PM
        Power corections and alpha_S from e+e- -> hadrons 30m
        Speaker: Stephan Narison
        alphas24-v3.pdf
      • 3:00 PM
        Discussion: alpha_S from e+e- to hadronic final states 30m
    • 3:30 PM → 4:00 PM
      Coffee break 30m
    • 4:00 PM → 7:00 PM
      alpha_s from tau decays
      • 4:00 PM
        alpha_S from tau decay 30m
        Speaker: Santi Peris
        More on Pich's _complaints.pdf
        Peris.pdf
      • 4:30 PM
        Hadronic tau spectral function moments in the RF gluon condensate scheme 30m
        Speaker: Andre Hoang
        Hoang-Tau-RF-GC.pdf
      • 5:00 PM
        Charm mass effects in the Laplace-Borel sum rules for tau decay data 30m
        Speaker: Gorazd Cvetic
        alphas2024_GC.pdf
      • 5:30 PM
        Violations of quark-hadron duality in low-energy determinations of the strong coupling 30m
        Speaker: Antonio Pich
        Trento2024_DV_Pich.pdf
      • 6:00 PM
        Discussion: alpha_s from tau decays 30m
  • Fri, February 9
    • 9:00 AM → 10:30 AM
      Morning
    • 10:30 AM → 11:00 AM
      Coffee break 30m
    • 11:00 AM → 12:00 PM
      Morning
    • 12:00 PM → 1:00 PM
      Lunch 1h