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

Name: alphas-2024: Workshop on precision measurements of the QCD coupling constant
Start: 2024-02-05T08:00:00+01:00
End: 2024-02-09T21:55:00+01:00
Location: ECT* Trento

5 Feb 2024, 08:00 → 9 Feb 2024, 21:55 Europe/Zurich

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 $α_{S} (m_{Z})$ 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:

We run a CERN mattermost channel to keep minutes of the meeting.

Support

alphas-conf-organizers@cern.ch

Registration

alphas-2024 registration

Participants

71 View full list

Monday 5 February ¶
- Mon 5 Feb
- Tue 6 Feb
- Wed 7 Feb
- Thu 8 Feb
- Fri 9 Feb
- 10:30
  
  Coffee break
- 12:00
  
  Lunch
- Introduction and organisation¶
  
  Aim of the workshop, organise Snowmass contribution
  
  alphas24_ect_intro.pdf
  - 1
    
    Presentation of the workshop¶
    
    Speakers: David d'Enterria (CERN), Giulia Zanderighi (Max Planck Society (DE)), Stefan Kluth (Max Planck Society (DE))
    
    alphas24_ect_intro.pdf
- alpha_s: Lattice QCD¶
  
  alphas24.jpg
  - 2
    
    Accurate determination of the strong coupling¶
    
    Speaker: Alberto Ramos Martinez (Univ. of Valencia and CSIC (ES))
    
    trento_24.pdf
  - 3
    
    RG improvement and alpha_s determination from relativistic sum rules¶
    
    Speaker: Mohd Siddique Akbar Alam Khan (Indian Institute of Science Bangalore)
    
    Alam_Alpha_2024.pdf
  - 4
    
    Extraction of alpha_S using energy of a static quark-antiquark pair within hyperasymptotic approximation¶
    
    Speaker: Cesar Ayala
    
    Alphas24Ayala.pdf
  - 5
    
    TUMQCD: alpha from 2+1+1 static potential¶
    
    Speaker: Viljami Leino
    
    Leino_211_alpha_tumqcd_trento24.pdf
  - 6
    
    Factorial Growth in pQCD and Implications for αs¶
    
    Speaker: Andreas Kronfeld
    
    ask4alpha_s.pdf
- 15:45
  
  ECT* welcome (Dir. Gert Aarts)
- 15:50
  
  Coffee break
- alpha_s: Lattice QCD¶
  
  alphas24.jpg
  - 7
    
    Lambda_0 from the statice force on the lattice with gradient flow¶
    
    Speaker: Julian Mayer-Steudte
    
    JulianMayer-Steudte_AlphaS_Trento_2024.pdf
  - 8
    
    Determination of alpha_s in 2+1 flavor lattice QCD from gradient flow¶
    
    Speaker: Hai-Tao Shu
    
    alphas2024.pdf
  - 9
    
    Lattice determination of the strong coupling constant from moments of quarkonium correlators¶
    
    Speaker: Peter Petreczky
    
    alphas_ect24.pdf
  - 10
    
    On the heavy quark correlator moments method¶
    
    Speaker: Rainer Paul Sommer (DESY)
    
    trento24-RS-trimmed.pdf
  - 11
    
    FLAG working group on alpha_S¶
    
    Speaker: Stefan Sint (Trinity College Dublin)
    
    alphas_24_sint.pdf
Tuesday 6 February ¶
- Mon 5 Feb
- Tue 6 Feb
- Wed 7 Feb
- Thu 8 Feb
- Fri 9 Feb
- Morning¶
- 10:30
  
  Coffee break
- Morning¶
- 12:00
  
  Lunch break
- alpha_s: Lattice QCD¶
  
  alphas24.jpg
  - 12
    
    Discussion: alpha_s from lattice QCD¶
- alpha_s from DIS & PDFs¶
  - 13
    
    Perspectives on measurements of alpha_s from spin structure functions¶
    
    Speaker: Alexandre Deur (Jefferson Lab)
    
    BjSR_alpha_EIC.pdf
  - 14
    
    Extraction of the strong coupling with HERA and EIC inclusive data¶
    
    arxiv:2307.01183
    
    Speaker: ANDREA BARONTINI (Università degli studi di Milano)
    
    Alpha_s_Barontini.pdf
  - 15
    
    Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS¶
    
    DESY-23-129, arxiv:2309.02889
    
    Speaker: Florian Lorkowski (University of Zürich)
    
    InclusiveJets.pdf
  - 16
    
    MSHT20aN3LO alphas¶
    
    Speaker: Thomas Cridge (DESY)
    
    MSHT20_alphas2024.pdf
- 15:30
  
  Coffee break
- alpha_s from DIS & PDFs¶
  - 17
    
    alphas and NNPDF fits¶
    
    Speaker: Luigi Del Debbio (The University of Edinburgh (GB))
    
    Trento24.pdf
- alpha_s at hadron colliders¶
  - 18
    
    Determination of alpha_S from azimuthal correlations among jets (CMS)¶
    
    Speaker: Paris Gianneios (Université Libre de Bruxelles (BE))
    
    alphaS2024_Trento_Paris_Gianneios.pdf
  - 19
    
    Determination of the strong coupling from TEECs in multijet events at sqrt(s) = 13 TeV with the ATLAS detector¶
    
    Speaker: Fernando Barreiro Alonso (Universidad Autonoma de Madrid (ES))
    
    alphas_2024.pdf
  - 20
    
    Measurement of alpha_S from energy correlators in jets (CMS)¶
    
    Speaker: Meng Xiao (ZJU - Zhejiang University (CN))
    
    ENCAlphaS.pdf
  - 21
    
    Possible strategy to extract αS using secondary Lund planes¶
    
    Speaker: Cristian Baldenegro Barrera (Sapienza Universita e INFN, Roma I (IT))
    
    AlphaS meeting.pdf
- alpha_s from DIS & PDFs¶
  - 22
    
    3-loop hevy flavor Wilson coefficients to the unpolarized and polarized deep-inelastic scattering¶
    
    Speaker: Prof. Johannes Bluemlein
    
    TRENTO24.pdf
Wednesday 7 February ¶
- Mon 5 Feb
- Tue 6 Feb
- Wed 7 Feb
- Thu 8 Feb
- Fri 9 Feb
- Morning¶
- 10:30
  
  Coffee break
- Morning¶
- 12:00
  
  Lunch
- alpha_s at hadron colliders¶
  - 23
    
    Determination of alpha_S from the Z-boson transverse-momentum distribution (CDF)¶
    
    Speakers: Giancarlo Ferrera (Università degli Studi e INFN Milano (IT)), Giancarlo Ferrera (University of Milan)
    
    ferrera-alphas-24.pdf
  - 24
    
    Determination of the strong coupling constant via the Drell Yan process (ATLAS)¶
    
    Speaker: Matthias Schott (CERN / University of Mainz)
    
    ATLSStrongCouplingConstant.pdf
  - 25
    
    Measurement of αs at CMS: status and prospects¶
    
    Speaker: Patrick Connor (University Hamburg (DE))
    
    ALPHAS_7_Feb_2024_CMS_overview.pdf
  - 26
    
    Discussion: alpha_s from PDFs & LHC data¶
- 15:30
  
  Coffee break
- alpha_s from e+e- hadronic final states¶
  - 27
    
    AlphaS determination from event shapes / the static potential¶
    
    Speaker: Prof. VICENT Mateu (University of Salamanca)
    
    Mateu-ES.pdf
  - 28
    
    Determining alpha_S from Thrust with Power Corrections¶
    
    Speaker: MIGUEL ÁNGEL BENITEZ RATHGEB
    
    Benitez_alphas-2024.pdf
  - 29
    
    Renormalons and power corrections in e+e- annihilation in the three-jet region¶
    
    Speaker: Paolo Nason (Universita & INFN, Milano-Bicocca (IT))
    
    Trento-2-2024.pdf
  - 30
    
    Next-to-leading power correction to event shape variables.¶
    
    Speaker: Mr Shubham Mishra (IIT Hyderabad)
    
    alphas_IITH.pdf
  - 31
    
    Effect of Renormalon Scheme and Perturbative Scale Choices on alpha_s from e+e- event shapes¶
    
    Speaker: Christopher Lee (LANL)
    
    Lee_C_Trento_2024.pdf
  - 32
    
    The QCD Coupling at all Scales from Light Front Holography¶
    
    Speakers: Alexandre Deur (Jefferson Lab), Stanley J. brodsky (SLAC National Accelerator Laboratory, Stanford University)
    
    HLFQCD_alphas24.pdf
Thursday 8 February ¶
- Mon 5 Feb
- Tue 6 Feb
- Wed 7 Feb
- Thu 8 Feb
- Fri 9 Feb
- Morning¶
- 10:30
  
  Coffee break
- Morning¶
  - 33
    
    Discussion on PDG averaging¶
    
    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
  
  Lunch
- alpha_s from e+e- hadronic final states¶
  - 34
    
    Strong coupling constant from multiplicity ratio of QCD gluon and quark jets¶
    
    Speaker: Dr Redamy Pérez-Ramos (IPSA/LPTHE)
    
    QCD_talk_Trentino_2024.pdf
  - 35
    
    The complete EM Euclidean Adler function and its interplay with alpha_s and alpha_QED¶
    
    Speaker: Antonio Rodriguez Sanchez
    
    alphasrodriguez.pdf
  - 36
    
    Reliably determination of the QCD coupling from Ruds measurements¶
    
    Speaker: Jian-Ming Shen
  - 37
    
    Power corections and alpha_S from e+e- -> hadrons¶
    
    Speaker: Stephan Narison
    
    alphas24-v3.pdf
  - 38
    
    Discussion: alpha_S from e+e- to hadronic final states¶
- 15:30
  
  Coffee break
- alpha_s from tau decays¶
  - 39
    
    alpha_S from tau decay¶
    
    Speaker: Santi Peris
    
    More on Pich's _complaints.pdf
    
    Peris.pdf
  - 40
    
    Hadronic tau spectral function moments in the RF gluon condensate scheme¶
    
    Speaker: Andre Hoang
    
    Hoang-Tau-RF-GC.pdf
  - 41
    
    Charm mass effects in the Laplace-Borel sum rules for tau decay data¶
    
    Speaker: Gorazd Cvetic
    
    alphas2024_GC.pdf
  - 42
    
    Violations of quark-hadron duality in low-energy determinations of the strong coupling¶
    
    Speaker: Antonio Pich
    
    Trento2024_DV_Pich.pdf
  - 43
    
    Discussion: alpha_s from tau decays¶
Friday 9 February ¶
- Mon 5 Feb
- Tue 6 Feb
- Wed 7 Feb
- Thu 8 Feb
- Fri 9 Feb
- Morning¶
- 10:30
  
  Coffee break
- Morning¶
- 12:00
  
  Lunch