alphas-2019: Workshop on precision measurements of the QCD coupling constant

Name: alphas-2019: Workshop on precision measurements of the QCD coupling constant
Start: 2019-02-11T08:00:00+01:00
End: 2019-02-15T19:00:00+01:00
Location: ECT* Trento

11 Feb 2019, 08:00 → 15 Feb 2019, 19:00 Europe/Zurich

ECT* Trento

Strada delle Tabarelle, 286 38123 Villazzano TRENTO (TN)

David d'Enterria (CERN), Stefan Kluth (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)

Description

The "alphas-2019: Workshop on precision measurements of the strong coupling constant" conference, to be held at ECT* (Trento), 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 density 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).

Support

alphas2019-organizers@cern.ch

Registration

alphas-2019 registration

Participants

32 View full list

Monday 11 February
- 1
  
  Arrival of the participants
- 10:30
  
  Coffee break
- 2
  
  Arrival of the participants
- 12:30
  
  Lunch
- 14:00
  
  ECT* welcome
- Overview and Introduction
  - 3
    
    Presentation / Goals of the workshop
    
    Speakers: David d'Enterria (CERN), Stefan Kluth (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
    
    alphas19_ect_intro.pdf
  - 4
    
    World Summary of alpha_s before 2019
    
    Speaker: Siegfried Bethke (Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
    
    Trento-alphas-pre2019.pdf
  - 5
    
    (alpha_s pre-2019 discussion)
- 15:15
  
  Coffee break
- alpha_s: Lattice QCD
  - 6
    
    alpha_s from the lattice: FLAG 2019 average
    
    Speaker: Rainer Paul Sommer (DESY)
    
    2019-alphas-Trento-rs.pdf
  - 7
    
    Strong coupling constant from the moments of quarkonium correlators
    
    Speaker: Peter Petreczky (BNL)
    
    trento19.pdf
  - 8
    
    alpha_s from lattice ALPHA collaboration
    
    Speaker: Stefan Sint (Trinity College Dublin (IE))
    
    trento19.pdf
Tuesday 12 February
- alpha_S from electroweak observables
  - 9
    
    The QCD coupling at all scales and the elimination of renormalization scale uncertainties (Remote)
    
    Speaker: Stanley J. Brodsky (SLAC National Accelerator Laboratory, Stanford University)
    
    SJB alpha_s ECT_ 2019.pdf
  - 10
    
    The five-loop beta function of QCD
    
    Speaker: Johann Kuehn (KIT, Karlsruhe, Germany)
    
    HZBeta.pdf
- 10:30
  
  Coffee break
- alpha_s: Lattice QCD
  - 11
    
    alpha_s from the QCD static energy
    
    Speaker: Nora brambilla
    
    alpha019brambilla.pdf
  - 12
    
    alpha_S from ALPHA
    
    Speaker: Mattia Dalla Brida (DESY - Zeuthen)
    
    alpha_MDB.pdf
  - 13
    
    alpha_s determination from static QCD potential with renormalon subtraction
    
    Speaker: Hiromasa Takaura (Kyushu University)
    
    alphas2019_Takaura.pdf
- 12:30
  
  Lunch break
- alpha_s from DIS & PDFs
  - 14
    
    alpha_S, ABM PDFs, and heavy-quark masses
    
    Speaker: Dr Sergey Alekhin (Hamburg University)
    
    slides.pdf
  - 15
    
    alpha_S from H1 jets
    
    Speaker: Daniel Britzger (Max-Planck-Institut für Physik München)
    
    190212-britzger-alpha_s.pdf
- 15:00
  
  Coffee break
- alpha_s from DIS & PDFs
  - 16
    
    alpha_s from pdfs
    
    Speaker: Joey Huston (Michigan State University (US))
    
    huston_alphas_trento.pdf
  - 17
    
    (Discussion on alpha_s extractions from PDFs)
Wednesday 13 February
- alpha_S from e+e- hadronic and tau pair final states
  - 18
    
    Old and new observables for alpha_S from e+e- to hadrons
    
    Speaker: Gabor Somogyi (University of Debrecen (HU))
    
    old_new_obs_alphas.pdf
  - 19
    
    alpha_S from 2-jet rate in e+e-
    
    Speaker: Andrii Verbytskyi (Max-Planck-Institut fur Physik (DE))
    
    Trento2019_Andrii_Verbytskyi.pdf
- 10:30
  
  Coffee break
- alpha_S from e+e- hadronic and tau pair final states
  - 20
    
    The strong coupling from e+e- to hadrons
    
    Speaker: Maarten Golterman (San Francisco State University)
    
    Trento2019-alpha_s.pdf
  - 21
    
    The strong coupling constant from soft parton-to-hadron fragmentation functions
    
    Speaker: Redamy PEREZ Ramos (IPSA, Ivry-sur-Seine)
    
    QCD_talk_Trentino_2019.pdf
- 12:30
  
  Lunch
- alpha_s at hadron colliders
  - 22
    
    alpha_s from jets in pp collisions
    
    Speaker: Dr Joao Ramalho Pires (CFTP, Instituto Superior Tecnico, Universidade de Lisboa)
    
    piresTrento.pdf
  - 23
    
    alpha_S Jet substructure and a possible determination of the QCD coupling
    
    Speaker: Felix Ringer (Lawrence Berkeley National Laboratory)
    
    Trento19_FRinger.pdf
- 15:00
  
  Coffee break
- alpha_s at hadron colliders
  - 24
    
    Extractions of the strong coupling constant in ATLAS
    
    Speaker: Fernando Barreiro Alonso (Universidad Autonoma de Madrid (ES))
    
    pres_alphas_2019.pdf
  - 25
    
    alpha_S determinations from CMS
    
    Speaker: Klaus Rabbertz (KIT - Karlsruhe Institute of Technology (DE))
    
    alphas-from-CMS_alphas-2019_2019_KRabbertz.pdf
Thursday 14 February
- alpha_s at hadron colliders
  - 26
    
    alpha_s from inclusive W and Z cross sections at the LHC
    
    Speakers: Andres Poldaru (National Institute of Chemical Physics and Biophysics (EE)), David d'Enterria (CERN)
    
    Poldaru_alpha_s_WZ_Trento.pdf
  - 27
    
    Determination of alphas(mZ) from the Z-boson transverse momentum distribution
    
    Speaker: Stefano Camarda (CERN)
    
    zptalphas.pdf
- 10:30
  
  Coffee break
- alpha_s from tau decays
  - 28
    
    alpha_s from hadronic tau decay
    
    Speaker: santiago peris (Univ. Autonoma de Barcelona)
    
    Alpha-S(Trento).pdf
  - 29
    
    QCD coupling: scheme variations and tau decays
    
    Speakers: Ramon Miravitllas (UAB, IFAE), Ramon Miravitllas Mas
    
    Ramon_Miravitllas_Trento.pdf
  - 30
    
    (Discussion on alpha_s extractions from tau decays)
- 12:30
  
  Lunch
- 31
  
  alpha_s from hadronic W decays
  
  Speaker: David d'Enterria (CERN)
  
  dde_alphas_Wdecay_ect2019.pdf
- 32
  
  Agora - discussion and preparation of proceedings contributions
- 15:30
  
  Coffee break
- 33
  
  Agora - discussion and preparation of proceedings contributions
Friday 15 February
- 34
  
  Discussion on PDG averaging
  
  Speakers: Giulia Zanderighi, Joey Huston (Michigan State University (US))
- 10:30
  
  Coffee break
- 35
  
  Discussion on alpha_s averaging. Workshop summary
- 12:30
  
  Lunch
- 36
  
  Departure of the participants