SchwingerFest2018: g-2

December 3rd through 5th, 2018

UCLA Faculty Center

Organizers: Zvi Bern (Mani L. Bhaumik Institute), Tom Blum (University of Connecticut), Lance Dixon (SLAC), William Marciano (Brookhaven National Laboratory)

2018 is Julian Schwinger's Centennial. To help celebrate Julian Schwinger's legacy, the Mani L. Bhaumik Institute and the Julian Schwinger Foundation will be holding a workshop on the latest developments on the anomalous magnetic moment of leptons, especially the muon. A long-standing 3 sigma discrepancy between theory and experiment points towards new physics beyond the Standard Model. Is it real? This workshop is particularly timely given the ongoing Fermilab muon g-2 experiment, which will reach unprecedented precision. In order to fully interpret the upcoming experimental results, it is essential to improve the theoretical uncertainty in difficult to compute hadronic contributions, especially to the light-by-light contribution. Recent progress in lattice gauge theory calculations suggests that it is possible to achieve this. The primary purpose of this workshop is to bring together leading experts to assess the situation and to identify paths towards new breakthroughs.

View photos from SchwingerFest2018 here.

Agenda

Monday, December 3rd

8:45-9:00 Zvi Bern + Seth Putterman: Welcome

Longer talks

1. 9:00-9:45 Kim Milton: "First to the top: Julian Schwinger's calculation of the anomalous magnetic moment of the electron"

2. 9:45-10:30 Lee Roberts: "The History of the Muon g-2 Experiments, and Why Schwinger Mattered"

10:30-11:00 Coffee

3. 11:00-11:45 Bill Marciano: "Lepton g-2 Theory Overview"

4. 11:45-12:30 Gerald Gabrielse: "Stringent Tabletop Tests of the Standard Model: A Tale of the Electron's Electric and Magnetic Dipole Moments"

12:30-2:00 Lunch

Shorter talks

5. 2:00-2:30 Dominik Stoeckinger: "BSM contributions to g-2 from extra Higgs bosons and several SUSY scenarios"

6. 2:30-3:00 Hooman Davoudiasl: "Dark Sectors and Lepton g-2"

7. 3:00-3:30 Andrzej Czarnecki: "g-factor of free and bound leptons"

3:30-4:00 Coffee

8. 4:00-4:30 Oliver Schnetz: "The Galois structure of g-2"

9. 4:30-5:00 Mattia Bruno: "Isospin Breaking in tau input for (g - 2) from Lattice QCD"

10. 5:00-5:30 Alex Keshavarzi: "The muon g-2: HVP update from KNT"

11. 5:30-6:00 Peter Stoffer: "Two-pion contributions to the muon g-2"

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Tuesday, December 4th

Longer talks

12. 8:45-9:30 Makiko Nio: "Higher-order QED contributions to the lepton g-2"

13. 9:30-10:15 David Kawali: "The Muon g-2 Experiment at Fermilab²"

10:15-10:45 Coffee

14. 10:45-11:30 Aida El-Khadra: "The muon g-2 theory initiative and the Fermilab/MILC/HPQCD lattice g-2 project: an update"

15. 11:30-12:15 Christoph Lehner: "An overview of lattice QCD+QED progress for g-2"

12:15-2:00 Lunch

Shorter talks

16. 2:00-2:30 Antoine Gérardin: "Hadronic light-by-light contribution to the muon g-2 from lattice QCD : Mainz results"

17. 2:30-3:00 Luchang Jin: "Lattice QCD calculation of the hadronic light-by-light contribution to muon g-2 from RBC-UKQCD"

18. 3:00-3:30 Hartmut Wittig: "The hadronic vacuum polarization contribution from Lattice QCD - an update from the Mainz group"

3:30-4:00 Coffee

19. 4:00-4:30 Vera Guelpers : "Lattice calculation of the isospin breaking corrections to the HVP from RBC-UKQCD"

20. 4:30-5:00 Kotaroh Miura: "Ab initio study of LO-HVP contributions to Muon g-2 with QED Corrections"

21. 5:00-5:30 Christine Davies: "The hadronic vacuum polarisation contribution from Lattice QCD - an update from Fermilab/HPQCD/MILC"

22. 5:30-6:00 Davide Giusti: "Lattice QCD+QED calculation of the HVP contribution to the muon g-2 from ETMC"

7 PM Banquet on Tuesday at Faculty Center

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Wednesday, December 5th

Longer talks

23. 8:45-9:30 Tsutomu Mibe: "Measuring muon's g-2 with a new method at J-PARC"

24. 9:30-10:15 Holger Muller: "Measurement of the fine structure constant as a test of the standard model"

10:15-10:45 Coffee

25. 10:45-11:30 Marina Marinkovic: "Leading hadronic contribution to the muon g-2: an interplay of lattice and experiment"

Shorter talks

26. 11:30-12:00 Aaron Meyer: "Lattice QCD Calculation of the Muon HVP from RBC-UKQCD"

12:00-1:30 Lunch

1:30-5:00 Free time for organized and/or disorganized discussion

3:30-4:00 Coffee at Bhaumik Institute

Tour of Bhaumik Institute blackboards + spontaneous or organized discussions especially on means to improve lattice calculations. People who haven’t spoken will be especially welcome to speak up.

Attendees include:

Nils Asmussen

Zvi Bern

Tom Blum

Mattia Bruno

Andrzej Czarnecki

Christine Davies

Hooman Davoudiasl

Lance Dixon

Aida El-Khadra

Gerald Gebrielse

Antoine Gerardin

Davide Giusti

Maarten Golterman

Vera Guelpers

Martin Hoferichter

Luchang Jin

David Kawall

Alex Keshavarzi

Christoph Lehner

Aneesh Manohar

William Marciano

Marina Marinkovic

Aaron Meyer

Tsutomu Mibe

Kim Milton

Kohtaroh Miura

Holger Muller

Makiko Nio

Lee Roberts

Oliver Schnetz

Peter Stoffer

Dominick Stockinger

Hartmut Wittig

* = tentative