g-2 Workshop

18 Jun 2018, 08:00 → 22 Jun 2018, 18:00 Europe/Berlin

1395/00-111 - Meeting Room Ground Floor I (HIM)

Second Plenary Workshop of the Muon g-2 Theory Initiative

In the coming years, experiments at Fermilab and at J-PARC plan to reduce the uncertainties on the already very precisely measured anomalous magnetic moment of the muon by a factor of four. The goal is to resolve the current tantalizing tension between theory and experiment of three to four standard deviations. On the theory side the hadronic corrections to the anomalous magnetic moment are the dominant sources of uncertainty. They must be determined with better precision in order to unambiguously discover whether or not new physics effects contribute to this quantity.

There are a number of complementary theoretical efforts underway to better understand and quantify the hadronic corrections, including dispersive methods, lattice QCD, effective field theories, and QCD models. The Muon (g-2) Theory Initiative has formed to facilitate interactions between the different groups through organizing a series of workshops. The goal of this workshop is to bring together theorists from the different communities to discuss, assess, and compare the status of the various efforts, and to map out strategies for obtaining the best theoretical predictions for these hadronic corrections in advance of the experimental results.

 

First Circular First Circular

Poster Poster

Second Circular Second Circular

Workshop photo Gm2_Workshop_2018_FullRes-4.jpg

Monday 18 June

08:30 → 09:00 Registration

09:00 → 09:50 Opening

Convener: Hartmut Wittig

09:00 Welcome

Speaker: g-2 Workshop

09:20 Fermilab experiment status

Speaker: David Kawall

Slides mainz_kawall.pdf

09:50 → 11:20 HLbL contributions: Lattice results I

Convener: Laurent Lellouch

09:50 HLbL lattice overview (UConn review)

Speaker: Andreas Nyffeler

Slides HLbL_Lattice_Mainz_Nyffeler.pdf

10:20 HLbL lattice: Mainz results

Speaker: Nils Asmussen

Slides Nils_Asmussen.pdf

10:50 HLbL lattice: RBC results

Speaker: Tom Blum

Slides TBlum.pdf

11:20 → 11:50 Coffee break

11:50 → 12:35 HLbL contributions: Lattice results II

Convener: Steven Gottlieb

11:50 Discussion on HLbL lattice results (Mainz+RBC)

12:35 → 14:00 Lunch break

14:00 → 15:45 HLbL contributions: Lattice results III

Convener: Andreas Nyffeler

14:00 Finite volume effects

Speaker: Harvey Meyer

Slides meyerhFSE-HLbL-Mainz2018.pdf

14:15 Pion TFF lattice: RBC results

Speaker: Luchang Jin

Slides mainz2018.pdf

15:05 Whitepaper discussion HLbL lattice

Speaker: Christoph Lehner

15:45 → 16:15 Coffee break

16:15 → 18:20 HLbL contributions: Pion TFF / pion pole

Convener: Marc Vanderhaeghen

16:15 Pion TFF lattice: Mainz results

Speaker: Antoine Gérardin

Slides talk_gerardin.pdf

16:40 HLbL lattice and truncation error in DR

Speaker: Taku Izubuchi

Slides Izubuchi-Mainz18.pdf

17:00 DSE/BSE-framework for HLbL and PS TFF

Speaker: Christian Fischer

Slides Mainz_Fischer_v2.pdf

17:20 DSE approach to PS poles in HLbL

Speaker: Pablo Roig

Slides PRoigMainz18.pdf

17:35 Padé approach to PS poles in HLbL

Speaker: Pablo Sanchez-Puertas

Slides PabloHLBL.pdf

17:50 Whitepaper discussion pion TFF and pion pole

Speaker: Gilberto Colangelo

18:45 → 19:45 Reception

Tuesday 19 June

09:00 → 10:20 HLbL contributions: Dispersion relations I

Convener: Martin Hoferichter

09:00 DR overview (UConn review)

Speaker: Gilberto Colangelo

Slides lbl-mainz2018.pdf

09:30 DR pion TFF / pion pole

Speaker: Bai Long Hoid

Slides pion_TFF_disp.pdf

09:55 DR $\gamma^*\gamma^* \to \pi\pi$

Speaker: Igor Danilkin

Slides Danilkin_HLbL2018_Mainz.pdf

10:20 → 10:50 Coffee break

10:50 → 12:25 HLbL contributions: Dispersion relations II

Convener: Gilberto Colangelo

10:50 Pseudoscalar-Meson Contributions via the Schwinger sum rule

Speaker: Franziska Hagelstein

Slides SchwingerSumRule_FranziskaHagelstein.pdf

11:10 HLbL DR Partial wave contributions

Speaker: Peter Stoffer

Slides HLbL-Stoffer.pdf

11:35 HLbL DR: short-distance constraints

Speaker: Martin Hoferichter

Slides HLbL_hoferichter.pdf

12:00 Discussion on HLbL DR pion-pole

12:25 → 14:00 Editorial Board meeting: Steering Committee Meeting

12:25 → 14:00 Lunch break

14:00 → 15:05 HLbL contributions: Dispersion relations III

Convener: Johan Bijnens

14:00 Discussion on HLbL DR \pi\pi

14:25 Whitepaper discussion dispersion relations

Speaker: Andreas Nyffeler

15:05 → 15:35 Coffee break

15:35 → 18:15 HLbL contributions: Experiment / MC

Convener: Achim Denig

15:35 BESIII status of \gamma \gamma^* \to \pi^0

Speaker: Christoph Redmer

Slides CFR180619_nodata.pdf

15:55 KLOE 2 status of \gamma \gamma^* \to \pi^0

Speaker: Francesca Curciarello

Slides Curciarello.pdf

16:15 \pi^0\to \gamma\gamma decay width from the PrimEx-II experiment (REMOTE TALK)

Speaker: Ilya Larin

Slides pi0gg_primex2_ilarin_mainz_g2.pptx

16:35 COMPASS status (REMOTE TALK)

Speaker: Dominik Steffen

Slides COMPASS-Primakoff_dsteffen.pdf

16:55 Discussion on experiments and MC generators

Speaker: Henryk Czyż

Slides czyz_g-2.pdf

17:15 Final whitepaper discussion on HLbL

Speakers: Andreas Nyffeler, Christoph Lehner, Gilberto Colangelo

Wednesday 20 June

09:00 → 10:45 HVP contributions: Experiment I

Convener: Lee Roberts

09:00 JPARC experiment update

Speaker: Tsutomu Mibe

Slides g-2theoryinitiative_Mainz_j-parc_20180620_pub.pptx

09:30 HVP overview (KEK review)

Speaker: Aida El-Khadra

Slides El-Khadra_Mainz2018.pdf

09:55 HVP DR experimental input status and outlook (overview)

Speaker: Simon Eidelman

Slides mz18.pdf

10:25 HVP DR experiment Novosibirsk

Speaker: Evgeny Solodov

Slides solodov_cmd3__snd_june2018.pdf

10:45 → 11:15 Coffee break

11:15 → 12:55 HVP contributions: Experiment II

Convener: Thomas Teubner

11:15 HVP DR: tension in experimental inputs

Speaker: Michel Davier

Slides Davier-HVP-data-problems-Mainz-2018.pdf

11:45 Discussion on HVP DR experimental inputs

12:15 MC for HVP DR radiative corrections

Speaker: Szymon Tracz

Slides Mainz_2018.pdf

12:35 Discussion on MC generators and radiative corrections

Speaker: Henryk Czyż

Slides czyz_g-2a.pdf

12:55 → 14:00 Lunch break

14:00 → 16:00 HVP contributions: Dispersion relations

Convener: Michel Davier

14:00 HVP DR status KNT

Speaker: Alex Keshavarzi

Slides AKeshavarzi_TGm2-Mainz_20-06-18.pdf

14:15 HVP DR status DHMZ

Speaker: Bogdan Malaescu

Slides amuWorkshop_Malaescu.pdf

14:30 Update on the HLS model

Speaker: Maurice Benayoun

Slides muon

14:45 HVP 2pi channel and pion form factor

Speaker: Martin Hoferichter

Slides HVP_hoferichter.pdf

15:00 HVP DR propagation of uncertainty

Speakers: Bogdan Malaescu, Thomas Teubner

Slides amuWorkshop_Correlations_Malaescu.pdf

15:30 Discussion on HVP DR

Speakers: Bogdan Malaescu, Thomas Teubner

16:00 → 16:30 Coffee break

16:30 → 18:00 HVP contributions: Lattice I

Convener: Silvano Simula

16:30 HVP lattice status report Mainz

Speaker: Harvey Meyer

Slides meyerhG-2Mainz2018.pdf

17:00 HVP lattice status report FNAL/HPQCD/MILC

Speaker: Ruth Van de Water

Slides VandeWaterMainz2018.pdf

17:30 HVP lattice status report RBC/UKQCD

Speaker: Christoph Lehner

Slides talk-nobackup.pdf

19:00 → 23:00 Conference dinner

Thursday 21 June

09:00 → 10:30 HVP contributions: Lattice II

Convener: Christoph Lehner

09:00 HVP lattice status report BMW

Speaker: Kohtaroh Miura

Slides miura_mainz2018_gm2.pdf

09:30 HVP lattice status report ETMC

Speaker: Silvano Simula

Slides ETMC18_HVP.pdf

10:00 HVP lattice long-distance contributions and sQED vs. GEVP

Speaker: Georg von Hippel

Slides GvHippel-Mainz2018.pdf

10:10 Discussion on HVP lattice long-distance contributions

Speaker: Georg von Hippel

Slides AaronMeyer-mainz.pdf VandeWater

10:30 → 11:00 Coffee break

11:00 → 12:40 HVP contributions: Lattice III

Convener: Harvey Meyer

11:00 HVP lattice isospin breaking effects

Speaker: Vera Gülpers

Slides guelpers_HVPIB.pdf

11:15 Discussion on HVP lattice isospin-breaking effects

Speaker: Vera Gülpers

11:45 Analytical HVP finite volume corrections from two pion states

Speaker: Antonin Portelli

Slides qedfv.pdf

12:00 HVP lattice finite-volume corrections

Speaker: Davide Giusti

Slides HVP_FVEs_Mainz18_Giusti_nb.pdf

12:10 Discussion on HVP lattice finite-volume effects

Speaker: Davide Giusti

12:40 → 14:00 Lunch break

13:15 → 14:00 Editorial Board meeting: Steering Committee meeting

14:00 → 15:45 HVP contributions: Lattice IV

Convener: Georg von Hippel

14:00 Hybrid approach

Speaker: Karl Schilcher

Slides Talk_Mainz_2018.pdf

14:15 Mellin-Barnes approach

Speaker: Eduardo de Rafael

Slides EdeR180621.pdf

14:30 Tau decays comparison

Speaker: Mattia Bruno

Slides mainz-jun-18.pdf

14:45 HVP lattice cross-checks among different groups and with experiment

Speaker: Laurent Lellouch

Slides talk.pdf

15:05 Discussion on HVP lattice cross-checks

Speaker: Laurent Lellouch

Slides Tsang_RBCUKQCD_hybridmethodstudy.pdt

15:45 → 16:15 Coffee break

16:15 → 17:30 HVP contributions: Final discussion

Convener: Aida El-Khadra

16:15 MUonE status: theory and experiment

Speaker: Carlo Carloni Calame

Slides carloni.pdf

16:30 MUonE: how can lattice contribute?

Speaker: Marina Krstic Marinkovic

Slides HVP_lattice&MUonE.pdf

16:45 Whitepaper discussion on HVP

Speakers: Aida El-Khadra, Michel Davier, Simon Eidelman, Thomas Teubner

Friday 22 June

09:00 → 09:30 Editorial Board meeting: Opening plenary

09:30 → 11:30 Editorial Board meeting: DR HVP

09:30 → 11:30 Editorial Board meeting: DR/Pheno HLbL

09:30 → 11:30 Editorial Board meeting: Lattice HLbL

09:30 → 11:30 Editorial Board meeting: Lattice HVP

11:30 → 13:00 Editorial Board meeting: Closing plenary

13:00 → 14:00 Lunch break

14:00 → 17:00 Editorial Board meeting: Spillover session (ONLY IF NEEDED)