Cargando…

Exclusive Channel Study of the Muon HVP

The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation...

Descripción completa

Detalles Bibliográficos
Autores principales: Bruno, Mattia, Izubuchi, Taku, Lehner, Christoph, Meyer, Aaron S.
Lenguaje:eng
Publicado: SISSA 2019
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.363.0239
http://cds.cern.ch/record/2697245
_version_ 1780964208424255488
author Bruno, Mattia
Izubuchi, Taku
Lehner, Christoph
Meyer, Aaron S.
author_facet Bruno, Mattia
Izubuchi, Taku
Lehner, Christoph
Meyer, Aaron S.
author_sort Bruno, Mattia
collection CERN
description The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation function. Explicit studies of the exclusive channels of the HVP diagram make it possible to reconstruct the long-distance behavior of the correlation function. This removes most of the statistical uncertainty of the correlation function. In these proceedings, preliminary results of an exclusive study of the isospin symmetric connected-only vector-vector correlation function using a hybrid of distillation and A2A techniques are presented. The computation is performed on 2+1 flavor M\"obius Domain Wall Fermion ensembles with physical pion mass. Reconstruction of the long-distance correlation function will enable lattice-only calculations of the HVP to achieve precision similar to estimates of the HVP from the R-ratio method on the timescale of the new experimental measurements of the muon anomalous magnetic moment.
id cern-2697245
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
publisher SISSA
record_format invenio
spelling cern-26972452020-09-02T10:05:18Zdoi:10.22323/1.363.0239http://cds.cern.ch/record/2697245engBruno, MattiaIzubuchi, TakuLehner, ChristophMeyer, Aaron S.Exclusive Channel Study of the Muon HVPhep-latParticle Physics - LatticeThe Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation function. Explicit studies of the exclusive channels of the HVP diagram make it possible to reconstruct the long-distance behavior of the correlation function. This removes most of the statistical uncertainty of the correlation function. In these proceedings, preliminary results of an exclusive study of the isospin symmetric connected-only vector-vector correlation function using a hybrid of distillation and A2A techniques are presented. The computation is performed on 2+1 flavor M\"obius Domain Wall Fermion ensembles with physical pion mass. Reconstruction of the long-distance correlation function will enable lattice-only calculations of the HVP to achieve precision similar to estimates of the HVP from the R-ratio method on the timescale of the new experimental measurements of the muon anomalous magnetic moment.The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation function. Explicit studies of the exclusive channels of the HVP diagram make it possible to reconstruct the long-distance behavior of the correlation function. This removes most of the statistical uncertainty of the correlation function. In these proceedings, preliminary results of an exclusive study of the isospin symmetric connected-only vector-vector correlation function using a hybrid of distillation and A2A techniques are presented. The computation is performed on 2+1 flavor Möbius Domain Wall Fermion ensembles with physical pion mass. Reconstruction of the long-distance correlation function will enable lattice-only calculations of the HVP to achieve precision similar to estimates of the HVP from the R-ratio method on the timescale of the new experimental measurements of the muon anomalous magnetic moment.SISSAarXiv:1910.11745CERN-TH-2019-179oai:cds.cern.ch:26972452019-10-25
spellingShingle hep-lat
Particle Physics - Lattice
Bruno, Mattia
Izubuchi, Taku
Lehner, Christoph
Meyer, Aaron S.
Exclusive Channel Study of the Muon HVP
title Exclusive Channel Study of the Muon HVP
title_full Exclusive Channel Study of the Muon HVP
title_fullStr Exclusive Channel Study of the Muon HVP
title_full_unstemmed Exclusive Channel Study of the Muon HVP
title_short Exclusive Channel Study of the Muon HVP
title_sort exclusive channel study of the muon hvp
topic hep-lat
Particle Physics - Lattice
url https://dx.doi.org/10.22323/1.363.0239
http://cds.cern.ch/record/2697245
work_keys_str_mv AT brunomattia exclusivechannelstudyofthemuonhvp
AT izubuchitaku exclusivechannelstudyofthemuonhvp
AT lehnerchristoph exclusivechannelstudyofthemuonhvp
AT meyeraarons exclusivechannelstudyofthemuonhvp