The hadronic vacuum polarization function with O(a)-improved Wilson fermions -An update

Michele Della Morte; Gregorio Herdoiza; Hanno Horch; Benjamin Jäger; Harvey Meyer; Hartmut Wittig

The hadronic vacuum polarization function with O(a)-improved Wilson fermions -An update

Michele Della Morte, Gregorio Herdoiza, Hanno Horch, Benjamin Jäger, Harvey Meyer, Hartmut Wittig

Institut for Matematik og Datalogi

Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › peer review

Abstract

We present an update of our lattice QCD study of the vacuum polarization function using O(a)- improved N_f = 2 Wilson fermions with increased statistics and a large set of momenta. The resulting points are highly correlated and thus require a correlated fitting procedure. We employ an extended frequentist method to estimate the systematic uncertainties due to the momentum dependence and to the continuum and chiral extrapolations. We present preliminary results of the leading order hadronic contribution of the anomalous magnetic moment of the muon (a^HLO _μ) at the physical point for u;d; s and c valence quarks.

Originalsprog	Engelsk
Artikelnummer	111
Tidsskrift	Proceedings of Science
Vol/bind	14-18-July-2015
ISSN	1824-8039
Status	Udgivet - 2015
Begivenhed	33rd International Symposium on Lattice Field Theory, LATTICE 2015 - Kobe, Japan Varighed: 14. jul. 2015 → 18. jul. 2015

Konference

Konference	33rd International Symposium on Lattice Field Theory, LATTICE 2015
Land/Område	Japan
By	Kobe
Periode	14/07/2015 → 18/07/2015

Bibliografisk note

Funding Information:
ACKNOWLEDGEMENTS: Our calculations were performed on the “Wilson” and “Clover” HPC Clusters at the Institute for Nuclear Physics, University of Mainz. We thank Dalibor Djukanovic and Christian Seiwerth for technical support. This research has been supported in part by the DFG via the SFB 1044. G.H. acknowledges support by the the Spanish MINECO through the Ramón y Cajal Programme and through the project FPA2012-31686 and by the Centro de excelencia Severo Ochoa Program SEV-2012-0249. This work was granted access to the HPC resources of the Gauss Center for Supercomputing at Forschungzentrum Jülich, Germany, made available within the Distributed European Computing Initiative by the PRACE-2IP, receiving funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement RI-283493 (project PRA039) and ERC grant agreement No 279757.

Citationsformater

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abstract = "We present an update of our lattice QCD study of the vacuum polarization function using O(a)- improved Nf = 2 Wilson fermions with increased statistics and a large set of momenta. The resulting points are highly correlated and thus require a correlated fitting procedure. We employ an extended frequentist method to estimate the systematic uncertainties due to the momentum dependence and to the continuum and chiral extrapolations. We present preliminary results of the leading order hadronic contribution of the anomalous magnetic moment of the muon (aHLO μ) at the physical point for u;d; s and c valence quarks.",

author = "{Della Morte}, Michele and Gregorio Herdoiza and Hanno Horch and Benjamin J{\"a}ger and Harvey Meyer and Hartmut Wittig",

note = "Funding Information: ACKNOWLEDGEMENTS: Our calculations were performed on the “Wilson” and “Clover” HPC Clusters at the Institute for Nuclear Physics, University of Mainz. We thank Dalibor Djukanovic and Christian Seiwerth for technical support. This research has been supported in part by the DFG via the SFB 1044. G.H. acknowledges support by the the Spanish MINECO through the Ram{\'o}n y Cajal Programme and through the project FPA2012-31686 and by the Centro de excelencia Severo Ochoa Program SEV-2012-0249. This work was granted access to the HPC resources of the Gauss Center for Supercomputing at Forschungzentrum J{\"u}lich, Germany, made available within the Distributed European Computing Initiative by the PRACE-2IP, receiving funding from the European Community{\textquoteright}s Seventh Framework Programme (FP7/2007-2013) under grant agreement RI-283493 (project PRA039) and ERC grant agreement No 279757.; 33rd International Symposium on Lattice Field Theory, LATTICE 2015 ; Conference date: 14-07-2015 Through 18-07-2015",

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T1 - The hadronic vacuum polarization function with O(a)-improved Wilson fermions -An update

AU - Della Morte, Michele

AU - Herdoiza, Gregorio

AU - Horch, Hanno

AU - Jäger, Benjamin

AU - Meyer, Harvey

AU - Wittig, Hartmut

N1 - Funding Information: ACKNOWLEDGEMENTS: Our calculations were performed on the “Wilson” and “Clover” HPC Clusters at the Institute for Nuclear Physics, University of Mainz. We thank Dalibor Djukanovic and Christian Seiwerth for technical support. This research has been supported in part by the DFG via the SFB 1044. G.H. acknowledges support by the the Spanish MINECO through the Ramón y Cajal Programme and through the project FPA2012-31686 and by the Centro de excelencia Severo Ochoa Program SEV-2012-0249. This work was granted access to the HPC resources of the Gauss Center for Supercomputing at Forschungzentrum Jülich, Germany, made available within the Distributed European Computing Initiative by the PRACE-2IP, receiving funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement RI-283493 (project PRA039) and ERC grant agreement No 279757.

PY - 2015

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N2 - We present an update of our lattice QCD study of the vacuum polarization function using O(a)- improved Nf = 2 Wilson fermions with increased statistics and a large set of momenta. The resulting points are highly correlated and thus require a correlated fitting procedure. We employ an extended frequentist method to estimate the systematic uncertainties due to the momentum dependence and to the continuum and chiral extrapolations. We present preliminary results of the leading order hadronic contribution of the anomalous magnetic moment of the muon (aHLO μ) at the physical point for u;d; s and c valence quarks.

AB - We present an update of our lattice QCD study of the vacuum polarization function using O(a)- improved Nf = 2 Wilson fermions with increased statistics and a large set of momenta. The resulting points are highly correlated and thus require a correlated fitting procedure. We employ an extended frequentist method to estimate the systematic uncertainties due to the momentum dependence and to the continuum and chiral extrapolations. We present preliminary results of the leading order hadronic contribution of the anomalous magnetic moment of the muon (aHLO μ) at the physical point for u;d; s and c valence quarks.

M3 - Conference article

AN - SCOPUS:84988569012

SN - 1824-8039

VL - 14-18-July-2015

JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

M1 - 111

T2 - 33rd International Symposium on Lattice Field Theory, LATTICE 2015

Y2 - 14 July 2015 through 18 July 2015

ER -

The hadronic vacuum polarization function with O(a)-improved Wilson fermions -An update

Abstract

Konference

Bibliografisk note

Fingeraftryk

Citationsformater