0000000000136624

AUTHOR

Andreas Risch

0000-0002-2567-4824

showing 5 related works from this author

The hadronic contribution to the running of the electromagnetic coupling and the electroweak mixing angle

2019

37th International Symposium on Lattice Field Theory, Wuhan, China, 16 Jun 2019 - 22 Jun 2019; PoS(LATTICE 2019)010 (2019).

QuarkParticle physicsneutral currentclover [fermion]High Energy Physics::LatticeHadronstandard modelLattice (group)hep-latWilson [quark]FOS: Physical sciencesLattice QCDelectromagnetic [current]nonperturbativeStandard Modelenergy dependenceHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)quantum chromodynamicshadronic [vacuum polarization]mixingVacuum polarizationcontinuum limitnumerical calculationsParticle Physics - PhenomenologylatticePhysicsElectroweak interactionHigh Energy Physics - Lattice (hep-lat)lattice field theoryflavor: 3 [quark]hep-phParticle Physics - LatticeFermionmass dependence [quark]High Energy Physics - Phenomenologyelectromagnetic [coupling]mixing angle [electroweak interaction]Energy (signal processing)
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Lattice calculation of the hadronic leading order contribution to the muon g − 2

2019

The European physical journal / Web of Conferences Web of Conferences : proceedings proceedings 234, 01016 - (2020). doi:10.1051/epjconf/202023401016

QuarkPhysicsParticle physicsMuonAnomalous magnetic dipole momentComputer Science::Information RetrievalPhysics beyond the Standard ModelHigh Energy Physics::LatticePhysicsQC1-999High Energy Physics - Lattice (hep-lat)HadronHigh Energy Physics::PhenomenologyFOS: Physical sciencesLattice QCDLattice QCD530Standard deviationHigh Energy Physics - LatticeLattice (order)ddc:530High Energy Physics::ExperimentEPJ Web of Conferences
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Towards leading isospin breaking effects in mesonic masses with $O(a)$ improved Wilson fermions

2017

We present an exploratory study of leading isospin breaking effects in mesonic masses using $O(a)$ improved Wilson fermions. Isospin symmetry is explicitly broken by distinct masses and electric charges of the up and down quarks. In order to be able to make use of existing isosymmetric QCD gauge ensembles we apply reweighting techniques. The path integral describing QCD+QED is expanded perturbatively in powers of the light quarks' mass deviations and the electromagnetic coupling. We employ QED$_{\mathrm{L}}$ as a finite volume formulation of QED.

Quantum chromodynamicsQuarkPhysicsParticle physics010308 nuclear & particles physicsPhysicsQC1-999Computer Science::Information RetrievalHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Nuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesFermionGauge (firearms)01 natural sciencesElectric chargeSymmetry (physics)High Energy Physics - LatticeIsospin0103 physical sciencesPath integral formulationHigh Energy Physics::Experiment010306 general physics
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The anomalous magnetic moment of the muon in the Standard Model

2020

We are very grateful to the Fermilab Directorate and the Fermilab Theoretical Physics Department for their financial and logistical support of the first workshop of the Muon g -2 Theory Initiative (held near Fermilab in June 2017) [123], which was crucial for its success, and indeed for the successful start of the Initiative. Financial support for this workshop was also provided by the Fermilab Distinguished Scholars program, the Universities Research Association through a URA Visiting Scholar award, the Riken Brookhaven Research Center, and the Japan Society for the Promotion of Science under Grant No. KAKEHNHI-17H02906. We thank Shoji Hashimoto, Toru Iijima, Takashi Kaneko, and Shohei Nis…

Standard ModelNuclear Theorymagnetichigher-orderPhysics beyond the Standard ModelGeneral Physics and Astronomynucl-ex01 natural sciencesHigh Energy Physics - ExperimentSubatomär fysikHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)Subatomic Physicsquantum electrodynamics[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Vacuum polarizationNuclear Experiment (nucl-ex)Nuclear Experimentfundamental constant: fine structurePhysicsQuantum chromodynamicsQEDAnomalous magnetic dipole momentnew physicsJ-PARC LabHigh Energy Physics - Lattice (hep-lat)Electroweak interactionlattice field theoryParticle Physics - Latticehep-phObservableHigh Energy Physics - PhenomenologyNuclear Physics - TheoryParticle Physics - ExperimentParticle physics[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]nucl-th530 Physicsdispersion relationg-2Lattice field theoryFOS: Physical scienceshep-latnonperturbative[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]530Muon magnetic momentNuclear Theory (nucl-th)High Energy Physics - Latticemuonquantum chromodynamics0103 physical sciencesddc:530Nuclear Physics - Experiment010306 general physicsactivity reportperturbation theoryParticle Physics - PhenomenologyMuonmuon: magnetic momentelectroweak interaction[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat]hep-ex010308 nuclear & particles physicsvacuum polarization: hadronicHigh Energy Physics::Phenomenologyphoton photon: scatteringanomalous magnetic moment[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics::ExperimentPhysics Reports
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Leading isospin breaking effects in the HVP contribution to $a_{\mu}$ and to the running of $\alpha$

2021

The 38th International Symposium on Lattice Field Theory, LATTICE2021, Zoom/Gather@Massachusetts Institute of Technology, USA, 26 Jul 2021 - 30 Jul 2021; Proceedings of Science / International School for Advanced Studies (LATTICE2021), 106 (2021). doi:10.22323/1.396.0106

fermion: WilsonWilson [fermion]muon: magnetic momentHigh Energy Physics::Latticevacuum polarization: hadronicHigh Energy Physics::Phenomenologylattice field theorynonperturbative530isospinHigh Energy Physics - Latticeelectromagnetic [coupling]coupling: electromagneticmagnetic moment [muon]quantum chromodynamicshadronic [vacuum polarization]quantum electrodynamicsddc:530High Energy Physics::Experimentcorrelation function
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