The calculations of Nucleon Electric Dipole Moment using background field on Lattice QCD

Fangcheng He; Michael Abramczyk; Tom Blum; Taku Izubuchi; Hiroshi Ohki; Sergey Syritsyn

The calculations of Nucleon Electric Dipole Moment using background field on Lattice QCD

Fangcheng He
, Michael Abramczyk
, Tom Blum
, Taku Izubuchi
, Hiroshi Ohki
, Sergey Syritsyn

Physics and Astronomy

Stony Brook University
University of Connecticut
Brookhaven National Lab
United States Department of Energy
Nara Women's University

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Measurements of nucleon and nuclei Electric Dipole Moments (EDMs) play an important role in probing CP violation and exploring physics beyond the Standard Model. We extract the neutron EDM by measuring the energy shift of the nucleon two-point correlation function in the presence of a background field. The UV divergence of the topological charge density operator is mitigated using gradient flow, and the diffusion effect induced by the gradient flow process is included into the fit ansatz. Our calculations were carried out on two 2+1 DWF fermion, Iwasaki, gauge field ensembles generated by the RBC/UKQCD collaborations with inverse lattice spacing 1.73 GeV and pion masses of about 340 and 420 MeV.

Original language	English
Article number	336
Journal	Proceedings of Science
Volume	453
State	Published - Nov 6 2024
Event	40th International Symposium on Lattice Field Theory, LATTICE 2023 - Batavia, United States Duration: Jul 31 2023 → Aug 4 2023

Cite this

@article{a4f47f58c1ae47478429be500e973374,

title = "The calculations of Nucleon Electric Dipole Moment using background field on Lattice QCD",

abstract = "Measurements of nucleon and nuclei Electric Dipole Moments (EDMs) play an important role in probing CP violation and exploring physics beyond the Standard Model. We extract the neutron EDM by measuring the energy shift of the nucleon two-point correlation function in the presence of a background field. The UV divergence of the topological charge density operator is mitigated using gradient flow, and the diffusion effect induced by the gradient flow process is included into the fit ansatz. Our calculations were carried out on two 2+1 DWF fermion, Iwasaki, gauge field ensembles generated by the RBC/UKQCD collaborations with inverse lattice spacing 1.73 GeV and pion masses of about 340 and 420 MeV.",

author = "Fangcheng He and Michael Abramczyk and Tom Blum and Taku Izubuchi and Hiroshi Ohki and Sergey Syritsyn",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 40th International Symposium on Lattice Field Theory, LATTICE 2023 ; Conference date: 31-07-2023 Through 04-08-2023",

year = "2024",

month = nov,

day = "6",

language = "English",

volume = "453",

journal = "Proceedings of Science",

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TY - JOUR

T1 - The calculations of Nucleon Electric Dipole Moment using background field on Lattice QCD

AU - He, Fangcheng

AU - Abramczyk, Michael

AU - Blum, Tom

AU - Izubuchi, Taku

AU - Ohki, Hiroshi

AU - Syritsyn, Sergey

PY - 2024/11/6

Y1 - 2024/11/6

N2 - Measurements of nucleon and nuclei Electric Dipole Moments (EDMs) play an important role in probing CP violation and exploring physics beyond the Standard Model. We extract the neutron EDM by measuring the energy shift of the nucleon two-point correlation function in the presence of a background field. The UV divergence of the topological charge density operator is mitigated using gradient flow, and the diffusion effect induced by the gradient flow process is included into the fit ansatz. Our calculations were carried out on two 2+1 DWF fermion, Iwasaki, gauge field ensembles generated by the RBC/UKQCD collaborations with inverse lattice spacing 1.73 GeV and pion masses of about 340 and 420 MeV.

AB - Measurements of nucleon and nuclei Electric Dipole Moments (EDMs) play an important role in probing CP violation and exploring physics beyond the Standard Model. We extract the neutron EDM by measuring the energy shift of the nucleon two-point correlation function in the presence of a background field. The UV divergence of the topological charge density operator is mitigated using gradient flow, and the diffusion effect induced by the gradient flow process is included into the fit ansatz. Our calculations were carried out on two 2+1 DWF fermion, Iwasaki, gauge field ensembles generated by the RBC/UKQCD collaborations with inverse lattice spacing 1.73 GeV and pion masses of about 340 and 420 MeV.

UR - https://www.scopus.com/pages/publications/85210033490

M3 - Conference article

AN - SCOPUS:85210033490

SN - 1824-8039

VL - 453

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 336

T2 - 40th International Symposium on Lattice Field Theory, LATTICE 2023

Y2 - 31 July 2023 through 4 August 2023

ER -

The calculations of Nucleon Electric Dipole Moment using background field on Lattice QCD

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