Calculation of neutron electric dipole moment due to the QCD topological term, Weinberg three-gluon operator and the quark chromoelectric moment

Tanmoy Bhattacharya; Vincenzo Cirigliano; Rajan Gupta; Emanuele Mereghetti; Boram Yoon

doi:10.48550/arxiv.2203.03746

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Calculation of neutron electric dipole moment due to the QCD topological term, Weinberg three-gluon operator and the quark chromoelectric moment

Tanmoy Bhattacharya, Vincenzo Cirigliano, Rajan Gupta, Emanuele Mereghetti and Boram Yoon

arXiv (Cornell University)

03/07/2022

DOI: https://doi.org/10.48550/arxiv.2203.03746

Abstract and subjects

Physics - High Energy Physics - Lattice

We present results for the neutron electric dipole moment due to the dimension 4 and dimension 6 gluonic CP violation, and the isovector quark chromoelectric dipole moment using clover valence quarks on HISQ dynamical ensembles generated by the MILC Collaboration. For the gluonic operators, we use the gradient flow scheme to obtain divergence-free continuum results. For the chromoelectric dipole moment operator, we use the unflowed local operator but discuss how the quadratically divergent mixing with the pseudoscalar operator can be controlled nonperturbatively.

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Title: Calculation of neutron electric dipole moment due to the QCD topological term, Weinberg three-gluon operator and the quark chromoelectric moment
Authors/Creators - name: Tanmoy Bhattacharya
Vincenzo Cirigliano
Rajan Gupta
Emanuele Mereghetti
Boram Yoon
Publication Details: arXiv (Cornell University)
Language: English
Resource Type: Preprint
DOI: https://doi.org/10.48550/arxiv.2203.03746
Publication ISSN: 2331-8422