Neutron electric dipole moment from isovector quark chromo-electric dipole moment
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914763795070976 |
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| author | Bhattacharya, Tanmoy Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Yoo, Jun-Sik Yoon, Boram |
| author_facet | Bhattacharya, Tanmoy Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Yoo, Jun-Sik Yoon, Boram |
| contents | We present results from our lattice QCD study of the contribution of the isovector quark cEDM (qcEDM) operator to the neutron EDM. The calculation was carried out on four 2+1+1-flavor highly improved staggered quark ensembles (provided to us by the MILC collaboration) using Wilson-clover quarks to construct correlation functions. We use the nonsinglet axial Ward identity including corrections up to O(a) to show how to control the power-divergent mixing of the isovector qcEDM operator with the lower dimensional pseudoscalar operator. Results for the nEDM are presented after conversion to the MS scheme at the leading-log order. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13516 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Neutron electric dipole moment from isovector quark chromo-electric dipole moment Bhattacharya, Tanmoy Cirigliano, Vincenzo Gupta, Rajan Mereghetti, Emanuele Yoo, Jun-Sik Yoon, Boram High Energy Physics - Lattice We present results from our lattice QCD study of the contribution of the isovector quark cEDM (qcEDM) operator to the neutron EDM. The calculation was carried out on four 2+1+1-flavor highly improved staggered quark ensembles (provided to us by the MILC collaboration) using Wilson-clover quarks to construct correlation functions. We use the nonsinglet axial Ward identity including corrections up to O(a) to show how to control the power-divergent mixing of the isovector qcEDM operator with the lower dimensional pseudoscalar operator. Results for the nEDM are presented after conversion to the MS scheme at the leading-log order. |
| title | Neutron electric dipole moment from isovector quark chromo-electric dipole moment |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2404.13516 |