Speaker
Dr
Tanmoy Bhattacharya
(Los Alamos National Laboratory)
Description
We present results from our lattice QCD study of the contribution of the isovector quark chromo-electric dipole moment (qcEDM) operator to the nucleon electric dipole moments (nEDM). The calculation was carried out on four 2+1+1-flavor of highly improved staggered quark (HISQ) ensembles using Wilson-clover quarks to construct correlation functions. We use the non-singlet 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 MSbar scheme at the leading-log order.
| Topical area | Particle Physics Beyond the Standard Model |
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Primary author
Dr
Tanmoy Bhattacharya
(Los Alamos National Laboratory)
Co-authors
Dr
Boram Yoon
(NVIDIA Corporation)
Emanuele Mereghetti
(Los Alamos National Laboratory)
Dr
Jun-sik Yoo
(Stony Brook University)
Rajan Gupta
(Los Alamos National Lab)
Vincenzo Cirigliano
(Institute for Nuclear Theory, University of Washington)