17–24 Jul 2024
Prague
Europe/Prague timezone

An Updated Estimation of CP violating Electric Dipole Moments from known mechanisms in the Standard Model

19 Jul 2024, 11:15
15m
South Hall 1B

South Hall 1B

Parallel session talk 05. Quark and Lepton Flavour Physics Quark and Lepton Flavour Physics

Speaker

Prajwal MohanMurthy

Description

New sources of CP violation, beyond the CKM matrix in the Standard Model (SM), which encodes the weak sector, are required to explain the baryon asymmetry of the universe. An additional mechanism within the SM that can generate CP violating electric dipole moments (EDMs), is through the QCD θs parameter, via the strong sector. Significant advances in the recent past coming from new theoretical calculations of the, (i) electron EDM via hadronic contributions, (ii) CP violating semi-leptonic scalar (and tensor) interaction parameter of CS (and CT), and (iii) nuclear {magnetic quadrupole, Schiff} moment contributions to the molecular systems, has allowed us to update our lower estimates of the EDMs of: charged leptons, certain baryons, select atoms and molecules, within the CKMθs framework, in light of the current experimental upper limits. We were able to impose a new constraint of θs<9.5×1011 (95% C.L.), using an analysis of 199Hg EDM.

Alternate track 03. Beyond the Standard Model
I read the instructions above Yes

Primary author

Co-authors

Ms Apurva Chauhan (Wellesley College) Prof. Jeff Winger (Mississippi State University)

Presentation materials