Oct 20 – 25, 2019
Europe/Zurich timezone

Status of lattice results on contributions of CP violating operators to nEDM

Oct 21, 2019, 3:00 PM
WHGA/001 - Auditorium (PSI)

WHGA/001 - Auditorium


Oral Session


Rajan Gupta (Los Alamos National Laboratory)


Steadily improving bounds on the neutron EDM provide stringent bounds on new interactions and theories at the TeV scale. To leverage this connection requires precise results on matrix elements of the Theta and novel CP violating interactions at the TeV scale. In this talk, I will update our results for the contributions of the quark EDM operator that are already being used in phenomenology, and present new results for the Theta term. In particular I will discuss the issues of the Q$^2$ and chiral behavior of the P and T violating form factor F$_3$ obtained from the matrix element of Theta term in presence of CP violation and the systematics of extracting its contribution to nEDM at Q$^2$ = 0
and at the physical pion mass. Finally I will present a status report on calculation of the chromo EDM and Weinberg operators.

Primary author

Rajan Gupta (Los Alamos National Laboratory)

Presentation materials