20-25 October 2019
PSI
Europe/Zurich timezone

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

21 Oct 2019, 15:00
20m
WHGA/001 - Auditorium (PSI)

WHGA/001 - Auditorium

PSI

Oral Session

Speaker

Rajan Gupta (Los Alamos National Laboratory)

Description

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