1. Electric Dipole Moment Searches in Nuclei, Atoms, and Molecules Dave Kawall - RIKEN BNL Research Center and UMass D S RBRC Symposium, BNL, June 19th, 2006

2. P T D S 2

3. 3

4. 4

5. e e  x P and CP-violating processes 5

6. 6

7. 7

8. 8

9. Two Loop Contributions to EDMS in SUSY ( From D. Chang, W.Y. Keung, and A. Pilaftsis, Phys. Rev. Lett. 82, 900 (1999)) R f = tan , F=two-loop function,  =CP violating parameter 9

10. Multi-Higgs Naive SUSY Accidental Canc. Approx-CP Approx-Universality Alignment Heavy sfermions SO(10) GUT Left-Right Symmetric Lepton Flavor Changing Technicolor 10 -26 10 -28 10 -30 Berkeley Yale I (projected) 10 -32 Exact-Universality 10 -40 Standard Model Yale II (projected) Searching for new physics with the electron EDM d e is a powerful probe for new physics even a null result is interesting Experimental limit: |d e | < 1.6  10 -27 e  cm (Berkeley) d e (e·cm) 10

11. Algorithm for finding an EDM Put system with unpaired spin in parallel E and B fields Spin polarize system perpendicular to fields (superposition of spin up and down) Torques from E and B lead to precession through angle f in coherence time t Flip E wrt B, look for change in f ( i.e. look for energy shift) w w w f f f B B E D E=2 m B+2dE D E=2 m B D E=2 m B-2dE Torques Parallel Torques Antiparallel Spin Up Spin Down Look for precession frequency shift Dn~4 dE/h For E=100 kV/cm, d e =1 x 10 -27 e cm  Dn~ 20 nHz D B ~ few x 10 -14 G Only works for neutral systems 11

12. 12

13. 13

14. LANL/SNS Neutron EDM Apparatus 14

15. 15

16. 16

17. 17

19. E int Pb + O–O– E ext 19

20. Concept is simple enough … Picture of chamber, leads for oven, RF, electrodes, PMT, B-field coils, … View down lightpipe EDM Cell with electrodes, guard rings 20

21. 21

22. Electrode Filter Photodiode Ablation Pulse Excitation Pulse 4 He Cold Plate<4KHe Inlet PbO 22

23. 23

24. BLBL ILIL 24

25. Summary  No permanent EDM has been found in any system  There are good reasons to expect EDMs within range of new generation of experiments  Non-zero and null results both quite interesting  New experiments in different systems well underway  Stay tuned - next 2-5 years will be very interesting 25

26. Thanks for your attention!