1. Conveneers: M. Grassi (INFN, Pisa), K. Ishida (RIKEN), Y. Semertzidis (BNL) Summary of WG4, Part Two. Yannis Semertzidis, BNL 1 August, 2004 Most muon physics experiments are statistics limited. The prospect of intense muon sources is very exciting!

2. Intense Muon Physics, Part two Lepton Flavor Violation (LFV) Muon EDM and g-2 Precision measurement of muon properties

3. Lepton Flavor Violation μN→τN’

4. Three Generations… leptonsquarks G=1e e ud G=2  cs G=3  tb MECO is searching for the COHERENT conversion of  e in the field of a nucleus (Al). Neutrino Oscillations: Y. Okada: “Large effects are expected in well motivated SUSY models”

5. Supersymmetry Predictions for   e Conversion Process Current Limit SUSY level 10 -12 10 -15 10 -11 10 -13 10 -6 10 -9 100 200 300 100 200 300 MECO single event sensitivity 10 -11 10 -13 10 -15 10 -19 10 -17 10 -21 ReRe Higgs field mixing parameter J. Hisano et al.

6. 1 10 -2 10 -4 10 -16 10 -6 10 -8 10 -10 10 -14 10 -12 1940 1950 1960 1970 1980 1990 2000 2010 MECO Goal  History of Lepton Flavor Violation Searches  - N  e - N  +  e +   +  e + e + e - K 0    + e - K +    +  + e - E871 SINDRUM2 PSI-MEG Goal  MEGA PRIME

7. The MEG experiment Easy signal selection with  + at rest e +  +  Ee = E  = 52.8 MeV Te = T   e  = 180° Single Event Sensitivity  4  10 -14  3  10 -14 Background Upper Limit at 90% CL BR (  e  )  1  10 -13 Discovery 4 events (P = 2  10 -3 ) correspond BR = 2  10 -13 | | | | | | | | | | ‘ 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Data Taking now LoIProposalReviseddocument AssemblyR & D Planning Marco GRASSI (INFN-Pisa)

8. Proton Beam Straw Tracker Crystal Calorimeter Muon Stopping Target Muon Production Target Production Solenoid (5.0 T – 2.5 T) Superconducting Detector Solenoid Superconducting Transport Solenoid (2.5 T – 2.1 T) Collimators Heat & Radiation Shield Funding approved starting in FY05 Complete the final designjune 06 Start magnet channel buildingdec 07 Acceptance testing dec 08 Milestones MECO at BNL Yannis SEMERTZIDIS (BNL) Discovery: 5 events for 10 -16 Proton Beam 40TP/s

9. PRISM/PRIME Yoshitaka KUNO (OSAKA University) PRISM is a dedicated muon source of high intensity, narrow energy width, and high purity 10 11 -10 12  /s. The PRISM-FFAG ring construction has started at Osaka University (5 years). PRIME is to search for mu-e conversion at a sensitivity of 10 -18 with PRISM LoI’s have been submitted to J-PARC and positively evaluated The project is open for new collaborators PRISM PRIME

10. Many theoretical models beyond the Standard Model predict LFV, and some of them LNV. The expected branching ratios span a few orders of magnitude near the present experimental limits The comparison among the processes constitutes a tool to single out the right model MEG (  e  ), MECO and PRIME (  -e conversion ) are under construction or design. They will provide results in a few year, with a great discovery potential. Lepton Flavor Violation

11. Muon g-2 and EDM

13. Difference between 2 and 3 s.d.! Need to run again… New proposal to BNL for a factor >2 improvement in total error

14. LOI to J-PARC for a factor >10 improvement in total error

15. K. Hagiwara (KEK) : A further factor of 2 to 3 improvement in theory error is possible…

16. SUSY Dark Matter Following Ellis, Olive, Santoso, Spanos. Plot by K. Olive

17. SUSY Dark Matter Following Ellis, Olive, Santoso, Spanos. Plot by K. Olive

18. SUSY: EDM, MDM and Transition Moments (LFV) are in Same Matrix

19. Expected Muon EDM Value from a 

20. Baryon-AntiBaryon asymmetry in Universe…

21. CEDMs in SUSY SU(5) GUT with right-handed neutrinos For Here, diagonal right-handed neutrino mass matrix is assumed, and then parameters in neutrino sector are given by oscillation data. (JH, Kakizaki, Nagai, Shimizu) Deuteron EDM reach EDMs in SUSY GUTs J. Hisano (ICRR, Univ. of Tokyo)

22. Precision measurement of muon properties

23. Improvement of TRI limit by 10

24. pulsed muon method to allow ~10000 muon stops in a time window muon life time

25. to more than 10 12 statistics (  G F < 0.5 ppm) muon capture g P (weak probe of strong interaction physics) protiumu gas (0.01 LHD) and TPC muon lifetime

26. Summary of WG4, Part Two. Most muon physics experiments are currently statistics limited. LFV, Muon g-2, EDMs, and Muon Decay Parameter Experiments are very exciting. The discovery potential is great!

27. SUSY Dark Matter Following Ellis, Olive, Santoso, Spanos. Plot by K. Olive