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Fermilab charged lepton program. CLFV new mixing matrix Multi-decade program to determine 4 free parameters Flavor conserving Muon g-2 Flavor violating Mu2e Next generation Mu2e @ Project X m e g , m e ee , m + e - e + m - also being considered @ Project X CP violating - PowerPoint PPT Presentation
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Fermilab charged lepton program
1/47B. Casey, BNL Colloquium
• CLFV new mixing matrix– Multi-decade program to determine 4 free parameters
• Flavor conserving– Muon g-2
• Flavor violating– Mu2e– Next generation Mu2e @ Project X– meg, me ee , m+e-e+m- also being considered @ Project
X• CP violating
– e EDM with rare isotopes– m EDM storage ring experiments
mmmmmm
ee
eeee
Around the world
2/47B. Casey, BNL Colloquium
mmmmmm
ee
eeeem→eg, mN→eN
→eg, eee
→mg, mmm (g-2)e, (g-2)m, (g-2)
Cold traps,intense muon sources,super B factories,/charm factories, lepton colliders,Hadron colliders…
CP violation: lepton EDM measurements
Physics for the next 4 decades:
Kick starting the program:the new muon g-2 experiment
3/47B. Casey, BNL Colloquium
• Follow up of BNL experiment but better:– Reuse the storage ring– 10x longer decay channel– Segmented calorimeters– Tracking– >20x statistics, >2x less
systematics• Coupled with a world wide
program to interpret the measurement
target
ring
Pbar complex
It is happening!
4/47B. Casey, BNL Colloquium
Detector R&D:
It is happening!
5/47B. Casey, BNL Colloquium
Full g4 ring simulation
Transport line designs
It’s happening!
6/47B. Casey, BNL Colloquium
• Hadronic Light by Light scattering is the last major component of predicted value based on model dependent calculations
• New program at KLOE to measure dominant contributions to this diagram with 2 photon physics at very low Q2
• With this new data, (g-2)m theory error will be almost entirely driven by independent experiments
It’s happening!• Lattice community is
becoming actively engaged in the g-2 effort
• On the way to providing a first principles calculation of muon g-2
7/47B. Casey, BNL Colloquium
Feng, Petschiles, Jansen, Renner arXiv:1103.4818
3% (!)
It’s happening!
8/47B. Casey, BNL Colloquium
Mandy Rominsky FNALKelly Hardin FNALChris Polly FNALBC FNALLeah Welty-Rieger FNAL/Northwestern
It’s happening!
9/47B. Casey, BNL Colloquium
Matthew Gubanich and David Orozco
Matthew Gubanich and David Orozco from Regis
Don Von Lintig BNL
John Benante BNL
It’s happening!
10/47B. Casey, BNL Colloquium
muon g-2 measurements
independent measurements
Lattice
tau spectral function
R scan
radiative return
electron g-2
two photon
BNL
FNAL
JPARC
g-2
muonium
Conclusions
• ‘Fermilab program’ builds in many ways on Brookhaven ideas and accomplishments
• Fermilab is the right place at the right time
• Brookhaven is a strong collaborator on many of these projects and is essential to the success of the program
11/47B. Casey, BNL Colloquium
“It ain’t over till its over.”-Yogi Berra
