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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

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Fermilab charged lepton program
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eg, meee , m+e-e+m- also being considered @ Project X

  • CP violating

    • e EDM with rare isotopes

    • m EDM storage ring experiments

B. Casey, BNL Colloquium


Around the world
Around the world

Physics for the next 4 decades:

Cold traps,

intense muon sources,

super B factories,

t/charm factories,

lepton colliders,

Hadron colliders…

m→eg, mN→eN

t→eg, eee

t→mg, mmm

(g-2)e, (g-2)m, (g-2)t

CP violation: lepton EDM measurements

B. Casey, BNL Colloquium


Kick starting the program the new muon g 2 experiment
Kick starting the program:the new muon g-2 experiment

Pbar complex

target

ring

B. 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


It is happening
It is happening!

Detector R&D:

B. Casey, BNL Colloquium


It is happening1
It is happening!

Full g4 ring simulation

Transport line designs

B. Casey, BNL Colloquium


It s happening
It’s happening!

  • 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

B. Casey, BNL Colloquium


It s happening1
It’s happening!

Feng, Petschiles, Jansen, Renner arXiv:1103.4818

3% (!)

Lattice community is becoming actively engaged in the g-2 effort

On the way to providing a first principles calculation of muon g-2

B. Casey, BNL Colloquium


It s happening2
It’s happening!

Mandy Rominsky FNAL

Kelly Hardin FNAL

Chris Polly FNAL

BC FNAL

Leah Welty-Rieger FNAL/Northwestern

B. Casey, BNL Colloquium


It s happening3
It’s happening!

Matthew Gubanich and David Orozco

Don Von Lintig BNL

Matthew Gubanich and David Orozco from Regis

John Benante BNL

B. Casey, BNL Colloquium


It s happening4
It’s happening!

Lattice

independent measurements

muon g-2 measurements

two photon

g-2

BNL

R scan

tau spectral function

FNAL

electron g-2

muonium

JPARC

radiative return

B. Casey, BNL Colloquium


Conclusions
Conclusions

“It ain’t over till its over.”

-Yogi Berra

‘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

B. Casey, BNL Colloquium


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