Fermilab charged lepton program
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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

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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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

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

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!

Detector R&D:

B. Casey, BNL Colloquium


It is happening!

Full g4 ring simulation

Transport line designs

B. Casey, BNL Colloquium


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 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 happening!

Mandy Rominsky FNAL

Kelly Hardin FNAL

Chris Polly FNAL

BC FNAL

Leah Welty-Rieger FNAL/Northwestern

B. Casey, BNL Colloquium


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 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

“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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