Robert Carey

Robert Carey

Office: PRB, Room 375. 617-353-6031

Office Hours: Give me a call


Research Interests:

  • Muon g-2 (Brookhaven National Laboratory) 0.5 ppm measurement of the anomalous magnetic moment of the muon
  • MuLan (Paul Scherrer Institut, Switzerland) 1 ppm measurement of the muon lifetime
  • Mucap(PSI) 5% measurement of the weak pseudoscalar coupling constant
  • MuSun(PSI) Ongoing measurement of muon capture on deuterium


  • BA - Harvard College 1978
  • PhD - Harvard University 1989


My name is Rob Carey and I am a recovering high energy physicist. When I was younger, I worked on collider physics at the Fermilab Tevatron (CDF). For the last 22 years I've been working on high energy experiments at low energy (Muon g-2, MuLan). I'm the adviser to Photon, the local chapter of the Society of Physics Students.

Medium Energy Precision Physics. Looking to fill out a game? Will play most with little provocation soccer, football, basketball, baseball, lacrosse, frisbee, 4-square, Capture the Flag, sardines. Also chess, Stratego, Risk, Crisis as needed ...


In the news:


Research Descriptions:


Paul Scherrer Institut: Precision measurement of muon capture on ultra-pure protium. Best ever determination of gp, the pseudoscalar coupling constant of the weak interactions. Final results expected in summer 2011.


Our muon lifetime experiment (MuLan Collaboration),  at the Paul Scherrer Institut,  which grew out of Brookhaven E821, has published a 1 ppm measurement of the muon lifetime in Physical Review Letters, which improves the precision of the Fermi constant for muon decay. See Phys. Rev. Lett. 106, 041803 (2011), and Phys.Rev. D 87, 052003 (2013)

Muon (g-2) project at Fermilab

This experiment will upgrade of BNL E821. Boston University physicists are playing a leading role. The goal is a factor of four improvement on the precision on the muon anomalous magnetic moment, which will require 21 times the data, approximately 200 million analyzed events, and a factor of three improvement in the systematic errors. The goal is to clarify whether the evidence obtained at Brookhaven is a signal of New Physics entering at the loop level, or a statistical fluctuation.



A high precision measurement of muon capture on deuterium at the Paul Scherrer Institut in Villigen, Switzerland. Test of chiral perturbation theory. Will serve as input to the standard solar model. Production run planned for summer 2011.

Neutrinoless Muon to Electron Conversion

The goal of the Mu2e experiment (pronounced 'mew to ee') is to measure the rate of a muon converting into an electron with no accompanying neutrinos to a precision 10000 times better than previous experiments. Such a violation of charged lepton flavor conservation has never been seen by charged leptons such as muons and electrons. It has already been seen for neutral leptons, neutrinos, in the form of neutrino oscillations. A positive signal is a sure sign of new physics. Mu2e is one of the flagship experiments in the future Fermilab program. It currently has CD0 level (initial) approval at the DOE and is in the process of obtaining CD1 status (funding for a full detailed engineering design).