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explain it in 60 seconds: Neutrino masses

Neutrino masses are extremely difficult to measure. While we know precisely how much an electron weighs, we have little information on the mass of its neutral partner, the electron neutrino. The same is true of the muon neutrino and tau neutrino.

For a long time scientists thought neutrinos might be massless. Then experiments revealed that the three types of neutrinos can transform into each other, a process known as neutrino oscillation.


	Science in the Neighborhood ILC Citizens' Task Force report NOvA Environmental Assessment Public Events Budget news Update on low levels of tritium at Fermilab Science Chicago Science Chicago: Life’s a Lab


	The U.S. has contributed $531 million to the construction of the Large Hadron Collider, the world's largest particle collider, located in Europe. From the LHC Remote Operations Center at Fermilab, U.S. scientists will participate in the startup of the machine. More than 900 scientists from the U.S. work on the CMS experiment at the LHC. Sifting through proton-proton collisions, scientists may find signs for dark matter particles, new subatomic forces and perhaps extra dimensions of space.

Security, Privacy, Legal

Nov. 21, 2008:

From the Directorate: Snow day policy

Special Result of the Week: SciBooNE’s search for coherence in neutrino interactions

In Brief: Organize carpool with free PACE Rideshare program

From AIP FYI, Nov. 20: High energy physics advisory panel briefing on budget outlook

Latest issue:

Life at the LHC reaches fever pitch

Mapping the digital divide

JLab ’s New Director

gallery: david kirkby

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Scientists inaugurate world's largest cosmic-ray observatory

Pierre Auger Observatory scientists celebrate their 3000-square-kilometer detector array at the observatory in Malargüe, Argentina

Fermilab physicists discover "doubly strange" particle

Physicists of Fermilab's DZero experiment have discovered a new particle made of three quarks, the Omega-sub-b.

P5 report

The Particle Physics Project Prioritzation Panel proposes a strategic plan for the next 10 years to address the central questions in particle physics using a range of tools and techniques at three interrelated frontiers.

Result of the Week

Each week a new Result of the Week showcases the scientific research and results achieved at Fermilab.

Physics at Fermilab

Learn how Fermilab is paving the way for the next particle physics discovery.