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Researchers added extra energy to the proton to produce a pair of quarks, which then yielded new particles.August 2015Science Highlights

Up and Down Quarks Favored Over Strange Ones

The proton's primary building blocks, up and down quarks, are produced more often than strange quarks in scattering experiments. Read More »

Illustration of Jefferson Lab's CEBAF Large Acceptance Spectrometer (CLAS), along with an event reconstructed from the data.May 2015Science Highlights

Spin and Parity Measurements of the Elusive Lambda(1405) Particle

First description of common particle’s properties provides insights into the nature of the universe. Read More »

The CEBAF Large Acceptance Spectrometer in Jefferson Lab’s Hall B was used to carry out the experiment.May 2015Science Highlights

Protons Hog the Momentum in Neutron-Rich Nuclei

New research could change our view of neutron stars and other systems with neutron-rich nuclei. Read More »

The new beamline connecting the Continuous Electron Beam Accelerator Facility accelerator to its newest experimental area, Hall D, was christened with beam on May 7.June 2014Science Highlights

New Science on the Horizon as Upgraded Particle Accelerator Meets Commissioning Milestones

The recently upgraded CEBAF accelerator delivers its highest-energy electron beams into a new experimental complex for the first time. Read More »

The Q-weak experiment at Jefferson Lab precisely measured the weak force's hold on the proton.May 2014Science Highlights

Q-weak Experiment Determines Proton's Weak Charge

Scientists make the first experimental determination of the weak charge of the proton and extract the weak charges of the neutron and up and down quarks. Read More »

Jefferson Lab's K20 supercomputer.June 2013Science Highlights

Supercomputing on a Budget

The optimization of commercial hardware and specialized software enables cost-effective supercomputing. Read More »

Silicon photomultiplier array.January 2013Science Highlights

Advanced 3D Detectors for Research

Gamma-ray detectors built with silicon photomultiplier arrays provide high-resolution 3D imaging for research. Read More »

NASA Chamber AOctober 2012Science Highlights

Space Chamber Reaches Cold Target at Unprecedented Efficiency

Thomas Jefferson Laboratory lends expertise in cryogenics developments. Read More »

Interior view of the CEBAF Large Acceptance Spectrometer (CLAS) at TJNAF.October 2012Science Highlights

Solved: The Case of the Missing “Excited” Nucleons

Discovery could provide a deeper understanding of the dynamics of the three quarks enslaved inside the nucleon. Read More »