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New results from the CMS experiment put W boson mass mystery to rest

09/17/24

Physicists on the CMS experiment announce the most elaborate mass measurement of a particle that has captivated the physics community for decades.

05/01/05

Soudan mural

This mural in the Soudan Underground Laboratory, located in Minnesota half a mile underground, was designed by artist Joseph Giannetti. Its theme is matter and energy, and--more specifically--neutrino physics.

05/01/05

Bubble chambers are back

Bubble chambers, once at the forefront of particle detection and then relegated to the history books, are coming back.

05/01/05

Neutrino mixing

Waves describe some of the most extraordinary phenomena in the world. Waves can be simple—the sound of a flute playing a sustained, single note—or they can be complicated mixtures—a musical chord, for example, which is a combination of many sound waves.

05/01/05

The decade of the neutrino

Speaking experimentally, the past decade has been the "Decade of the Neutrino." It produced neutrino experiments across three continents, going from the lab, to the nuclear reactor, to the atmosphere, to the sun, and back to the nuclear reactor.

05/01/05

Frolicking bison

As spring arrived, so did the kids. Their knees wobbly and eyes wide open, they stayed close to their moms. Dad, weighing more than 2500 pounds, made sure that no harm came the babies' way.

05/01/05

Breathing accelerator

As the sun rises each day, warming the grounds and buildings of the Stanford Linear Accelerator Center, the entire SPEAR3 synchrotron facility expands in response.

04/01/05

Distant quasar

On the night of April 27, 2002, the Apache Point 3.5 m telescope in New Mexico captured the light signature of SDSS 1148+5251, the most distant quasar known. A quasar is a compact, ultraluminous object thought to be powered by material falling into a giant black hole.

04/01/05

Einstein bear

In honor of the World Year of Physics, symmetry featured an Albert Einstein teddy bear on the cover of the February issue. Since then, we have received a steady stream of phone calls and email.

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