Particles with two heavy quarks are predicted by the Standard Model theory of particle physics, but this is the first time scientists have been able to confirm they exist.
In August 2005 nearly seven hundred physicists and engineers from around the world traveled to the small Rocky Mountain town of Snowmass, Colorado, to advance the planning and design of the proposed International Linear Collider.
Like climbers assessing a new route before making the ascent, physicists have been looking for footholds on a vertiginous new terrain. These footholds contain important information for trekking to TeV heights (the lofty trillion electron volts energy scales of future colliders).
After darkness sets in each night, a wall of TV monitors in the control room of Apache Point Observatory continually displays the telescope's view of the heavens.
Burton Richter’s group double-checked what they thought was a minor statistical inconsistency in their data. Using the Stanford Positron Electron Accelerating Ring (SPEAR), they probed electron-positron collision energies around 3.1 GeV.
More than 500 tons of niobium would go into building the ILC. What's so great about niobium? Where does it come from? And is the Earth's supply going to run out?