World's best measurement of W boson mass tests Standard Model, Higgs boson limits

Fermilab's Tevatron particle collider may have shut down last year, but it left behind massive amounts of data for scientists to sift through—physicists I've talked to suggest that papers should keep flowing at the same pace as when it was running for well over a year. Thursday, the CDF detector team released a new estimate of the mass of the W boson, derived from Tevatron data, that provides the most precise value for this particle yet. Thanks to relationships among the particles of the Standard Model, this also places a limit on the mass of the Higgs boson, a limit that's consistent with the data coming out of the LHC. The W boson helps mediate the weak nuclear force, which drives radioactive decays. It was first detected back in the 1980s at CERN's SPS accelerator, which now forms part of the accelerator chain that feeds the LHC. Since then, various accelerators have produced enough Ws to provide an estimate of its mass, with all of them placing it at just above 80GeV, at an error range of about 100

World's best measurement of W boson mass tests Standard Model, Higgs boson limits

(PhysOrg.com) -- Just as firemen use different methods to narrow the location of a person trapped in a building, scientists employ two techniques to find the hiding place of the theorized Higgs ...

Thu 23 Feb 12 from Phys.org

Physicists Pinpoint W Boson, Narrow Search for Higgs

Scientists have produced the most precise measurement of a fundamental particle called the W boson. It will help them search for the elusive Higgs boson, the discovery of which would be an epoch-making ...

Thu 23 Feb 12 from Wired Science

Physicists raid Tevatron for parts

Fermilab icon plundered amid tight budgets and shifting scientific aims.

Wed 22 Feb 12 from Nature News

High-precision weigh-in for W boson means fewer hiding places for Higgs

Fermilab's Tevatron particle collider may have shut down last year, but it left behind massive amounts of data for scientists to sift through—physicists I've talked to suggest that papers ...

Fri 24 Feb 12 from Ars Technica

Physicists Pinpoint Elementary Particle, Leading Way to Higgs

Scientists working at Fermilab have improved measurements of the W boson, a particle that helps us understand supersymmetry, and which helps close in on the mass of the Higgs particle.

Thu 23 Feb 12 from Livescience

Increased energy in the LHC, and why we can't make use of it all | Jon Butterworth | Life & Physics

When looking for new particles, the Large Hadron Collider is really a Large Quark-and-Gluon Collider. And a black Fiat Bravo is not KITT.As is not very unusual, I am writing this on a plane ...

Sat 18 Feb 12 from Guardian.co.uk

'Interesting' Higgs Boson Result to be Announced

It may not be the long-awaited news about a Higgs boson discovery, but an "interesting" announcement will soon come from scientists analyzing data from the Tevatron particle accelerator.

Fri 17 Feb 12 from Discovery.com

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