Friday, February 24, 2012

W Boson Mass Refined

One of the parting boons provided by Tevatron experiment (now shut down) to the world is an updated and more precise measurement for the mass of the W boson. The Tevatron result, combined with the past measurements leads us to conluded that "the new world average for the W boson mass is . . . 80390 +/- 16 MeV." Before this result, the accuracy was +/- 23 MeV.

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