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Benvenuti in queste pagine dedicate a scienza ed arte. Amelia Carolina Sparavigna

Friday, April 8, 2011

Tevatron claims glimpse of particles beyond standard model

Tevatron claims possible glimpse of particles beyond the standard model - April 06, 2011
"Just as the Tevatron, the proton-antiproton collider at Fermilab in Batavia, Illinois, enters its final months of operations, possible signals of new physics are emerging. First came a report from the Collider Detector at Fermilab (CDF) experiment of a puzzling asymmetry in the way top quarks decay into lighter particles. Now the same experiment is reporting on the possible observation of particles beyond the standard model in collisions that produce a W boson – a particle of the weak nuclear force. Spokesmen for the experiment say the signal may be due to random fluctuations, but that it’s nonetheless causing some excitement. “Either what we thought we knew about this process is wrong or there’s a totally new effect,” says Giovanni Punzi, CDF co-spokesman."